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android-kvm / linux / 4eb98b7760e8078dbc984ee08b02b5b4c3cff088 / . / arch / x86 / events / intel / core.c
blob: d879478db3f572077d69fe2cc290d3c3f236fe16 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Per core/cpu state
*
* Used to coordinate shared registers between HT threads or
* among events on a single PMU.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/nmi.h>
#include <linux/kvm_host.h>
#include <asm/cpufeature.h>
#include <asm/debugreg.h>
#include <asm/hardirq.h>
#include <asm/intel-family.h>
#include <asm/intel_pt.h>
#include <asm/apic.h>
#include <asm/cpu_device_id.h>
#include "../perf_event.h"
/*
* Intel PerfMon, used on Core and later.
*/
static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
{
[PERF_COUNT_HW_CPU_CYCLES] = 0x003c,
[PERF_COUNT_HW_INSTRUCTIONS] = 0x00c0,
[PERF_COUNT_HW_CACHE_REFERENCES] = 0x4f2e,
[PERF_COUNT_HW_CACHE_MISSES] = 0x412e,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x00c4,
[PERF_COUNT_HW_BRANCH_MISSES] = 0x00c5,
[PERF_COUNT_HW_BUS_CYCLES] = 0x013c,
[PERF_COUNT_HW_REF_CPU_CYCLES] = 0x0300, /* pseudo-encoding */
};
static struct event_constraint intel_core_event_constraints[] __read_mostly =
{
INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_core2_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_nehalem_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_nehalem_extra_regs[] __read_mostly =
{
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
EVENT_EXTRA_END
};
static struct event_constraint intel_westmere_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_snb_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
/*
* When HT is off these events can only run on the bottom 4 counters
* When HT is on, they are impacted by the HT bug and require EXCL access
*/
INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_ivb_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */
INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMPTY */
INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */
INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */
INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
/*
* When HT is off these events can only run on the bottom 4 counters
* When HT is on, they are impacted by the HT bug and require EXCL access
*/
INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
{
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0xffff, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
EVENT_EXTRA_END
};
static struct event_constraint intel_v1_event_constraints[] __read_mostly =
{
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_gen_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_v5_gen_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x0400, 3), /* SLOTS */
FIXED_EVENT_CONSTRAINT(0x0500, 4),
FIXED_EVENT_CONSTRAINT(0x0600, 5),
FIXED_EVENT_CONSTRAINT(0x0700, 6),
FIXED_EVENT_CONSTRAINT(0x0800, 7),
FIXED_EVENT_CONSTRAINT(0x0900, 8),
FIXED_EVENT_CONSTRAINT(0x0a00, 9),
FIXED_EVENT_CONSTRAINT(0x0b00, 10),
FIXED_EVENT_CONSTRAINT(0x0c00, 11),
FIXED_EVENT_CONSTRAINT(0x0d00, 12),
FIXED_EVENT_CONSTRAINT(0x0e00, 13),
FIXED_EVENT_CONSTRAINT(0x0f00, 14),
FIXED_EVENT_CONSTRAINT(0x1000, 15),
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_slm_event_constraints[] __read_mostly =
{
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_grt_event_constraints[] __read_mostly = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x013c, 2), /* CPU_CLK_UNHALTED.REF_TSC_P */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_skt_event_constraints[] __read_mostly = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x013c, 2), /* CPU_CLK_UNHALTED.REF_TSC_P */
FIXED_EVENT_CONSTRAINT(0x0073, 4), /* TOPDOWN_BAD_SPECULATION.ALL */
FIXED_EVENT_CONSTRAINT(0x019c, 5), /* TOPDOWN_FE_BOUND.ALL */
FIXED_EVENT_CONSTRAINT(0x02c2, 6), /* TOPDOWN_RETIRING.ALL */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_skl_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x1c0, 0x2), /* INST_RETIRED.PREC_DIST */
/*
* when HT is off, these can only run on the bottom 4 counters
*/
INTEL_EVENT_CONSTRAINT(0xd0, 0xf), /* MEM_INST_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_L3_HIT_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xcd, 0xf), /* MEM_TRANS_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xc6, 0xf), /* FRONTEND_RETIRED.* */
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_knl_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x799ffbb6e7ull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x399ffbffe7ull, RSP_1),
EVENT_EXTRA_END
};
static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
EVENT_EXTRA_END
};
static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
EVENT_EXTRA_END
};
static struct extra_reg intel_skl_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
/*
* Note the low 8 bits eventsel code is not a continuous field, containing
* some #GPing bits. These are masked out.
*/
INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE),
EVENT_EXTRA_END
};
static struct event_constraint intel_icl_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x01c0, 0), /* old INST_RETIRED.PREC_DIST */
FIXED_EVENT_CONSTRAINT(0x0100, 0), /* INST_RETIRED.PREC_DIST */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x0400, 3), /* SLOTS */
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_RETIRING, 0),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BAD_SPEC, 1),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FE_BOUND, 2),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BE_BOUND, 3),
INTEL_EVENT_CONSTRAINT_RANGE(0x03, 0x0a, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0x1f, 0x28, 0xf),
INTEL_EVENT_CONSTRAINT(0x32, 0xf), /* SW_PREFETCH_ACCESS.* */
INTEL_EVENT_CONSTRAINT_RANGE(0x48, 0x56, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0x60, 0x8b, 0xf),
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xff), /* CYCLE_ACTIVITY.STALLS_TOTAL */
INTEL_UEVENT_CONSTRAINT(0x10a3, 0xff), /* CYCLE_ACTIVITY.CYCLES_MEM_ANY */
INTEL_UEVENT_CONSTRAINT(0x14a3, 0xff), /* CYCLE_ACTIVITY.STALLS_MEM_ANY */
INTEL_EVENT_CONSTRAINT(0xa3, 0xf), /* CYCLE_ACTIVITY.* */
INTEL_EVENT_CONSTRAINT_RANGE(0xa8, 0xb0, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0xb7, 0xbd, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0xd0, 0xe6, 0xf),
INTEL_EVENT_CONSTRAINT(0xef, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0xf0, 0xf4, 0xf),
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_icl_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffffbfffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffffbfffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE),
EVENT_EXTRA_END
};
static struct extra_reg intel_glc_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff1f, FE),
INTEL_UEVENT_EXTRA_REG(0x40ad, MSR_PEBS_FRONTEND, 0x7, FE),
INTEL_UEVENT_EXTRA_REG(0x04c2, MSR_PEBS_FRONTEND, 0x8, FE),
EVENT_EXTRA_END
};
static struct event_constraint intel_glc_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x0100, 0), /* INST_RETIRED.PREC_DIST */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x013c, 2), /* CPU_CLK_UNHALTED.REF_TSC_P */
FIXED_EVENT_CONSTRAINT(0x0400, 3), /* SLOTS */
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_RETIRING, 0),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BAD_SPEC, 1),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FE_BOUND, 2),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BE_BOUND, 3),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_HEAVY_OPS, 4),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BR_MISPREDICT, 5),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FETCH_LAT, 6),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_MEM_BOUND, 7),
INTEL_EVENT_CONSTRAINT(0x2e, 0xff),
INTEL_EVENT_CONSTRAINT(0x3c, 0xff),
/*
* Generally event codes < 0x90 are restricted to counters 0-3.
* The 0x2E and 0x3C are exception, which has no restriction.
*/
INTEL_EVENT_CONSTRAINT_RANGE(0x01, 0x8f, 0xf),
INTEL_UEVENT_CONSTRAINT(0x01a3, 0xf),
INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf),
INTEL_UEVENT_CONSTRAINT(0x08a3, 0xf),
INTEL_UEVENT_CONSTRAINT(0x04a4, 0x1),
INTEL_UEVENT_CONSTRAINT(0x08a4, 0x1),
INTEL_UEVENT_CONSTRAINT(0x02cd, 0x1),
INTEL_EVENT_CONSTRAINT(0xce, 0x1),
INTEL_EVENT_CONSTRAINT_RANGE(0xd0, 0xdf, 0xf),
/*
* Generally event codes >= 0x90 are likely to have no restrictions.
* The exception are defined as above.
*/
INTEL_EVENT_CONSTRAINT_RANGE(0x90, 0xfe, 0xff),
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_rwc_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
INTEL_UEVENT_EXTRA_REG(0x02c6, MSR_PEBS_FRONTEND, 0x9, FE),
INTEL_UEVENT_EXTRA_REG(0x03c6, MSR_PEBS_FRONTEND, 0x7fff1f, FE),
INTEL_UEVENT_EXTRA_REG(0x40ad, MSR_PEBS_FRONTEND, 0x7, FE),
INTEL_UEVENT_EXTRA_REG(0x04c2, MSR_PEBS_FRONTEND, 0x8, FE),
EVENT_EXTRA_END
};
static struct event_constraint intel_lnc_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x0100, 0), /* INST_RETIRED.PREC_DIST */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
FIXED_EVENT_CONSTRAINT(0x013c, 2), /* CPU_CLK_UNHALTED.REF_TSC_P */
FIXED_EVENT_CONSTRAINT(0x0400, 3), /* SLOTS */
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_RETIRING, 0),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BAD_SPEC, 1),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FE_BOUND, 2),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BE_BOUND, 3),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_HEAVY_OPS, 4),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BR_MISPREDICT, 5),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FETCH_LAT, 6),
METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_MEM_BOUND, 7),
INTEL_UEVENT_CONSTRAINT(0x0148, 0x4),
INTEL_UEVENT_CONSTRAINT(0x0175, 0x4),
INTEL_EVENT_CONSTRAINT(0x2e, 0x3ff),
INTEL_EVENT_CONSTRAINT(0x3c, 0x3ff),
/*
* Generally event codes < 0x90 are restricted to counters 0-3.
* The 0x2E and 0x3C are exception, which has no restriction.
*/
INTEL_EVENT_CONSTRAINT_RANGE(0x01, 0x8f, 0xf),
INTEL_UEVENT_CONSTRAINT(0x01a3, 0xf),
INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf),
INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
INTEL_UEVENT_CONSTRAINT(0x04a4, 0x1),
INTEL_UEVENT_CONSTRAINT(0x08a4, 0x1),
INTEL_UEVENT_CONSTRAINT(0x10a4, 0x1),
INTEL_UEVENT_CONSTRAINT(0x01b1, 0x8),
INTEL_UEVENT_CONSTRAINT(0x02cd, 0x3),
INTEL_EVENT_CONSTRAINT(0xce, 0x1),
INTEL_EVENT_CONSTRAINT_RANGE(0xd0, 0xdf, 0xf),
/*
* Generally event codes >= 0x90 are likely to have no restrictions.
* The exception are defined as above.
*/
INTEL_EVENT_CONSTRAINT_RANGE(0x90, 0xfe, 0x3ff),
EVENT_CONSTRAINT_END
};
EVENT_ATTR_STR(mem-loads, mem_ld_nhm, "event=0x0b,umask=0x10,ldlat=3");
EVENT_ATTR_STR(mem-loads, mem_ld_snb, "event=0xcd,umask=0x1,ldlat=3");
EVENT_ATTR_STR(mem-stores, mem_st_snb, "event=0xcd,umask=0x2");
static struct attribute *nhm_mem_events_attrs[] = {
EVENT_PTR(mem_ld_nhm),
NULL,
};
/*
* topdown events for Intel Core CPUs.
*
* The events are all in slots, which is a free slot in a 4 wide
* pipeline. Some events are already reported in slots, for cycle
* events we multiply by the pipeline width (4).
*
* With Hyper Threading on, topdown metrics are either summed or averaged
* between the threads of a core: (count_t0 + count_t1).
*
* For the average case the metric is always scaled to pipeline width,
* so we use factor 2 ((count_t0 + count_t1) / 2 * 4)
*/
EVENT_ATTR_STR_HT(topdown-total-slots, td_total_slots,
"event=0x3c,umask=0x0", /* cpu_clk_unhalted.thread */
"event=0x3c,umask=0x0,any=1"); /* cpu_clk_unhalted.thread_any */
EVENT_ATTR_STR_HT(topdown-total-slots.scale, td_total_slots_scale, "4", "2");
EVENT_ATTR_STR(topdown-slots-issued, td_slots_issued,
"event=0xe,umask=0x1"); /* uops_issued.any */
EVENT_ATTR_STR(topdown-slots-retired, td_slots_retired,
"event=0xc2,umask=0x2"); /* uops_retired.retire_slots */
EVENT_ATTR_STR(topdown-fetch-bubbles, td_fetch_bubbles,
"event=0x9c,umask=0x1"); /* idq_uops_not_delivered_core */
EVENT_ATTR_STR_HT(topdown-recovery-bubbles, td_recovery_bubbles,
"event=0xd,umask=0x3,cmask=1", /* int_misc.recovery_cycles */
"event=0xd,umask=0x3,cmask=1,any=1"); /* int_misc.recovery_cycles_any */
EVENT_ATTR_STR_HT(topdown-recovery-bubbles.scale, td_recovery_bubbles_scale,
"4", "2");
EVENT_ATTR_STR(slots, slots, "event=0x00,umask=0x4");
EVENT_ATTR_STR(topdown-retiring, td_retiring, "event=0x00,umask=0x80");
EVENT_ATTR_STR(topdown-bad-spec, td_bad_spec, "event=0x00,umask=0x81");
EVENT_ATTR_STR(topdown-fe-bound, td_fe_bound, "event=0x00,umask=0x82");
EVENT_ATTR_STR(topdown-be-bound, td_be_bound, "event=0x00,umask=0x83");
EVENT_ATTR_STR(topdown-heavy-ops, td_heavy_ops, "event=0x00,umask=0x84");
EVENT_ATTR_STR(topdown-br-mispredict, td_br_mispredict, "event=0x00,umask=0x85");
EVENT_ATTR_STR(topdown-fetch-lat, td_fetch_lat, "event=0x00,umask=0x86");
EVENT_ATTR_STR(topdown-mem-bound, td_mem_bound, "event=0x00,umask=0x87");
static struct attribute *snb_events_attrs[] = {
EVENT_PTR(td_slots_issued),
EVENT_PTR(td_slots_retired),
EVENT_PTR(td_fetch_bubbles),
EVENT_PTR(td_total_slots),
EVENT_PTR(td_total_slots_scale),
EVENT_PTR(td_recovery_bubbles),
EVENT_PTR(td_recovery_bubbles_scale),
NULL,
};
static struct attribute *snb_mem_events_attrs[] = {
EVENT_PTR(mem_ld_snb),
EVENT_PTR(mem_st_snb),
NULL,
};
static struct event_constraint intel_hsw_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */
INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
/* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
/* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
/* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),
/*
* When HT is off these events can only run on the bottom 4 counters
* When HT is on, they are impacted by the HT bug and require EXCL access
*/
INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
EVENT_CONSTRAINT_END
};
static struct event_constraint intel_bdw_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */
INTEL_UBIT_EVENT_CONSTRAINT(0x8a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */
/*
* when HT is off, these can only run on the bottom 4 counters
*/
INTEL_EVENT_CONSTRAINT(0xd0, 0xf), /* MEM_INST_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_L3_HIT_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xcd, 0xf), /* MEM_TRANS_RETIRED.* */
EVENT_CONSTRAINT_END
};
static u64 intel_pmu_event_map(int hw_event)
{
return intel_perfmon_event_map[hw_event];
}
static __initconst const u64 glc_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0,
[ C(RESULT_MISS) ] = 0xe124,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_MISS) ] = 0xe424,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x12a,
[ C(RESULT_MISS) ] = 0x12a,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x12a,
[ C(RESULT_MISS) ] = 0x12a,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0,
[ C(RESULT_MISS) ] = 0xe12,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0,
[ C(RESULT_MISS) ] = 0xe13,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = 0xe11,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x4c4,
[ C(RESULT_MISS) ] = 0x4c5,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x12a,
[ C(RESULT_MISS) ] = 0x12a,
},
},
};
static __initconst const u64 glc_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x10001,
[ C(RESULT_MISS) ] = 0x3fbfc00001,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x3f3ffc0002,
[ C(RESULT_MISS) ] = 0x3f3fc00002,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x10c000001,
[ C(RESULT_MISS) ] = 0x3fb3000001,
},
},
};
/*
* Notes on the events:
* - data reads do not include code reads (comparable to earlier tables)
* - data counts include speculative execution (except L1 write, dtlb, bpu)
* - remote node access includes remote memory, remote cache, remote mmio.
* - prefetches are not included in the counts.
* - icache miss does not include decoded icache
*/
#define SKL_DEMAND_DATA_RD BIT_ULL(0)
#define SKL_DEMAND_RFO BIT_ULL(1)
#define SKL_ANY_RESPONSE BIT_ULL(16)
#define SKL_SUPPLIER_NONE BIT_ULL(17)
#define SKL_L3_MISS_LOCAL_DRAM BIT_ULL(26)
#define SKL_L3_MISS_REMOTE_HOP0_DRAM BIT_ULL(27)
#define SKL_L3_MISS_REMOTE_HOP1_DRAM BIT_ULL(28)
#define SKL_L3_MISS_REMOTE_HOP2P_DRAM BIT_ULL(29)
#define SKL_L3_MISS (SKL_L3_MISS_LOCAL_DRAM| \
SKL_L3_MISS_REMOTE_HOP0_DRAM| \
SKL_L3_MISS_REMOTE_HOP1_DRAM| \
SKL_L3_MISS_REMOTE_HOP2P_DRAM)
#define SKL_SPL_HIT BIT_ULL(30)
#define SKL_SNOOP_NONE BIT_ULL(31)
#define SKL_SNOOP_NOT_NEEDED BIT_ULL(32)
#define SKL_SNOOP_MISS BIT_ULL(33)
#define SKL_SNOOP_HIT_NO_FWD BIT_ULL(34)
#define SKL_SNOOP_HIT_WITH_FWD BIT_ULL(35)
#define SKL_SNOOP_HITM BIT_ULL(36)
#define SKL_SNOOP_NON_DRAM BIT_ULL(37)
#define SKL_ANY_SNOOP (SKL_SPL_HIT|SKL_SNOOP_NONE| \
SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
SKL_SNOOP_HITM|SKL_SNOOP_NON_DRAM)
#define SKL_DEMAND_READ SKL_DEMAND_DATA_RD
#define SKL_SNOOP_DRAM (SKL_SNOOP_NONE| \
SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
SKL_SNOOP_HITM|SKL_SPL_HIT)
#define SKL_DEMAND_WRITE SKL_DEMAND_RFO
#define SKL_LLC_ACCESS SKL_ANY_RESPONSE
#define SKL_L3_MISS_REMOTE (SKL_L3_MISS_REMOTE_HOP0_DRAM| \
SKL_L3_MISS_REMOTE_HOP1_DRAM| \
SKL_L3_MISS_REMOTE_HOP2P_DRAM)
static __initconst const u64 skl_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_INST_RETIRED.ALL_LOADS */
[ C(RESULT_MISS) ] = 0x151, /* L1D.REPLACEMENT */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_INST_RETIRED.ALL_STORES */
[ C(RESULT_MISS) ] = 0x0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x283, /* ICACHE_64B.MISS */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_INST_RETIRED.ALL_LOADS */
[ C(RESULT_MISS) ] = 0xe08, /* DTLB_LOAD_MISSES.WALK_COMPLETED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_INST_RETIRED.ALL_STORES */
[ C(RESULT_MISS) ] = 0xe49, /* DTLB_STORE_MISSES.WALK_COMPLETED */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x2085, /* ITLB_MISSES.STLB_HIT */
[ C(RESULT_MISS) ] = 0xe85, /* ITLB_MISSES.WALK_COMPLETED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0xc4, /* BR_INST_RETIRED.ALL_BRANCHES */
[ C(RESULT_MISS) ] = 0xc5, /* BR_MISP_RETIRED.ALL_BRANCHES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
};
static __initconst const u64 skl_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = SKL_DEMAND_READ|
SKL_LLC_ACCESS|SKL_ANY_SNOOP,
[ C(RESULT_MISS) ] = SKL_DEMAND_READ|
SKL_L3_MISS|SKL_ANY_SNOOP|
SKL_SUPPLIER_NONE,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
SKL_LLC_ACCESS|SKL_ANY_SNOOP,
[ C(RESULT_MISS) ] = SKL_DEMAND_WRITE|
SKL_L3_MISS|SKL_ANY_SNOOP|
SKL_SUPPLIER_NONE,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = SKL_DEMAND_READ|
SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
[ C(RESULT_MISS) ] = SKL_DEMAND_READ|
SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
[ C(RESULT_MISS) ] = SKL_DEMAND_WRITE|
SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
};
#define SNB_DMND_DATA_RD (1ULL << 0)
#define SNB_DMND_RFO (1ULL << 1)
#define SNB_DMND_IFETCH (1ULL << 2)
#define SNB_DMND_WB (1ULL << 3)
#define SNB_PF_DATA_RD (1ULL << 4)
#define SNB_PF_RFO (1ULL << 5)
#define SNB_PF_IFETCH (1ULL << 6)
#define SNB_LLC_DATA_RD (1ULL << 7)
#define SNB_LLC_RFO (1ULL << 8)
#define SNB_LLC_IFETCH (1ULL << 9)
#define SNB_BUS_LOCKS (1ULL << 10)
#define SNB_STRM_ST (1ULL << 11)
#define SNB_OTHER (1ULL << 15)
#define SNB_RESP_ANY (1ULL << 16)
#define SNB_NO_SUPP (1ULL << 17)
#define SNB_LLC_HITM (1ULL << 18)
#define SNB_LLC_HITE (1ULL << 19)
#define SNB_LLC_HITS (1ULL << 20)
#define SNB_LLC_HITF (1ULL << 21)
#define SNB_LOCAL (1ULL << 22)
#define SNB_REMOTE (0xffULL << 23)
#define SNB_SNP_NONE (1ULL << 31)
#define SNB_SNP_NOT_NEEDED (1ULL << 32)
#define SNB_SNP_MISS (1ULL << 33)
#define SNB_NO_FWD (1ULL << 34)
#define SNB_SNP_FWD (1ULL << 35)
#define SNB_HITM (1ULL << 36)
#define SNB_NON_DRAM (1ULL << 37)
#define SNB_DMND_READ (SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
#define SNB_DMND_WRITE (SNB_DMND_RFO|SNB_LLC_RFO)
#define SNB_DMND_PREFETCH (SNB_PF_DATA_RD|SNB_PF_RFO)
#define SNB_SNP_ANY (SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
SNB_HITM)
#define SNB_DRAM_ANY (SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
#define SNB_DRAM_REMOTE (SNB_REMOTE|SNB_SNP_ANY)
#define SNB_L3_ACCESS SNB_RESP_ANY
#define SNB_L3_MISS (SNB_DRAM_ANY|SNB_NON_DRAM)
static __initconst const u64 snb_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
[ C(RESULT_MISS) ] = SNB_DMND_READ|SNB_L3_MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
[ C(RESULT_MISS) ] = SNB_DMND_WRITE|SNB_L3_MISS,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
[ C(RESULT_MISS) ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
[ C(RESULT_MISS) ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
[ C(RESULT_MISS) ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
[ C(RESULT_MISS) ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
},
},
};
static __initconst const u64 snb_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS */
[ C(RESULT_MISS) ] = 0x0151, /* L1D.REPLACEMENT */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES */
[ C(RESULT_MISS) ] = 0x0851, /* L1D.ALL_M_REPLACEMENT */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x024e, /* HW_PRE_REQ.DL1_MISS */
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0280, /* ICACHE.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_WRITE) ] = {
/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
[ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
[ C(RESULT_MISS) ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT */
[ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
[ C(RESULT_MISS) ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
},
};
/*
* Notes on the events:
* - data reads do not include code reads (comparable to earlier tables)
* - data counts include speculative execution (except L1 write, dtlb, bpu)
* - remote node access includes remote memory, remote cache, remote mmio.
* - prefetches are not included in the counts because they are not
* reliably counted.
*/
#define HSW_DEMAND_DATA_RD BIT_ULL(0)
#define HSW_DEMAND_RFO BIT_ULL(1)
#define HSW_ANY_RESPONSE BIT_ULL(16)
#define HSW_SUPPLIER_NONE BIT_ULL(17)
#define HSW_L3_MISS_LOCAL_DRAM BIT_ULL(22)
#define HSW_L3_MISS_REMOTE_HOP0 BIT_ULL(27)
#define HSW_L3_MISS_REMOTE_HOP1 BIT_ULL(28)
#define HSW_L3_MISS_REMOTE_HOP2P BIT_ULL(29)
#define HSW_L3_MISS (HSW_L3_MISS_LOCAL_DRAM| \
HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
HSW_L3_MISS_REMOTE_HOP2P)
#define HSW_SNOOP_NONE BIT_ULL(31)
#define HSW_SNOOP_NOT_NEEDED BIT_ULL(32)
#define HSW_SNOOP_MISS BIT_ULL(33)
#define HSW_SNOOP_HIT_NO_FWD BIT_ULL(34)
#define HSW_SNOOP_HIT_WITH_FWD BIT_ULL(35)
#define HSW_SNOOP_HITM BIT_ULL(36)
#define HSW_SNOOP_NON_DRAM BIT_ULL(37)
#define HSW_ANY_SNOOP (HSW_SNOOP_NONE| \
HSW_SNOOP_NOT_NEEDED|HSW_SNOOP_MISS| \
HSW_SNOOP_HIT_NO_FWD|HSW_SNOOP_HIT_WITH_FWD| \
HSW_SNOOP_HITM|HSW_SNOOP_NON_DRAM)
#define HSW_SNOOP_DRAM (HSW_ANY_SNOOP & ~HSW_SNOOP_NON_DRAM)
#define HSW_DEMAND_READ HSW_DEMAND_DATA_RD
#define HSW_DEMAND_WRITE HSW_DEMAND_RFO
#define HSW_L3_MISS_REMOTE (HSW_L3_MISS_REMOTE_HOP0|\
HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
#define HSW_LLC_ACCESS HSW_ANY_RESPONSE
#define BDW_L3_MISS_LOCAL BIT(26)
#define BDW_L3_MISS (BDW_L3_MISS_LOCAL| \
HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
HSW_L3_MISS_REMOTE_HOP2P)
static __initconst const u64 hsw_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[ C(RESULT_MISS) ] = 0x151, /* L1D.REPLACEMENT */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[ C(RESULT_MISS) ] = 0x0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x280, /* ICACHE.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[ C(RESULT_MISS) ] = 0x108, /* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[ C(RESULT_MISS) ] = 0x149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x6085, /* ITLB_MISSES.STLB_HIT */
[ C(RESULT_MISS) ] = 0x185, /* ITLB_MISSES.MISS_CAUSES_A_WALK */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0xc4, /* BR_INST_RETIRED.ALL_BRANCHES */
[ C(RESULT_MISS) ] = 0xc5, /* BR_MISP_RETIRED.ALL_BRANCHES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
[ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
};
static __initconst const u64 hsw_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
HSW_LLC_ACCESS,
[ C(RESULT_MISS) ] = HSW_DEMAND_READ|
HSW_L3_MISS|HSW_ANY_SNOOP,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
HSW_LLC_ACCESS,
[ C(RESULT_MISS) ] = HSW_DEMAND_WRITE|
HSW_L3_MISS|HSW_ANY_SNOOP,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
HSW_L3_MISS_LOCAL_DRAM|
HSW_SNOOP_DRAM,
[ C(RESULT_MISS) ] = HSW_DEMAND_READ|
HSW_L3_MISS_REMOTE|
HSW_SNOOP_DRAM,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
HSW_L3_MISS_LOCAL_DRAM|
HSW_SNOOP_DRAM,
[ C(RESULT_MISS) ] = HSW_DEMAND_WRITE|
HSW_L3_MISS_REMOTE|
HSW_SNOOP_DRAM,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
};
static __initconst const u64 westmere_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
[ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
[ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
[ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
[ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
/*
* Use RFO, not WRITEBACK, because a write miss would typically occur
* on RFO.
*/
[ C(OP_WRITE) ] = {
/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
[ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
[ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
[ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.ANY */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
[ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
},
};
/*
* Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
* See IA32 SDM Vol 3B 30.6.1.3
*/
#define NHM_DMND_DATA_RD (1 << 0)
#define NHM_DMND_RFO (1 << 1)
#define NHM_DMND_IFETCH (1 << 2)
#define NHM_DMND_WB (1 << 3)
#define NHM_PF_DATA_RD (1 << 4)
#define NHM_PF_DATA_RFO (1 << 5)
#define NHM_PF_IFETCH (1 << 6)
#define NHM_OFFCORE_OTHER (1 << 7)
#define NHM_UNCORE_HIT (1 << 8)
#define NHM_OTHER_CORE_HIT_SNP (1 << 9)
#define NHM_OTHER_CORE_HITM (1 << 10)
/* reserved */
#define NHM_REMOTE_CACHE_FWD (1 << 12)
#define NHM_REMOTE_DRAM (1 << 13)
#define NHM_LOCAL_DRAM (1 << 14)
#define NHM_NON_DRAM (1 << 15)
#define NHM_LOCAL (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
#define NHM_REMOTE (NHM_REMOTE_DRAM)
#define NHM_DMND_READ (NHM_DMND_DATA_RD)
#define NHM_DMND_WRITE (NHM_DMND_RFO|NHM_DMND_WB)
#define NHM_DMND_PREFETCH (NHM_PF_DATA_RD|NHM_PF_DATA_RFO)
#define NHM_L3_HIT (NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
#define NHM_L3_MISS (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
#define NHM_L3_ACCESS (NHM_L3_HIT|NHM_L3_MISS)
static __initconst const u64 nehalem_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
[ C(RESULT_MISS) ] = NHM_DMND_READ|NHM_L3_MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
[ C(RESULT_MISS) ] = NHM_DMND_WRITE|NHM_L3_MISS,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
[ C(RESULT_MISS) ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
[ C(RESULT_MISS) ] = NHM_DMND_READ|NHM_REMOTE,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
[ C(RESULT_MISS) ] = NHM_DMND_WRITE|NHM_REMOTE,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
[ C(RESULT_MISS) ] = NHM_DMND_PREFETCH|NHM_REMOTE,
},
},
};
static __initconst const u64 nehalem_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
[ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
[ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
[ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
[ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
/*
* Use RFO, not WRITEBACK, because a write miss would typically occur
* on RFO.
*/
[ C(OP_WRITE) ] = {
/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
[ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
[ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0x0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
[ C(RESULT_MISS) ] = 0x20c8, /* ITLB_MISS_RETIRED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
[ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0x01b7,
},
},
};
static __initconst const u64 core2_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
[ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
[ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS */
[ C(RESULT_MISS) ] = 0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS */
[ C(RESULT_MISS) ] = 0x0081, /* L1I.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
[ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
[ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
[ C(RESULT_MISS) ] = 0x0208, /* DTLB_MISSES.MISS_LD */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
[ C(RESULT_MISS) ] = 0x0808, /* DTLB_MISSES.MISS_ST */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
[ C(RESULT_MISS) ] = 0x1282, /* ITLBMISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
[ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
};
static __initconst const u64 atom_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD */
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST */
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0x0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
[ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
[ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
[ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI (alias) */
[ C(RESULT_MISS) ] = 0x0508, /* DTLB_MISSES.MISS_LD */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI (alias) */
[ C(RESULT_MISS) ] = 0x0608, /* DTLB_MISSES.MISS_ST */
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
[ C(RESULT_MISS) ] = 0x0282, /* ITLB.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
[ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
};
EVENT_ATTR_STR(topdown-total-slots, td_total_slots_slm, "event=0x3c");
EVENT_ATTR_STR(topdown-total-slots.scale, td_total_slots_scale_slm, "2");
/* no_alloc_cycles.not_delivered */
EVENT_ATTR_STR(topdown-fetch-bubbles, td_fetch_bubbles_slm,
"event=0xca,umask=0x50");
EVENT_ATTR_STR(topdown-fetch-bubbles.scale, td_fetch_bubbles_scale_slm, "2");
/* uops_retired.all */
EVENT_ATTR_STR(topdown-slots-issued, td_slots_issued_slm,
"event=0xc2,umask=0x10");
/* uops_retired.all */
EVENT_ATTR_STR(topdown-slots-retired, td_slots_retired_slm,
"event=0xc2,umask=0x10");
static struct attribute *slm_events_attrs[] = {
EVENT_PTR(td_total_slots_slm),
EVENT_PTR(td_total_slots_scale_slm),
EVENT_PTR(td_fetch_bubbles_slm),
EVENT_PTR(td_fetch_bubbles_scale_slm),
EVENT_PTR(td_slots_issued_slm),
EVENT_PTR(td_slots_retired_slm),
NULL
};
static struct extra_reg intel_slm_extra_regs[] __read_mostly =
{
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x368005ffffull, RSP_1),
EVENT_EXTRA_END
};
#define SLM_DMND_READ SNB_DMND_DATA_RD
#define SLM_DMND_WRITE SNB_DMND_RFO
#define SLM_DMND_PREFETCH (SNB_PF_DATA_RD|SNB_PF_RFO)
#define SLM_SNP_ANY (SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
#define SLM_LLC_ACCESS SNB_RESP_ANY
#define SLM_LLC_MISS (SLM_SNP_ANY|SNB_NON_DRAM)
static __initconst const u64 slm_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(LL ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
[ C(RESULT_MISS) ] = SLM_DMND_WRITE|SLM_LLC_MISS,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
[ C(RESULT_MISS) ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
},
},
};
static __initconst const u64 slm_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0x0104, /* LD_DCU_MISS */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(L1I ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
[ C(RESULT_MISS) ] = 0x0280, /* ICACGE.MISSES */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(LL ) ] = {
[ C(OP_READ) ] = {
/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_WRITE) ] = {
/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
[ C(OP_PREFETCH) ] = {
/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
[ C(RESULT_ACCESS) ] = 0x01b7,
/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
[ C(RESULT_MISS) ] = 0x01b7,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0x0804, /* LD_DTLB_MISS */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
[ C(RESULT_MISS) ] = 0x40205, /* PAGE_WALKS.I_SIDE_WALKS */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU ) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
[ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
};
EVENT_ATTR_STR(topdown-total-slots, td_total_slots_glm, "event=0x3c");
EVENT_ATTR_STR(topdown-total-slots.scale, td_total_slots_scale_glm, "3");
/* UOPS_NOT_DELIVERED.ANY */
EVENT_ATTR_STR(topdown-fetch-bubbles, td_fetch_bubbles_glm, "event=0x9c");
/* ISSUE_SLOTS_NOT_CONSUMED.RECOVERY */
EVENT_ATTR_STR(topdown-recovery-bubbles, td_recovery_bubbles_glm, "event=0xca,umask=0x02");
/* UOPS_RETIRED.ANY */
EVENT_ATTR_STR(topdown-slots-retired, td_slots_retired_glm, "event=0xc2");
/* UOPS_ISSUED.ANY */
EVENT_ATTR_STR(topdown-slots-issued, td_slots_issued_glm, "event=0x0e");
static struct attribute *glm_events_attrs[] = {
EVENT_PTR(td_total_slots_glm),
EVENT_PTR(td_total_slots_scale_glm),
EVENT_PTR(td_fetch_bubbles_glm),
EVENT_PTR(td_recovery_bubbles_glm),
EVENT_PTR(td_slots_issued_glm),
EVENT_PTR(td_slots_retired_glm),
NULL
};
static struct extra_reg intel_glm_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x760005ffbfull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x360005ffbfull, RSP_1),
EVENT_EXTRA_END
};
#define GLM_DEMAND_DATA_RD BIT_ULL(0)
#define GLM_DEMAND_RFO BIT_ULL(1)
#define GLM_ANY_RESPONSE BIT_ULL(16)
#define GLM_SNP_NONE_OR_MISS BIT_ULL(33)
#define GLM_DEMAND_READ GLM_DEMAND_DATA_RD
#define GLM_DEMAND_WRITE GLM_DEMAND_RFO
#define GLM_DEMAND_PREFETCH (SNB_PF_DATA_RD|SNB_PF_RFO)
#define GLM_LLC_ACCESS GLM_ANY_RESPONSE
#define GLM_SNP_ANY (GLM_SNP_NONE_OR_MISS|SNB_NO_FWD|SNB_HITM)
#define GLM_LLC_MISS (GLM_SNP_ANY|SNB_NON_DRAM)
static __initconst const u64 glm_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x0380, /* ICACHE.ACCESSES */
[C(RESULT_MISS)] = 0x0280, /* ICACHE.MISSES */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x1b7, /* OFFCORE_RESPONSE */
[C(RESULT_MISS)] = 0x1b7, /* OFFCORE_RESPONSE */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x1b7, /* OFFCORE_RESPONSE */
[C(RESULT_MISS)] = 0x1b7, /* OFFCORE_RESPONSE */
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x1b7, /* OFFCORE_RESPONSE */
[C(RESULT_MISS)] = 0x1b7, /* OFFCORE_RESPONSE */
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x00c0, /* INST_RETIRED.ANY_P */
[C(RESULT_MISS)] = 0x0481, /* ITLB.MISS */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
[C(RESULT_MISS)] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
};
static __initconst const u64 glm_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = GLM_DEMAND_READ|
GLM_LLC_ACCESS,
[C(RESULT_MISS)] = GLM_DEMAND_READ|
GLM_LLC_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = GLM_DEMAND_WRITE|
GLM_LLC_ACCESS,
[C(RESULT_MISS)] = GLM_DEMAND_WRITE|
GLM_LLC_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = GLM_DEMAND_PREFETCH|
GLM_LLC_ACCESS,
[C(RESULT_MISS)] = GLM_DEMAND_PREFETCH|
GLM_LLC_MISS,
},
},
};
static __initconst const u64 glp_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[C(RESULT_MISS)] = 0x0,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x0380, /* ICACHE.ACCESSES */
[C(RESULT_MISS)] = 0x0280, /* ICACHE.MISSES */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x1b7, /* OFFCORE_RESPONSE */
[C(RESULT_MISS)] = 0x1b7, /* OFFCORE_RESPONSE */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x1b7, /* OFFCORE_RESPONSE */
[C(RESULT_MISS)] = 0x1b7, /* OFFCORE_RESPONSE */
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
[C(RESULT_MISS)] = 0xe08, /* DTLB_LOAD_MISSES.WALK_COMPLETED */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
[C(RESULT_MISS)] = 0xe49, /* DTLB_STORE_MISSES.WALK_COMPLETED */
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x00c0, /* INST_RETIRED.ANY_P */
[C(RESULT_MISS)] = 0x0481, /* ITLB.MISS */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
[C(RESULT_MISS)] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
};
static __initconst const u64 glp_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = GLM_DEMAND_READ|
GLM_LLC_ACCESS,
[C(RESULT_MISS)] = GLM_DEMAND_READ|
GLM_LLC_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = GLM_DEMAND_WRITE|
GLM_LLC_ACCESS,
[C(RESULT_MISS)] = GLM_DEMAND_WRITE|
GLM_LLC_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
};
#define TNT_LOCAL_DRAM BIT_ULL(26)
#define TNT_DEMAND_READ GLM_DEMAND_DATA_RD
#define TNT_DEMAND_WRITE GLM_DEMAND_RFO
#define TNT_LLC_ACCESS GLM_ANY_RESPONSE
#define TNT_SNP_ANY (SNB_SNP_NOT_NEEDED|SNB_SNP_MISS| \
SNB_NO_FWD|SNB_SNP_FWD|SNB_HITM)
#define TNT_LLC_MISS (TNT_SNP_ANY|SNB_NON_DRAM|TNT_LOCAL_DRAM)
static __initconst const u64 tnt_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = TNT_DEMAND_READ|
TNT_LLC_ACCESS,
[C(RESULT_MISS)] = TNT_DEMAND_READ|
TNT_LLC_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = TNT_DEMAND_WRITE|
TNT_LLC_ACCESS,
[C(RESULT_MISS)] = TNT_DEMAND_WRITE|
TNT_LLC_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = 0x0,
[C(RESULT_MISS)] = 0x0,
},
},
};
EVENT_ATTR_STR(topdown-fe-bound, td_fe_bound_tnt, "event=0x71,umask=0x0");
EVENT_ATTR_STR(topdown-retiring, td_retiring_tnt, "event=0xc2,umask=0x0");
EVENT_ATTR_STR(topdown-bad-spec, td_bad_spec_tnt, "event=0x73,umask=0x6");
EVENT_ATTR_STR(topdown-be-bound, td_be_bound_tnt, "event=0x74,umask=0x0");
static struct attribute *tnt_events_attrs[] = {
EVENT_PTR(td_fe_bound_tnt),
EVENT_PTR(td_retiring_tnt),
EVENT_PTR(td_bad_spec_tnt),
EVENT_PTR(td_be_bound_tnt),
NULL,
};
static struct extra_reg intel_tnt_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x800ff0ffffff9fffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0xff0ffffff9fffull, RSP_1),
EVENT_EXTRA_END
};
EVENT_ATTR_STR(mem-loads, mem_ld_grt, "event=0xd0,umask=0x5,ldlat=3");
EVENT_ATTR_STR(mem-stores, mem_st_grt, "event=0xd0,umask=0x6");
static struct attribute *grt_mem_attrs[] = {
EVENT_PTR(mem_ld_grt),
EVENT_PTR(mem_st_grt),
NULL
};
static struct extra_reg intel_grt_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x5d0),
EVENT_EXTRA_END
};
EVENT_ATTR_STR(topdown-retiring, td_retiring_cmt, "event=0x72,umask=0x0");
EVENT_ATTR_STR(topdown-bad-spec, td_bad_spec_cmt, "event=0x73,umask=0x0");
static struct attribute *cmt_events_attrs[] = {
EVENT_PTR(td_fe_bound_tnt),
EVENT_PTR(td_retiring_cmt),
EVENT_PTR(td_bad_spec_cmt),
EVENT_PTR(td_be_bound_tnt),
NULL
};
static struct extra_reg intel_cmt_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x800ff3ffffffffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0xff3ffffffffffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x5d0),
INTEL_UEVENT_EXTRA_REG(0x0127, MSR_SNOOP_RSP_0, 0xffffffffffffffffull, SNOOP_0),
INTEL_UEVENT_EXTRA_REG(0x0227, MSR_SNOOP_RSP_1, 0xffffffffffffffffull, SNOOP_1),
EVENT_EXTRA_END
};
#define KNL_OT_L2_HITE BIT_ULL(19) /* Other Tile L2 Hit */
#define KNL_OT_L2_HITF BIT_ULL(20) /* Other Tile L2 Hit */
#define KNL_MCDRAM_LOCAL BIT_ULL(21)
#define KNL_MCDRAM_FAR BIT_ULL(22)
#define KNL_DDR_LOCAL BIT_ULL(23)
#define KNL_DDR_FAR BIT_ULL(24)
#define KNL_DRAM_ANY (KNL_MCDRAM_LOCAL | KNL_MCDRAM_FAR | \
KNL_DDR_LOCAL | KNL_DDR_FAR)
#define KNL_L2_READ SLM_DMND_READ
#define KNL_L2_WRITE SLM_DMND_WRITE
#define KNL_L2_PREFETCH SLM_DMND_PREFETCH
#define KNL_L2_ACCESS SLM_LLC_ACCESS
#define KNL_L2_MISS (KNL_OT_L2_HITE | KNL_OT_L2_HITF | \
KNL_DRAM_ANY | SNB_SNP_ANY | \
SNB_NON_DRAM)
static __initconst const u64 knl_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = KNL_L2_READ | KNL_L2_ACCESS,
[C(RESULT_MISS)] = 0,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = KNL_L2_WRITE | KNL_L2_ACCESS,
[C(RESULT_MISS)] = KNL_L2_WRITE | KNL_L2_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = KNL_L2_PREFETCH | KNL_L2_ACCESS,
[C(RESULT_MISS)] = KNL_L2_PREFETCH | KNL_L2_MISS,
},
},
};
/*
* Used from PMIs where the LBRs are already disabled.
*
* This function could be called consecutively. It is required to remain in
* disabled state if called consecutively.
*
* During consecutive calls, the same disable value will be written to related
* registers, so the PMU state remains unchanged.
*
* intel_bts events don't coexist with intel PMU's BTS events because of
* x86_add_exclusive(x86_lbr_exclusive_lbr); there's no need to keep them
* disabled around intel PMU's event batching etc, only inside the PMI handler.
*
* Avoid PEBS_ENABLE MSR access in PMIs.
* The GLOBAL_CTRL has been disabled. All the counters do not count anymore.
* It doesn't matter if the PEBS is enabled or not.
* Usually, the PEBS status are not changed in PMIs. It's unnecessary to
* access PEBS_ENABLE MSR in disable_all()/enable_all().
* However, there are some cases which may change PEBS status, e.g. PMI
* throttle. The PEBS_ENABLE should be updated where the status changes.
*/
static __always_inline void __intel_pmu_disable_all(bool bts)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
if (bts && test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
intel_pmu_disable_bts();
}
static __always_inline void intel_pmu_disable_all(void)
{
__intel_pmu_disable_all(true);
intel_pmu_pebs_disable_all();
intel_pmu_lbr_disable_all();
}
static void __intel_pmu_enable_all(int added, bool pmi)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
u64 intel_ctrl = hybrid(cpuc->pmu, intel_ctrl);
intel_pmu_lbr_enable_all(pmi);
if (cpuc->fixed_ctrl_val != cpuc->active_fixed_ctrl_val) {
wrmsrl(MSR_ARCH_PERFMON_FIXED_CTR_CTRL, cpuc->fixed_ctrl_val);
cpuc->active_fixed_ctrl_val = cpuc->fixed_ctrl_val;
}
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
struct perf_event *event =
cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
if (WARN_ON_ONCE(!event))
return;
intel_pmu_enable_bts(event->hw.config);
}
}
static void intel_pmu_enable_all(int added)
{
intel_pmu_pebs_enable_all();
__intel_pmu_enable_all(added, false);
}
static noinline int
__intel_pmu_snapshot_branch_stack(struct perf_branch_entry *entries,
unsigned int cnt, unsigned long flags)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
intel_pmu_lbr_read();
cnt = min_t(unsigned int, cnt, x86_pmu.lbr_nr);
memcpy(entries, cpuc->lbr_entries, sizeof(struct perf_branch_entry) * cnt);
intel_pmu_enable_all(0);
local_irq_restore(flags);
return cnt;
}
static int
intel_pmu_snapshot_branch_stack(struct perf_branch_entry *entries, unsigned int cnt)
{
unsigned long flags;
/* must not have branches... */
local_irq_save(flags);
__intel_pmu_disable_all(false); /* we don't care about BTS */
__intel_pmu_lbr_disable();
/* ... until here */
return __intel_pmu_snapshot_branch_stack(entries, cnt, flags);
}
static int
intel_pmu_snapshot_arch_branch_stack(struct perf_branch_entry *entries, unsigned int cnt)
{
unsigned long flags;
/* must not have branches... */
local_irq_save(flags);
__intel_pmu_disable_all(false); /* we don't care about BTS */
__intel_pmu_arch_lbr_disable();
/* ... until here */
return __intel_pmu_snapshot_branch_stack(entries, cnt, flags);
}
/*
* Workaround for:
* Intel Errata AAK100 (model 26)
* Intel Errata AAP53 (model 30)
* Intel Errata BD53 (model 44)
*
* The official story:
* These chips need to be 'reset' when adding counters by programming the
* magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
* in sequence on the same PMC or on different PMCs.
*
* In practice it appears some of these events do in fact count, and
* we need to program all 4 events.
*/
static void intel_pmu_nhm_workaround(void)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
static const unsigned long nhm_magic[4] = {
0x4300B5,
0x4300D2,
0x4300B1,
0x4300B1
};
struct perf_event *event;
int i;
/*
* The Errata requires below steps:
* 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
* 2) Configure 4 PERFEVTSELx with the magic events and clear
* the corresponding PMCx;
* 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
* 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
* 5) Clear 4 pairs of ERFEVTSELx and PMCx;
*/
/*
* The real steps we choose are a little different from above.
* A) To reduce MSR operations, we don't run step 1) as they
* are already cleared before this function is called;
* B) Call x86_perf_event_update to save PMCx before configuring
* PERFEVTSELx with magic number;
* C) With step 5), we do clear only when the PERFEVTSELx is
* not used currently.
* D) Call x86_perf_event_set_period to restore PMCx;
*/
/* We always operate 4 pairs of PERF Counters */
for (i = 0; i < 4; i++) {
event = cpuc->events[i];
if (event)
static_call(x86_pmu_update)(event);
}
for (i = 0; i < 4; i++) {
wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
}
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
for (i = 0; i < 4; i++) {
event = cpuc->events[i];
if (event) {
static_call(x86_pmu_set_period)(event);
__x86_pmu_enable_event(&event->hw,
ARCH_PERFMON_EVENTSEL_ENABLE);
} else
wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
}
}
static void intel_pmu_nhm_enable_all(int added)
{
if (added)
intel_pmu_nhm_workaround();
intel_pmu_enable_all(added);
}
static void intel_set_tfa(struct cpu_hw_events *cpuc, bool on)
{
u64 val = on ? MSR_TFA_RTM_FORCE_ABORT : 0;
if (cpuc->tfa_shadow != val) {
cpuc->tfa_shadow = val;
wrmsrl(MSR_TSX_FORCE_ABORT, val);
}
}
static void intel_tfa_commit_scheduling(struct cpu_hw_events *cpuc, int idx, int cntr)
{
/*
* We're going to use PMC3, make sure TFA is set before we touch it.
*/
if (cntr == 3)
intel_set_tfa(cpuc, true);
}
static void intel_tfa_pmu_enable_all(int added)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
/*
* If we find PMC3 is no longer used when we enable the PMU, we can
* clear TFA.
*/
if (!test_bit(3, cpuc->active_mask))
intel_set_tfa(cpuc, false);
intel_pmu_enable_all(added);
}
static inline u64 intel_pmu_get_status(void)
{
u64 status;
rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
return status;
}
static inline void intel_pmu_ack_status(u64 ack)
{
wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
}
static inline bool event_is_checkpointed(struct perf_event *event)
{
return unlikely(event->hw.config & HSW_IN_TX_CHECKPOINTED) != 0;
}
static inline void intel_set_masks(struct perf_event *event, int idx)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
if (event->attr.exclude_host)
__set_bit(idx, (unsigned long *)&cpuc->intel_ctrl_guest_mask);
if (event->attr.exclude_guest)
__set_bit(idx, (unsigned long *)&cpuc->intel_ctrl_host_mask);
if (event_is_checkpointed(event))
__set_bit(idx, (unsigned long *)&cpuc->intel_cp_status);
}
static inline void intel_clear_masks(struct perf_event *event, int idx)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
__clear_bit(idx, (unsigned long *)&cpuc->intel_ctrl_guest_mask);
__clear_bit(idx, (unsigned long *)&cpuc->intel_ctrl_host_mask);
__clear_bit(idx, (unsigned long *)&cpuc->intel_cp_status);
}
static void intel_pmu_disable_fixed(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
u64 mask;
if (is_topdown_idx(idx)) {
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
/*
* When there are other active TopDown events,
* don't disable the fixed counter 3.
*/
if (*(u64 *)cpuc->active_mask & INTEL_PMC_OTHER_TOPDOWN_BITS(idx))
return;
idx = INTEL_PMC_IDX_FIXED_SLOTS;
}
intel_clear_masks(event, idx);
mask = intel_fixed_bits_by_idx(idx - INTEL_PMC_IDX_FIXED, INTEL_FIXED_BITS_MASK);
cpuc->fixed_ctrl_val &= ~mask;
}
static void intel_pmu_disable_event(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
switch (idx) {
case 0 ... INTEL_PMC_IDX_FIXED - 1:
intel_clear_masks(event, idx);
x86_pmu_disable_event(event);
break;
case INTEL_PMC_IDX_FIXED ... INTEL_PMC_IDX_FIXED_BTS - 1:
case INTEL_PMC_IDX_METRIC_BASE ... INTEL_PMC_IDX_METRIC_END:
intel_pmu_disable_fixed(event);
break;
case INTEL_PMC_IDX_FIXED_BTS:
intel_pmu_disable_bts();
intel_pmu_drain_bts_buffer();
return;
case INTEL_PMC_IDX_FIXED_VLBR:
intel_clear_masks(event, idx);
break;
default:
intel_clear_masks(event, idx);
pr_warn("Failed to disable the event with invalid index %d\n",
idx);
return;
}
/*
* Needs to be called after x86_pmu_disable_event,
* so we don't trigger the event without PEBS bit set.
*/
if (unlikely(event->attr.precise_ip))
intel_pmu_pebs_disable(event);
}
static void intel_pmu_assign_event(struct perf_event *event, int idx)
{
if (is_pebs_pt(event))
perf_report_aux_output_id(event, idx);
}
static __always_inline bool intel_pmu_needs_branch_stack(struct perf_event *event)
{
return event->hw.flags & PERF_X86_EVENT_NEEDS_BRANCH_STACK;
}
static void intel_pmu_del_event(struct perf_event *event)
{
if (intel_pmu_needs_branch_stack(event))
intel_pmu_lbr_del(event);
if (event->attr.precise_ip)
intel_pmu_pebs_del(event);
}
static int icl_set_topdown_event_period(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
s64 left = local64_read(&hwc->period_left);
/*
* The values in PERF_METRICS MSR are derived from fixed counter 3.
* Software should start both registers, PERF_METRICS and fixed
* counter 3, from zero.
* Clear PERF_METRICS and Fixed counter 3 in initialization.
* After that, both MSRs will be cleared for each read.
* Don't need to clear them again.
*/
if (left == x86_pmu.max_period) {
wrmsrl(MSR_CORE_PERF_FIXED_CTR3, 0);
wrmsrl(MSR_PERF_METRICS, 0);
hwc->saved_slots = 0;
hwc->saved_metric = 0;
}
if ((hwc->saved_slots) && is_slots_event(event)) {
wrmsrl(MSR_CORE_PERF_FIXED_CTR3, hwc->saved_slots);
wrmsrl(MSR_PERF_METRICS, hwc->saved_metric);
}
perf_event_update_userpage(event);
return 0;
}
DEFINE_STATIC_CALL(intel_pmu_set_topdown_event_period, x86_perf_event_set_period);
static inline u64 icl_get_metrics_event_value(u64 metric, u64 slots, int idx)
{
u32 val;
/*
* The metric is reported as an 8bit integer fraction
* summing up to 0xff.
* slots-in-metric = (Metric / 0xff) * slots
*/
val = (metric >> ((idx - INTEL_PMC_IDX_METRIC_BASE) * 8)) & 0xff;
return mul_u64_u32_div(slots, val, 0xff);
}
static u64 icl_get_topdown_value(struct perf_event *event,
u64 slots, u64 metrics)
{
int idx = event->hw.idx;
u64 delta;
if (is_metric_idx(idx))
delta = icl_get_metrics_event_value(metrics, slots, idx);
else
delta = slots;
return delta;
}
static void __icl_update_topdown_event(struct perf_event *event,
u64 slots, u64 metrics,
u64 last_slots, u64 last_metrics)
{
u64 delta, last = 0;
delta = icl_get_topdown_value(event, slots, metrics);
if (last_slots)
last = icl_get_topdown_value(event, last_slots, last_metrics);
/*
* The 8bit integer fraction of metric may be not accurate,
* especially when the changes is very small.
* For example, if only a few bad_spec happens, the fraction
* may be reduced from 1 to 0. If so, the bad_spec event value
* will be 0 which is definitely less than the last value.
* Avoid update event->count for this case.
*/
if (delta > last) {
delta -= last;
local64_add(delta, &event->count);
}
}
static void update_saved_topdown_regs(struct perf_event *event, u64 slots,
u64 metrics, int metric_end)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct perf_event *other;
int idx;
event->hw.saved_slots = slots;
event->hw.saved_metric = metrics;
for_each_set_bit(idx, cpuc->active_mask, metric_end + 1) {
if (!is_topdown_idx(idx))
continue;
other = cpuc->events[idx];
other->hw.saved_slots = slots;
other->hw.saved_metric = metrics;
}
}
/*
* Update all active Topdown events.
*
* The PERF_METRICS and Fixed counter 3 are read separately. The values may be
* modify by a NMI. PMU has to be disabled before calling this function.
*/
static u64 intel_update_topdown_event(struct perf_event *event, int metric_end)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct perf_event *other;
u64 slots, metrics;
bool reset = true;
int idx;
/* read Fixed counter 3 */
rdpmcl((3 | INTEL_PMC_FIXED_RDPMC_BASE), slots);
if (!slots)
return 0;
/* read PERF_METRICS */
rdpmcl(INTEL_PMC_FIXED_RDPMC_METRICS, metrics);
for_each_set_bit(idx, cpuc->active_mask, metric_end + 1) {
if (!is_topdown_idx(idx))
continue;
other = cpuc->events[idx];
__icl_update_topdown_event(other, slots, metrics,
event ? event->hw.saved_slots : 0,
event ? event->hw.saved_metric : 0);
}
/*
* Check and update this event, which may have been cleared
* in active_mask e.g. x86_pmu_stop()
*/
if (event && !test_bit(event->hw.idx, cpuc->active_mask)) {
__icl_update_topdown_event(event, slots, metrics,
event->hw.saved_slots,
event->hw.saved_metric);
/*
* In x86_pmu_stop(), the event is cleared in active_mask first,
* then drain the delta, which indicates context switch for
* counting.
* Save metric and slots for context switch.
* Don't need to reset the PERF_METRICS and Fixed counter 3.
* Because the values will be restored in next schedule in.
*/
update_saved_topdown_regs(event, slots, metrics, metric_end);
reset = false;
}
if (reset) {
/* The fixed counter 3 has to be written before the PERF_METRICS. */
wrmsrl(MSR_CORE_PERF_FIXED_CTR3, 0);
wrmsrl(MSR_PERF_METRICS, 0);
if (event)
update_saved_topdown_regs(event, 0, 0, metric_end);
}
return slots;
}
static u64 icl_update_topdown_event(struct perf_event *event)
{
return intel_update_topdown_event(event, INTEL_PMC_IDX_METRIC_BASE +
x86_pmu.num_topdown_events - 1);
}
DEFINE_STATIC_CALL(intel_pmu_update_topdown_event, x86_perf_event_update);
static void intel_pmu_read_topdown_event(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
/* Only need to call update_topdown_event() once for group read. */
if ((cpuc->txn_flags & PERF_PMU_TXN_READ) &&
!is_slots_event(event))
return;
perf_pmu_disable(event->pmu);
static_call(intel_pmu_update_topdown_event)(event);
perf_pmu_enable(event->pmu);
}
static void intel_pmu_read_event(struct perf_event *event)
{
if (event->hw.flags & PERF_X86_EVENT_AUTO_RELOAD)
intel_pmu_auto_reload_read(event);
else if (is_topdown_count(event))
intel_pmu_read_topdown_event(event);
else
x86_perf_event_update(event);
}
static void intel_pmu_enable_fixed(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct hw_perf_event *hwc = &event->hw;
u64 mask, bits = 0;
int idx = hwc->idx;
if (is_topdown_idx(idx)) {
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
/*
* When there are other active TopDown events,
* don't enable the fixed counter 3 again.
*/
if (*(u64 *)cpuc->active_mask & INTEL_PMC_OTHER_TOPDOWN_BITS(idx))
return;
idx = INTEL_PMC_IDX_FIXED_SLOTS;
}
intel_set_masks(event, idx);
/*
* Enable IRQ generation (0x8), if not PEBS,
* and enable ring-3 counting (0x2) and ring-0 counting (0x1)
* if requested:
*/
if (!event->attr.precise_ip)
bits |= INTEL_FIXED_0_ENABLE_PMI;
if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
bits |= INTEL_FIXED_0_USER;
if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
bits |= INTEL_FIXED_0_KERNEL;
/*
* ANY bit is supported in v3 and up
*/
if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
bits |= INTEL_FIXED_0_ANYTHREAD;
idx -= INTEL_PMC_IDX_FIXED;
bits = intel_fixed_bits_by_idx(idx, bits);
mask = intel_fixed_bits_by_idx(idx, INTEL_FIXED_BITS_MASK);
if (x86_pmu.intel_cap.pebs_baseline && event->attr.precise_ip) {
bits |= intel_fixed_bits_by_idx(idx, ICL_FIXED_0_ADAPTIVE);
mask |= intel_fixed_bits_by_idx(idx, ICL_FIXED_0_ADAPTIVE);
}
cpuc->fixed_ctrl_val &= ~mask;
cpuc->fixed_ctrl_val |= bits;
}
static void intel_pmu_enable_event(struct perf_event *event)
{
u64 enable_mask = ARCH_PERFMON_EVENTSEL_ENABLE;
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
if (unlikely(event->attr.precise_ip))
intel_pmu_pebs_enable(event);
switch (idx) {
case 0 ... INTEL_PMC_IDX_FIXED - 1:
if (branch_sample_counters(event))
enable_mask |= ARCH_PERFMON_EVENTSEL_BR_CNTR;
intel_set_masks(event, idx);
__x86_pmu_enable_event(hwc, enable_mask);
break;
case INTEL_PMC_IDX_FIXED ... INTEL_PMC_IDX_FIXED_BTS - 1:
case INTEL_PMC_IDX_METRIC_BASE ... INTEL_PMC_IDX_METRIC_END:
intel_pmu_enable_fixed(event);
break;
case INTEL_PMC_IDX_FIXED_BTS:
if (!__this_cpu_read(cpu_hw_events.enabled))
return;
intel_pmu_enable_bts(hwc->config);
break;
case INTEL_PMC_IDX_FIXED_VLBR:
intel_set_masks(event, idx);
break;
default:
pr_warn("Failed to enable the event with invalid index %d\n",
idx);
}
}
static void intel_pmu_add_event(struct perf_event *event)
{
if (event->attr.precise_ip)
intel_pmu_pebs_add(event);
if (intel_pmu_needs_branch_stack(event))
intel_pmu_lbr_add(event);
}
/*
* Save and restart an expired event. Called by NMI contexts,
* so it has to be careful about preempting normal event ops:
*/
int intel_pmu_save_and_restart(struct perf_event *event)
{
static_call(x86_pmu_update)(event);
/*
* For a checkpointed counter always reset back to 0. This
* avoids a situation where the counter overflows, aborts the
* transaction and is then set back to shortly before the
* overflow, and overflows and aborts again.
*/
if (unlikely(event_is_checkpointed(event))) {
/* No race with NMIs because the counter should not be armed */
wrmsrl(event->hw.event_base, 0);
local64_set(&event->hw.prev_count, 0);
}
return static_call(x86_pmu_set_period)(event);
}
static int intel_pmu_set_period(struct perf_event *event)
{
if (unlikely(is_topdown_count(event)))
return static_call(intel_pmu_set_topdown_event_period)(event);
return x86_perf_event_set_period(event);
}
static u64 intel_pmu_update(struct perf_event *event)
{
if (unlikely(is_topdown_count(event)))
return static_call(intel_pmu_update_topdown_event)(event);
return x86_perf_event_update(event);
}
static void intel_pmu_reset(void)
{
struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
unsigned long *cntr_mask = hybrid(cpuc->pmu, cntr_mask);
unsigned long *fixed_cntr_mask = hybrid(cpuc->pmu, fixed_cntr_mask);
unsigned long flags;
int idx;
if (!*(u64 *)cntr_mask)
return;
local_irq_save(flags);
pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
for_each_set_bit(idx, cntr_mask, INTEL_PMC_MAX_GENERIC) {
wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
wrmsrl_safe(x86_pmu_event_addr(idx), 0ull);
}
for_each_set_bit(idx, fixed_cntr_mask, INTEL_PMC_MAX_FIXED) {
if (fixed_counter_disabled(idx, cpuc->pmu))
continue;
wrmsrl_safe(x86_pmu_fixed_ctr_addr(idx), 0ull);
}
if (ds)
ds->bts_index = ds->bts_buffer_base;
/* Ack all overflows and disable fixed counters */
if (x86_pmu.version >= 2) {
intel_pmu_ack_status(intel_pmu_get_status());
wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
}
/* Reset LBRs and LBR freezing */
if (x86_pmu.lbr_nr) {
update_debugctlmsr(get_debugctlmsr() &
~(DEBUGCTLMSR_FREEZE_LBRS_ON_PMI|DEBUGCTLMSR_LBR));
}
local_irq_restore(flags);
}
/*
* We may be running with guest PEBS events created by KVM, and the
* PEBS records are logged into the guest's DS and invisible to host.
*
* In the case of guest PEBS overflow, we only trigger a fake event
* to emulate the PEBS overflow PMI for guest PEBS counters in KVM.
* The guest will then vm-entry and check the guest DS area to read
* the guest PEBS records.
*
* The contents and other behavior of the guest event do not matter.
*/
static void x86_pmu_handle_guest_pebs(struct pt_regs *regs,
struct perf_sample_data *data)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
u64 guest_pebs_idxs = cpuc->pebs_enabled & ~cpuc->intel_ctrl_host_mask;
struct perf_event *event = NULL;
int bit;
if (!unlikely(perf_guest_state()))
return;
if (!x86_pmu.pebs_ept || !x86_pmu.pebs_active ||
!guest_pebs_idxs)
return;
for_each_set_bit(bit, (unsigned long *)&guest_pebs_idxs, X86_PMC_IDX_MAX) {
event = cpuc->events[bit];
if (!event->attr.precise_ip)
continue;
perf_sample_data_init(data, 0, event->hw.last_period);
if (perf_event_overflow(event, data, regs))
x86_pmu_stop(event, 0);
/* Inject one fake event is enough. */
break;
}
}
static int handle_pmi_common(struct pt_regs *regs, u64 status)
{
struct perf_sample_data data;
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
int bit;
int handled = 0;
u64 intel_ctrl = hybrid(cpuc->pmu, intel_ctrl);
inc_irq_stat(apic_perf_irqs);
/*
* Ignore a range of extra bits in status that do not indicate
* overflow by themselves.
*/
status &= ~(GLOBAL_STATUS_COND_CHG |
GLOBAL_STATUS_ASIF |
GLOBAL_STATUS_LBRS_FROZEN);
if (!status)
return 0;
/*
* In case multiple PEBS events are sampled at the same time,
* it is possible to have GLOBAL_STATUS bit 62 set indicating
* PEBS buffer overflow and also seeing at most 3 PEBS counters
* having their bits set in the status register. This is a sign
* that there was at least one PEBS record pending at the time
* of the PMU interrupt. PEBS counters must only be processed
* via the drain_pebs() calls and not via the regular sample
* processing loop coming after that the function, otherwise
* phony regular samples may be generated in the sampling buffer
* not marked with the EXACT tag. Another possibility is to have
* one PEBS event and at least one non-PEBS event which overflows
* while PEBS has armed. In this case, bit 62 of GLOBAL_STATUS will
* not be set, yet the overflow status bit for the PEBS counter will
* be on Skylake.
*
* To avoid this problem, we systematically ignore the PEBS-enabled
* counters from the GLOBAL_STATUS mask and we always process PEBS
* events via drain_pebs().
*/
status &= ~(cpuc->pebs_enabled & x86_pmu.pebs_capable);
/*
* PEBS overflow sets bit 62 in the global status register
*/
if (__test_and_clear_bit(GLOBAL_STATUS_BUFFER_OVF_BIT, (unsigned long *)&status)) {
u64 pebs_enabled = cpuc->pebs_enabled;
handled++;
x86_pmu_handle_guest_pebs(regs, &data);
x86_pmu.drain_pebs(regs, &data);
status &= intel_ctrl | GLOBAL_STATUS_TRACE_TOPAPMI;
/*
* PMI throttle may be triggered, which stops the PEBS event.
* Although cpuc->pebs_enabled is updated accordingly, the
* MSR_IA32_PEBS_ENABLE is not updated. Because the
* cpuc->enabled has been forced to 0 in PMI.
* Update the MSR if pebs_enabled is changed.
*/
if (pebs_enabled != cpuc->pebs_enabled)
wrmsrl(MSR_IA32_PEBS_ENABLE, cpuc->pebs_enabled);
}
/*
* Intel PT
*/
if (__test_and_clear_bit(GLOBAL_STATUS_TRACE_TOPAPMI_BIT, (unsigned long *)&status)) {
handled++;
if (!perf_guest_handle_intel_pt_intr())
intel_pt_interrupt();
}
/*
* Intel Perf metrics
*/
if (__test_and_clear_bit(GLOBAL_STATUS_PERF_METRICS_OVF_BIT, (unsigned long *)&status)) {
handled++;
static_call(intel_pmu_update_topdown_event)(NULL);
}
/*
* Checkpointed counters can lead to 'spurious' PMIs because the
* rollback caused by the PMI will have cleared the overflow status
* bit. Therefore always force probe these counters.
*/
status |= cpuc->intel_cp_status;
for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
struct perf_event *event = cpuc->events[bit];
handled++;
if (!test_bit(bit, cpuc->active_mask))
continue;
if (!intel_pmu_save_and_restart(event))
continue;
perf_sample_data_init(&data, 0, event->hw.last_period);
if (has_branch_stack(event))
intel_pmu_lbr_save_brstack(&data, cpuc, event);
if (perf_event_overflow(event, &data, regs))
x86_pmu_stop(event, 0);
}
return handled;
}
/*
* This handler is triggered by the local APIC, so the APIC IRQ handling
* rules apply:
*/
static int intel_pmu_handle_irq(struct pt_regs *regs)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
bool late_ack = hybrid_bit(cpuc->pmu, late_ack);
bool mid_ack = hybrid_bit(cpuc->pmu, mid_ack);
int loops;
u64 status;
int handled;
int pmu_enabled;
/*
* Save the PMU state.
* It needs to be restored when leaving the handler.
*/
pmu_enabled = cpuc->enabled;
/*
* In general, the early ACK is only applied for old platforms.
* For the big core starts from Haswell, the late ACK should be
* applied.
* For the small core after Tremont, we have to do the ACK right
* before re-enabling counters, which is in the middle of the
* NMI handler.
*/
if (!late_ack && !mid_ack)
apic_write(APIC_LVTPC, APIC_DM_NMI);
intel_bts_disable_local();
cpuc->enabled = 0;
__intel_pmu_disable_all(true);
handled = intel_pmu_drain_bts_buffer();
handled += intel_bts_interrupt();
status = intel_pmu_get_status();
if (!status)
goto done;
loops = 0;
again:
intel_pmu_lbr_read();
intel_pmu_ack_status(status);
if (++loops > 100) {
static bool warned;
if (!warned) {
WARN(1, "perfevents: irq loop stuck!\n");
perf_event_print_debug();
warned = true;
}
intel_pmu_reset();
goto done;
}
handled += handle_pmi_common(regs, status);
/*
* Repeat if there is more work to be done:
*/
status = intel_pmu_get_status();
if (status)
goto again;
done:
if (mid_ack)
apic_write(APIC_LVTPC, APIC_DM_NMI);
/* Only restore PMU state when it's active. See x86_pmu_disable(). */
cpuc->enabled = pmu_enabled;
if (pmu_enabled)
__intel_pmu_enable_all(0, true);
intel_bts_enable_local();
/*
* Only unmask the NMI after the overflow counters
* have been reset. This avoids spurious NMIs on
* Haswell CPUs.
*/
if (late_ack)
apic_write(APIC_LVTPC, APIC_DM_NMI);
return handled;
}
static struct event_constraint *
intel_bts_constraints(struct perf_event *event)
{
if (unlikely(intel_pmu_has_bts(event)))
return &bts_constraint;
return NULL;
}
/*
* Note: matches a fake event, like Fixed2.
*/
static struct event_constraint *
intel_vlbr_constraints(struct perf_event *event)
{
struct event_constraint *c = &vlbr_constraint;
if (unlikely(constraint_match(c, event->hw.config))) {
event->hw.flags |= c->flags;
return c;
}
return NULL;
}
static int intel_alt_er(struct cpu_hw_events *cpuc,
int idx, u64 config)
{
struct extra_reg *extra_regs = hybrid(cpuc->pmu, extra_regs);
int alt_idx = idx;
if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
return idx;
if (idx == EXTRA_REG_RSP_0)
alt_idx = EXTRA_REG_RSP_1;
if (idx == EXTRA_REG_RSP_1)
alt_idx = EXTRA_REG_RSP_0;
if (config & ~extra_regs[alt_idx].valid_mask)
return idx;
return alt_idx;
}
static void intel_fixup_er(struct perf_event *event, int idx)
{
struct extra_reg *extra_regs = hybrid(event->pmu, extra_regs);
event->hw.extra_reg.idx = idx;
if (idx == EXTRA_REG_RSP_0) {
event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
event->hw.config |= extra_regs[EXTRA_REG_RSP_0].event;
event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
} else if (idx == EXTRA_REG_RSP_1) {
event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
event->hw.config |= extra_regs[EXTRA_REG_RSP_1].event;
event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
}
}
/*
* manage allocation of shared extra msr for certain events
*
* sharing can be:
* per-cpu: to be shared between the various events on a single PMU
* per-core: per-cpu + shared by HT threads
*/
static struct event_constraint *
__intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
struct perf_event *event,
struct hw_perf_event_extra *reg)
{
struct event_constraint *c = &emptyconstraint;
struct er_account *era;
unsigned long flags;
int idx = reg->idx;
/*
* reg->alloc can be set due to existing state, so for fake cpuc we
* need to ignore this, otherwise we might fail to allocate proper fake
* state for this extra reg constraint. Also see the comment below.
*/
if (reg->alloc && !cpuc->is_fake)
return NULL; /* call x86_get_event_constraint() */
again:
era = &cpuc->shared_regs->regs[idx];
/*
* we use spin_lock_irqsave() to avoid lockdep issues when
* passing a fake cpuc
*/
raw_spin_lock_irqsave(&era->lock, flags);
if (!atomic_read(&era->ref) || era->config == reg->config) {
/*
* If its a fake cpuc -- as per validate_{group,event}() we
* shouldn't touch event state and we can avoid doing so
* since both will only call get_event_constraints() once
* on each event, this avoids the need for reg->alloc.
*
* Not doing the ER fixup will only result in era->reg being
* wrong, but since we won't actually try and program hardware
* this isn't a problem either.
*/
if (!cpuc->is_fake) {
if (idx != reg->idx)
intel_fixup_er(event, idx);
/*
* x86_schedule_events() can call get_event_constraints()
* multiple times on events in the case of incremental
* scheduling(). reg->alloc ensures we only do the ER
* allocation once.
*/
reg->alloc = 1;
}
/* lock in msr value */
era->config = reg->config;
era->reg = reg->reg;
/* one more user */
atomic_inc(&era->ref);
/*
* need to call x86_get_event_constraint()
* to check if associated event has constraints
*/
c = NULL;
} else {
idx = intel_alt_er(cpuc, idx, reg->config);
if (idx != reg->idx) {
raw_spin_unlock_irqrestore(&era->lock, flags);
goto again;
}
}
raw_spin_unlock_irqrestore(&era->lock, flags);
return c;
}
static void
__intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
struct hw_perf_event_extra *reg)
{
struct er_account *era;
/*
* Only put constraint if extra reg was actually allocated. Also takes
* care of event which do not use an extra shared reg.
*
* Also, if this is a fake cpuc we shouldn't touch any event state
* (reg->alloc) and we don't care about leaving inconsistent cpuc state
* either since it'll be thrown out.
*/
if (!reg->alloc || cpuc->is_fake)
return;
era = &cpuc->shared_regs->regs[reg->idx];
/* one fewer user */
atomic_dec(&era->ref);
/* allocate again next time */
reg->alloc = 0;
}
static struct event_constraint *
intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
struct perf_event *event)
{
struct event_constraint *c = NULL, *d;
struct hw_perf_event_extra *xreg, *breg;
xreg = &event->hw.extra_reg;
if (xreg->idx != EXTRA_REG_NONE) {
c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
if (c == &emptyconstraint)
return c;
}
breg = &event->hw.branch_reg;
if (breg->idx != EXTRA_REG_NONE) {
d = __intel_shared_reg_get_constraints(cpuc, event, breg);
if (d == &emptyconstraint) {
__intel_shared_reg_put_constraints(cpuc, xreg);
c = d;
}
}
return c;
}
struct event_constraint *
x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *event_constraints = hybrid(cpuc->pmu, event_constraints);
struct event_constraint *c;
if (event_constraints) {
for_each_event_constraint(c, event_constraints) {
if (constraint_match(c, event->hw.config)) {
event->hw.flags |= c->flags;
return c;
}
}
}
return &hybrid_var(cpuc->pmu, unconstrained);
}
static struct event_constraint *
__intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = intel_vlbr_constraints(event);
if (c)
return c;
c = intel_bts_constraints(event);
if (c)
return c;
c = intel_shared_regs_constraints(cpuc, event);
if (c)
return c;
c = intel_pebs_constraints(event);
if (c)
return c;
return x86_get_event_constraints(cpuc, idx, event);
}
static void
intel_start_scheduling(struct cpu_hw_events *cpuc)
{
struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
struct intel_excl_states *xl;
int tid = cpuc->excl_thread_id;
/*
* nothing needed if in group validation mode
*/
if (cpuc->is_fake || !is_ht_workaround_enabled())
return;
/*
* no exclusion needed
*/
if (WARN_ON_ONCE(!excl_cntrs))
return;
xl = &excl_cntrs->states[tid];
xl->sched_started = true;
/*
* lock shared state until we are done scheduling
* in stop_event_scheduling()
* makes scheduling appear as a transaction
*/
raw_spin_lock(&excl_cntrs->lock);
}
static void intel_commit_scheduling(struct cpu_hw_events *cpuc, int idx, int cntr)
{
struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
struct event_constraint *c = cpuc->event_constraint[idx];
struct intel_excl_states *xl;
int tid = cpuc->excl_thread_id;
if (cpuc->is_fake || !is_ht_workaround_enabled())
return;
if (WARN_ON_ONCE(!excl_cntrs))
return;
if (!(c->flags & PERF_X86_EVENT_DYNAMIC))
return;
xl = &excl_cntrs->states[tid];
lockdep_assert_held(&excl_cntrs->lock);
if (c->flags & PERF_X86_EVENT_EXCL)
xl->state[cntr] = INTEL_EXCL_EXCLUSIVE;
else
xl->state[cntr] = INTEL_EXCL_SHARED;
}
static void
intel_stop_scheduling(struct cpu_hw_events *cpuc)
{
struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
struct intel_excl_states *xl;
int tid = cpuc->excl_thread_id;
/*
* nothing needed if in group validation mode
*/
if (cpuc->is_fake || !is_ht_workaround_enabled())
return;
/*
* no exclusion needed
*/
if (WARN_ON_ONCE(!excl_cntrs))
return;
xl = &excl_cntrs->states[tid];
xl->sched_started = false;
/*
* release shared state lock (acquired in intel_start_scheduling())
*/
raw_spin_unlock(&excl_cntrs->lock);
}
static struct event_constraint *
dyn_constraint(struct cpu_hw_events *cpuc, struct event_constraint *c, int idx)
{
WARN_ON_ONCE(!cpuc->constraint_list);
if (!(c->flags & PERF_X86_EVENT_DYNAMIC)) {
struct event_constraint *cx;
/*
* grab pre-allocated constraint entry
*/
cx = &cpuc->constraint_list[idx];
/*
* initialize dynamic constraint
* with static constraint
*/
*cx = *c;
/*
* mark constraint as dynamic
*/
cx->flags |= PERF_X86_EVENT_DYNAMIC;
c = cx;
}
return c;
}
static struct event_constraint *
intel_get_excl_constraints(struct cpu_hw_events *cpuc, struct perf_event *event,
int idx, struct event_constraint *c)
{
struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
struct intel_excl_states *xlo;
int tid = cpuc->excl_thread_id;
int is_excl, i, w;
/*
* validating a group does not require
* enforcing cross-thread exclusion
*/
if (cpuc->is_fake || !is_ht_workaround_enabled())
return c;
/*
* no exclusion needed
*/
if (WARN_ON_ONCE(!excl_cntrs))
return c;
/*
* because we modify the constraint, we need
* to make a copy. Static constraints come
* from static const tables.
*
* only needed when constraint has not yet
* been cloned (marked dynamic)
*/
c = dyn_constraint(cpuc, c, idx);
/*
* From here on, the constraint is dynamic.
* Either it was just allocated above, or it
* was allocated during a earlier invocation
* of this function
*/
/*
* state of sibling HT
*/
xlo = &excl_cntrs->states[tid ^ 1];
/*
* event requires exclusive counter access
* across HT threads
*/
is_excl = c->flags & PERF_X86_EVENT_EXCL;
if (is_excl && !(event->hw.flags & PERF_X86_EVENT_EXCL_ACCT)) {
event->hw.flags |= PERF_X86_EVENT_EXCL_ACCT;
if (!cpuc->n_excl++)
WRITE_ONCE(excl_cntrs->has_exclusive[tid], 1);
}
/*
* Modify static constraint with current dynamic
* state of thread
*
* EXCLUSIVE: sibling counter measuring exclusive event
* SHARED : sibling counter measuring non-exclusive event
* UNUSED : sibling counter unused
*/
w = c->weight;
for_each_set_bit(i, c->idxmsk, X86_PMC_IDX_MAX) {
/*
* exclusive event in sibling counter
* our corresponding counter cannot be used
* regardless of our event
*/
if (xlo->state[i] == INTEL_EXCL_EXCLUSIVE) {
__clear_bit(i, c->idxmsk);
w--;
continue;
}
/*
* if measuring an exclusive event, sibling
* measuring non-exclusive, then counter cannot
* be used
*/
if (is_excl && xlo->state[i] == INTEL_EXCL_SHARED) {
__clear_bit(i, c->idxmsk);
w--;
continue;
}
}
/*
* if we return an empty mask, then switch
* back to static empty constraint to avoid
* the cost of freeing later on
*/
if (!w)
c = &emptyconstraint;
c->weight = w;
return c;
}
static struct event_constraint *
intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c1, *c2;
c1 = cpuc->event_constraint[idx];
/*
* first time only
* - static constraint: no change across incremental scheduling calls
* - dynamic constraint: handled by intel_get_excl_constraints()
*/
c2 = __intel_get_event_constraints(cpuc, idx, event);
if (c1) {
WARN_ON_ONCE(!(c1->flags & PERF_X86_EVENT_DYNAMIC));
bitmap_copy(c1->idxmsk, c2->idxmsk, X86_PMC_IDX_MAX);
c1->weight = c2->weight;
c2 = c1;
}
if (cpuc->excl_cntrs)
return intel_get_excl_constraints(cpuc, event, idx, c2);
/* Not all counters support the branch counter feature. */
if (branch_sample_counters(event)) {
c2 = dyn_constraint(cpuc, c2, idx);
c2->idxmsk64 &= x86_pmu.lbr_counters;
c2->weight = hweight64(c2->idxmsk64);
}
return c2;
}
static void intel_put_excl_constraints(struct cpu_hw_events *cpuc,
struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
int tid = cpuc->excl_thread_id;
struct intel_excl_states *xl;
/*
* nothing needed if in group validation mode
*/
if (cpuc->is_fake)
return;
if (WARN_ON_ONCE(!excl_cntrs))
return;
if (hwc->flags & PERF_X86_EVENT_EXCL_ACCT) {
hwc->flags &= ~PERF_X86_EVENT_EXCL_ACCT;
if (!--cpuc->n_excl)
WRITE_ONCE(excl_cntrs->has_exclusive[tid], 0);
}
/*
* If event was actually assigned, then mark the counter state as
* unused now.
*/
if (hwc->idx >= 0) {
xl = &excl_cntrs->states[tid];
/*
* put_constraint may be called from x86_schedule_events()
* which already has the lock held so here make locking
* conditional.
*/
if (!xl->sched_started)
raw_spin_lock(&excl_cntrs->lock);
xl->state[hwc->idx] = INTEL_EXCL_UNUSED;
if (!xl->sched_started)
raw_spin_unlock(&excl_cntrs->lock);
}
}
static void
intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
struct perf_event *event)
{
struct hw_perf_event_extra *reg;
reg = &event->hw.extra_reg;
if (reg->idx != EXTRA_REG_NONE)
__intel_shared_reg_put_constraints(cpuc, reg);
reg = &event->hw.branch_reg;
if (reg->idx != EXTRA_REG_NONE)
__intel_shared_reg_put_constraints(cpuc, reg);
}
static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
struct perf_event *event)
{
intel_put_shared_regs_event_constraints(cpuc, event);
/*
* is PMU has exclusive counter restrictions, then
* all events are subject to and must call the
* put_excl_constraints() routine
*/
if (cpuc->excl_cntrs)
intel_put_excl_constraints(cpuc, event);
}
static void intel_pebs_aliases_core2(struct perf_event *event)
{
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
*
* The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
* PEBS capable. However we can use INST_RETIRED.ANY_P
* (0x00c0), which is a PEBS capable event, to get the same
* count.
*
* INST_RETIRED.ANY_P counts the number of cycles that retires
* CNTMASK instructions. By setting CNTMASK to a value (16)
* larger than the maximum number of instructions that can be
* retired per cycle (4) and then inverting the condition, we
* count all cycles that retire 16 or less instructions, which
* is every cycle.
*
* Thereby we gain a PEBS capable cycle counter.
*/
u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static void intel_pebs_aliases_snb(struct perf_event *event)
{
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
*
* The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
* PEBS capable. However we can use UOPS_RETIRED.ALL
* (0x01c2), which is a PEBS capable event, to get the same
* count.
*
* UOPS_RETIRED.ALL counts the number of cycles that retires
* CNTMASK micro-ops. By setting CNTMASK to a value (16)
* larger than the maximum number of micro-ops that can be
* retired per cycle (4) and then inverting the condition, we
* count all cycles that retire 16 or less micro-ops, which
* is every cycle.
*
* Thereby we gain a PEBS capable cycle counter.
*/
u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static void intel_pebs_aliases_precdist(struct perf_event *event)
{
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
*
* The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
* PEBS capable. However we can use INST_RETIRED.PREC_DIST
* (0x01c0), which is a PEBS capable event, to get the same
* count.
*
* The PREC_DIST event has special support to minimize sample
* shadowing effects. One drawback is that it can be
* only programmed on counter 1, but that seems like an
* acceptable trade off.
*/
u64 alt_config = X86_CONFIG(.event=0xc0, .umask=0x01, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static void intel_pebs_aliases_ivb(struct perf_event *event)
{
if (event->attr.precise_ip < 3)
return intel_pebs_aliases_snb(event);
return intel_pebs_aliases_precdist(event);
}
static void intel_pebs_aliases_skl(struct perf_event *event)
{
if (event->attr.precise_ip < 3)
return intel_pebs_aliases_core2(event);
return intel_pebs_aliases_precdist(event);
}
static unsigned long intel_pmu_large_pebs_flags(struct perf_event *event)
{
unsigned long flags = x86_pmu.large_pebs_flags;
if (event->attr.use_clockid)
flags &= ~PERF_SAMPLE_TIME;
if (!event->attr.exclude_kernel)
flags &= ~PERF_SAMPLE_REGS_USER;
if (event->attr.sample_regs_user & ~PEBS_GP_REGS)
flags &= ~(PERF_SAMPLE_REGS_USER | PERF_SAMPLE_REGS_INTR);
return flags;
}
static int intel_pmu_bts_config(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
if (unlikely(intel_pmu_has_bts(event))) {
/* BTS is not supported by this architecture. */
if (!x86_pmu.bts_active)
return -EOPNOTSUPP;
/* BTS is currently only allowed for user-mode. */
if (!attr->exclude_kernel)
return -EOPNOTSUPP;
/* BTS is not allowed for precise events. */
if (attr->precise_ip)
return -EOPNOTSUPP;
/* disallow bts if conflicting events are present */
if (x86_add_exclusive(x86_lbr_exclusive_lbr))
return -EBUSY;
event->destroy = hw_perf_lbr_event_destroy;
}
return 0;
}
static int core_pmu_hw_config(struct perf_event *event)
{
int ret = x86_pmu_hw_config(event);
if (ret)
return ret;
return intel_pmu_bts_config(event);
}
#define INTEL_TD_METRIC_AVAILABLE_MAX (INTEL_TD_METRIC_RETIRING + \
((x86_pmu.num_topdown_events - 1) << 8))
static bool is_available_metric_event(struct perf_event *event)
{
return is_metric_event(event) &&
event->attr.config <= INTEL_TD_METRIC_AVAILABLE_MAX;
}
static inline bool is_mem_loads_event(struct perf_event *event)
{
return (event->attr.config & INTEL_ARCH_EVENT_MASK) == X86_CONFIG(.event=0xcd, .umask=0x01);
}
static inline bool is_mem_loads_aux_event(struct perf_event *event)
{
return (event->attr.config & INTEL_ARCH_EVENT_MASK) == X86_CONFIG(.event=0x03, .umask=0x82);
}
static inline bool require_mem_loads_aux_event(struct perf_event *event)
{
if (!(x86_pmu.flags & PMU_FL_MEM_LOADS_AUX))
return false;
if (is_hybrid())
return hybrid_pmu(event->pmu)->pmu_type == hybrid_big;
return true;
}
static inline bool intel_pmu_has_cap(struct perf_event *event, int idx)
{
union perf_capabilities *intel_cap = &hybrid(event->pmu, intel_cap);
return test_bit(idx, (unsigned long *)&intel_cap->capabilities);
}
static int intel_pmu_hw_config(struct perf_event *event)
{
int ret = x86_pmu_hw_config(event);
if (ret)
return ret;
ret = intel_pmu_bts_config(event);
if (ret)
return ret;
if (event->attr.precise_ip) {
if ((event->attr.config & INTEL_ARCH_EVENT_MASK) == INTEL_FIXED_VLBR_EVENT)
return -EINVAL;
if (!(event->attr.freq || (event->attr.wakeup_events && !event->attr.watermark))) {
event->hw.flags |= PERF_X86_EVENT_AUTO_RELOAD;
if (!(event->attr.sample_type &
~intel_pmu_large_pebs_flags(event))) {
event->hw.flags |= PERF_X86_EVENT_LARGE_PEBS;
event->attach_state |= PERF_ATTACH_SCHED_CB;
}
}
if (x86_pmu.pebs_aliases)
x86_pmu.pebs_aliases(event);
}
if (needs_branch_stack(event)) {
/* Avoid branch stack setup for counting events in SAMPLE READ */
if (is_sampling_event(event) ||
!(event->attr.sample_type & PERF_SAMPLE_READ))
event->hw.flags |= PERF_X86_EVENT_NEEDS_BRANCH_STACK;
}
if (branch_sample_counters(event)) {
struct perf_event *leader, *sibling;
int num = 0;
if (!(x86_pmu.flags & PMU_FL_BR_CNTR) ||
(event->attr.config & ~INTEL_ARCH_EVENT_MASK))
return -EINVAL;
/*
* The branch counter logging is not supported in the call stack
* mode yet, since we cannot simply flush the LBR during e.g.,
* multiplexing. Also, there is no obvious usage with the call
* stack mode. Simply forbids it for now.
*
* If any events in the group enable the branch counter logging
* feature, the group is treated as a branch counter logging
* group, which requires the extra space to store the counters.
*/
leader = event->group_leader;
if (branch_sample_call_stack(leader))
return -EINVAL;
if (branch_sample_counters(leader))
num++;
leader->hw.flags |= PERF_X86_EVENT_BRANCH_COUNTERS;
for_each_sibling_event(sibling, leader) {
if (branch_sample_call_stack(sibling))
return -EINVAL;
if (branch_sample_counters(sibling))
num++;
}
if (num > fls(x86_pmu.lbr_counters))
return -EINVAL;
/*
* Only applying the PERF_SAMPLE_BRANCH_COUNTERS doesn't
* require any branch stack setup.
* Clear the bit to avoid unnecessary branch stack setup.
*/
if (0 == (event->attr.branch_sample_type &
~(PERF_SAMPLE_BRANCH_PLM_ALL |
PERF_SAMPLE_BRANCH_COUNTERS)))
event->hw.flags &= ~PERF_X86_EVENT_NEEDS_BRANCH_STACK;
/*
* Force the leader to be a LBR event. So LBRs can be reset
* with the leader event. See intel_pmu_lbr_del() for details.
*/
if (!intel_pmu_needs_branch_stack(leader))
return -EINVAL;
}
if (intel_pmu_needs_branch_stack(event)) {
ret = intel_pmu_setup_lbr_filter(event);
if (ret)
return ret;
event->attach_state |= PERF_ATTACH_SCHED_CB;
/*
* BTS is set up earlier in this path, so don't account twice
*/
if (!unlikely(intel_pmu_has_bts(event))) {
/* disallow lbr if conflicting events are present */
if (x86_add_exclusive(x86_lbr_exclusive_lbr))
return -EBUSY;
event->destroy = hw_perf_lbr_event_destroy;
}
}
if (event->attr.aux_output) {
if (!event->attr.precise_ip)
return -EINVAL;
event->hw.flags |= PERF_X86_EVENT_PEBS_VIA_PT;
}
if ((event->attr.type == PERF_TYPE_HARDWARE) ||
(event->attr.type == PERF_TYPE_HW_CACHE))
return 0;
/*
* Config Topdown slots and metric events
*
* The slots event on Fixed Counter 3 can support sampling,
* which will be handled normally in x86_perf_event_update().
*
* Metric events don't support sampling and require being paired
* with a slots event as group leader. When the slots event
* is used in a metrics group, it too cannot support sampling.
*/
if (intel_pmu_has_cap(event, PERF_CAP_METRICS_IDX) && is_topdown_event(event)) {
if (event->attr.config1 || event->attr.config2)
return -EINVAL;
/*
* The TopDown metrics events and slots event don't
* support any filters.
*/
if (event->attr.config & X86_ALL_EVENT_FLAGS)
return -EINVAL;
if (is_available_metric_event(event)) {
struct perf_event *leader = event->group_leader;
/* The metric events don't support sampling. */
if (is_sampling_event(event))
return -EINVAL;
/* The metric events require a slots group leader. */
if (!is_slots_event(leader))
return -EINVAL;
/*
* The leader/SLOTS must not be a sampling event for
* metric use; hardware requires it starts at 0 when used
* in conjunction with MSR_PERF_METRICS.
*/
if (is_sampling_event(leader))
return -EINVAL;
event->event_caps |= PERF_EV_CAP_SIBLING;
/*
* Only once we have a METRICs sibling do we
* need TopDown magic.
*/
leader->hw.flags |= PERF_X86_EVENT_TOPDOWN;
event->hw.flags |= PERF_X86_EVENT_TOPDOWN;
}
}
/*
* The load latency event X86_CONFIG(.event=0xcd, .umask=0x01) on SPR
* doesn't function quite right. As a work-around it needs to always be
* co-scheduled with a auxiliary event X86_CONFIG(.event=0x03, .umask=0x82).
* The actual count of this second event is irrelevant it just needs
* to be active to make the first event function correctly.
*
* In a group, the auxiliary event must be in front of the load latency
* event. The rule is to simplify the implementation of the check.
* That's because perf cannot have a complete group at the moment.
*/
if (require_mem_loads_aux_event(event) &&
(event->attr.sample_type & PERF_SAMPLE_DATA_SRC) &&
is_mem_loads_event(event)) {
struct perf_event *leader = event->group_leader;
struct perf_event *sibling = NULL;
/*
* When this memload event is also the first event (no group
* exists yet), then there is no aux event before it.
*/
if (leader == event)
return -ENODATA;
if (!is_mem_loads_aux_event(leader)) {
for_each_sibling_event(sibling, leader) {
if (is_mem_loads_aux_event(sibling))
break;
}
if (list_entry_is_head(sibling, &leader->sibling_list, sibling_list))
return -ENODATA;
}
}
if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
return 0;
if (x86_pmu.version < 3)
return -EINVAL;
ret = perf_allow_cpu(&event->attr);
if (ret)
return ret;
event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
return 0;
}
/*
* Currently, the only caller of this function is the atomic_switch_perf_msrs().
* The host perf context helps to prepare the values of the real hardware for
* a set of msrs that need to be switched atomically in a vmx transaction.
*
* For example, the pseudocode needed to add a new msr should look like:
*
* arr[(*nr)++] = (struct perf_guest_switch_msr){
* .msr = the hardware msr address,
* .host = the value the hardware has when it doesn't run a guest,
* .guest = the value the hardware has when it runs a guest,
* };
*
* These values have nothing to do with the emulated values the guest sees
* when it uses {RD,WR}MSR, which should be handled by the KVM context,
* specifically in the intel_pmu_{get,set}_msr().
*/
static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr, void *data)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
struct kvm_pmu *kvm_pmu = (struct kvm_pmu *)data;
u64 intel_ctrl = hybrid(cpuc->pmu, intel_ctrl);
u64 pebs_mask = cpuc->pebs_enabled & x86_pmu.pebs_capable;
int global_ctrl, pebs_enable;
/*
* In addition to obeying exclude_guest/exclude_host, remove bits being
* used for PEBS when running a guest, because PEBS writes to virtual
* addresses (not physical addresses).
*/
*nr = 0;
global_ctrl = (*nr)++;
arr[global_ctrl] = (struct perf_guest_switch_msr){
.msr = MSR_CORE_PERF_GLOBAL_CTRL,
.host = intel_ctrl & ~cpuc->intel_ctrl_guest_mask,
.guest = intel_ctrl & ~cpuc->intel_ctrl_host_mask & ~pebs_mask,
};
if (!x86_pmu.pebs)
return arr;
/*
* If PMU counter has PEBS enabled it is not enough to
* disable counter on a guest entry since PEBS memory
* write can overshoot guest entry and corrupt guest
* memory. Disabling PEBS solves the problem.
*
* Don't do this if the CPU already enforces it.
*/
if (x86_pmu.pebs_no_isolation) {
arr[(*nr)++] = (struct perf_guest_switch_msr){
.msr = MSR_IA32_PEBS_ENABLE,
.host = cpuc->pebs_enabled,
.guest = 0,
};
return arr;
}
if (!kvm_pmu || !x86_pmu.pebs_ept)
return arr;
arr[(*nr)++] = (struct perf_guest_switch_msr){
.msr = MSR_IA32_DS_AREA,
.host = (unsigned long)cpuc->ds,
.guest = kvm_pmu->ds_area,
};
if (x86_pmu.intel_cap.pebs_baseline) {
arr[(*nr)++] = (struct perf_guest_switch_msr){
.msr = MSR_PEBS_DATA_CFG,
.host = cpuc->active_pebs_data_cfg,
.guest = kvm_pmu->pebs_data_cfg,
};
}
pebs_enable = (*nr)++;
arr[pebs_enable] = (struct perf_guest_switch_msr){
.msr = MSR_IA32_PEBS_ENABLE,
.host = cpuc->pebs_enabled & ~cpuc->intel_ctrl_guest_mask,
.guest = pebs_mask & ~cpuc->intel_ctrl_host_mask,
};
if (arr[pebs_enable].host) {
/* Disable guest PEBS if host PEBS is enabled. */
arr[pebs_enable].guest = 0;
} else {
/* Disable guest PEBS thoroughly for cross-mapped PEBS counters. */
arr[pebs_enable].guest &= ~kvm_pmu->host_cross_mapped_mask;
arr[global_ctrl].guest &= ~kvm_pmu->host_cross_mapped_mask;
/* Set hw GLOBAL_CTRL bits for PEBS counter when it runs for guest */
arr[global_ctrl].guest |= arr[pebs_enable].guest;
}
return arr;
}
static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr, void *data)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
int idx;
for_each_set_bit(idx, x86_pmu.cntr_mask, X86_PMC_IDX_MAX) {
struct perf_event *event = cpuc->events[idx];
arr[idx].msr = x86_pmu_config_addr(idx);
arr[idx].host = arr[idx].guest = 0;
if (!test_bit(idx, cpuc->active_mask))
continue;
arr[idx].host = arr[idx].guest =
event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;
if (event->attr.exclude_host)
arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
else if (event->attr.exclude_guest)
arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
}
*nr = x86_pmu_max_num_counters(cpuc->pmu);
return arr;
}
static void core_pmu_enable_event(struct perf_event *event)
{
if (!event->attr.exclude_host)
x86_pmu_enable_event(event);
}
static void core_pmu_enable_all(int added)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
int idx;
for_each_set_bit(idx, x86_pmu.cntr_mask, X86_PMC_IDX_MAX) {
struct hw_perf_event *hwc = &cpuc->events[idx]->hw;
if (!test_bit(idx, cpuc->active_mask) ||
cpuc->events[idx]->attr.exclude_host)
continue;
__x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
}
}
static int hsw_hw_config(struct perf_event *event)
{
int ret = intel_pmu_hw_config(event);
if (ret)
return ret;
if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
return 0;
event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);
/*
* IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
* PEBS or in ANY thread mode. Since the results are non-sensical forbid
* this combination.
*/
if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
event->attr.precise_ip > 0))
return -EOPNOTSUPP;
if (event_is_checkpointed(event)) {
/*
* Sampling of checkpointed events can cause situations where
* the CPU constantly aborts because of a overflow, which is
* then checkpointed back and ignored. Forbid checkpointing
* for sampling.
*
* But still allow a long sampling period, so that perf stat
* from KVM works.
*/
if (event->attr.sample_period > 0 &&
event->attr.sample_period < 0x7fffffff)
return -EOPNOTSUPP;
}
return 0;
}
static struct event_constraint counter0_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0x1);
static struct event_constraint counter1_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0x2);
static struct event_constraint counter0_1_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0x3);
static struct event_constraint counter2_constraint =
EVENT_CONSTRAINT(0, 0x4, 0);
static struct event_constraint fixed0_constraint =
FIXED_EVENT_CONSTRAINT(0x00c0, 0);
static struct event_constraint fixed0_counter0_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0x100000001ULL);
static struct event_constraint fixed0_counter0_1_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0x100000003ULL);
static struct event_constraint counters_1_7_constraint =
INTEL_ALL_EVENT_CONSTRAINT(0, 0xfeULL);
static struct event_constraint *
hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = intel_get_event_constraints(cpuc, idx, event);
/* Handle special quirk on in_tx_checkpointed only in counter 2 */
if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
if (c->idxmsk64 & (1U << 2))
return &counter2_constraint;
return &emptyconstraint;
}
return c;
}
static struct event_constraint *
icl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
/*
* Fixed counter 0 has less skid.
* Force instruction:ppp in Fixed counter 0
*/
if ((event->attr.precise_ip == 3) &&
constraint_match(&fixed0_constraint, event->hw.config))
return &fixed0_constraint;
return hsw_get_event_constraints(cpuc, idx, event);
}
static struct event_constraint *
glc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = icl_get_event_constraints(cpuc, idx, event);
/*
* The :ppp indicates the Precise Distribution (PDist) facility, which
* is only supported on the GP counter 0. If a :ppp event which is not
* available on the GP counter 0, error out.
* Exception: Instruction PDIR is only available on the fixed counter 0.
*/
if ((event->attr.precise_ip == 3) &&
!constraint_match(&fixed0_constraint, event->hw.config)) {
if (c->idxmsk64 & BIT_ULL(0))
return &counter0_constraint;
return &emptyconstraint;
}
return c;
}
static struct event_constraint *
glp_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
/* :ppp means to do reduced skid PEBS which is PMC0 only. */
if (event->attr.precise_ip == 3)
return &counter0_constraint;
c = intel_get_event_constraints(cpuc, idx, event);
return c;
}
static struct event_constraint *
tnt_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = intel_get_event_constraints(cpuc, idx, event);
/*
* :ppp means to do reduced skid PEBS,
* which is available on PMC0 and fixed counter 0.
*/
if (event->attr.precise_ip == 3) {
/* Force instruction:ppp on PMC0 and Fixed counter 0 */
if (constraint_match(&fixed0_constraint, event->hw.config))
return &fixed0_counter0_constraint;
return &counter0_constraint;
}
return c;
}
static bool allow_tsx_force_abort = true;
static struct event_constraint *
tfa_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c = hsw_get_event_constraints(cpuc, idx, event);
/*
* Without TFA we must not use PMC3.
*/
if (!allow_tsx_force_abort && test_bit(3, c->idxmsk)) {
c = dyn_constraint(cpuc, c, idx);
c->idxmsk64 &= ~(1ULL << 3);
c->weight--;
}
return c;
}
static struct event_constraint *
adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
if (pmu->pmu_type == hybrid_big)
return glc_get_event_constraints(cpuc, idx, event);
else if (pmu->pmu_type == hybrid_small)
return tnt_get_event_constraints(cpuc, idx, event);
WARN_ON(1);
return &emptyconstraint;
}
static struct event_constraint *
cmt_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = intel_get_event_constraints(cpuc, idx, event);
/*
* The :ppp indicates the Precise Distribution (PDist) facility, which
* is only supported on the GP counter 0 & 1 and Fixed counter 0.
* If a :ppp event which is not available on the above eligible counters,
* error out.
*/
if (event->attr.precise_ip == 3) {
/* Force instruction:ppp on PMC0, 1 and Fixed counter 0 */
if (constraint_match(&fixed0_constraint, event->hw.config)) {
/* The fixed counter 0 doesn't support LBR event logging. */
if (branch_sample_counters(event))
return &counter0_1_constraint;
else
return &fixed0_counter0_1_constraint;
}
switch (c->idxmsk64 & 0x3ull) {
case 0x1:
return &counter0_constraint;
case 0x2:
return &counter1_constraint;
case 0x3:
return &counter0_1_constraint;
}
return &emptyconstraint;
}
return c;
}
static struct event_constraint *
rwc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct event_constraint *c;
c = glc_get_event_constraints(cpuc, idx, event);
/* The Retire Latency is not supported by the fixed counter 0. */
if (event->attr.precise_ip &&
(event->attr.sample_type & PERF_SAMPLE_WEIGHT_TYPE) &&
constraint_match(&fixed0_constraint, event->hw.config)) {
/*
* The Instruction PDIR is only available
* on the fixed counter 0. Error out for this case.
*/
if (event->attr.precise_ip == 3)
return &emptyconstraint;
return &counters_1_7_constraint;
}
return c;
}
static struct event_constraint *
mtl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
if (pmu->pmu_type == hybrid_big)
return rwc_get_event_constraints(cpuc, idx, event);
if (pmu->pmu_type == hybrid_small)
return cmt_get_event_constraints(cpuc, idx, event);
WARN_ON(1);
return &emptyconstraint;
}
static int adl_hw_config(struct perf_event *event)
{
struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
if (pmu->pmu_type == hybrid_big)
return hsw_hw_config(event);
else if (pmu->pmu_type == hybrid_small)
return intel_pmu_hw_config(event);
WARN_ON(1);
return -EOPNOTSUPP;
}
static enum hybrid_cpu_type adl_get_hybrid_cpu_type(void)
{
return HYBRID_INTEL_CORE;
}
static inline bool erratum_hsw11(struct perf_event *event)
{
return (event->hw.config & INTEL_ARCH_EVENT_MASK) ==
X86_CONFIG(.event=0xc0, .umask=0x01);
}
/*
* The HSW11 requires a period larger than 100 which is the same as the BDM11.
* A minimum period of 128 is enforced as well for the INST_RETIRED.ALL.
*
* The message 'interrupt took too long' can be observed on any counter which
* was armed with a period < 32 and two events expired in the same NMI.
* A minimum period of 32 is enforced for the rest of the events.
*/
static void hsw_limit_period(struct perf_event *event, s64 *left)
{
*left = max(*left, erratum_hsw11(event) ? 128 : 32);
}
/*
* Broadwell:
*
* The INST_RETIRED.ALL period always needs to have lowest 6 bits cleared
* (BDM55) and it must not use a period smaller than 100 (BDM11). We combine
* the two to enforce a minimum period of 128 (the smallest value that has bits
* 0-5 cleared and >= 100).
*
* Because of how the code in x86_perf_event_set_period() works, the truncation
* of the lower 6 bits is 'harmless' as we'll occasionally add a longer period
* to make up for the 'lost' events due to carrying the 'error' in period_left.
*
* Therefore the effective (average) period matches the requested period,
* despite coarser hardware granularity.
*/
static void bdw_limit_period(struct perf_event *event, s64 *left)
{
if (erratum_hsw11(event)) {
if (*left < 128)
*left = 128;
*left &= ~0x3fULL;
}
}
static void nhm_limit_period(struct perf_event *event, s64 *left)
{
*left = max(*left, 32LL);
}
static void glc_limit_period(struct perf_event *event, s64 *left)
{
if (event->attr.precise_ip == 3)
*left = max(*left, 128LL);
}
PMU_FORMAT_ATTR(event, "config:0-7" );
PMU_FORMAT_ATTR(umask, "config:8-15" );
PMU_FORMAT_ATTR(edge, "config:18" );
PMU_FORMAT_ATTR(pc, "config:19" );
PMU_FORMAT_ATTR(any, "config:21" ); /* v3 + */
PMU_FORMAT_ATTR(inv, "config:23" );
PMU_FORMAT_ATTR(cmask, "config:24-31" );
PMU_FORMAT_ATTR(in_tx, "config:32" );
PMU_FORMAT_ATTR(in_tx_cp, "config:33" );
PMU_FORMAT_ATTR(eq, "config:36" ); /* v6 + */
static ssize_t umask2_show(struct device *dev,
struct device_attribute *attr,
char *page)
{
u64 mask = hybrid(dev_get_drvdata(dev), config_mask) & ARCH_PERFMON_EVENTSEL_UMASK2;
if (mask == ARCH_PERFMON_EVENTSEL_UMASK2)
return sprintf(page, "config:8-15,40-47\n");
/* Roll back to the old format if umask2 is not supported. */
return sprintf(page, "config:8-15\n");
}
static struct device_attribute format_attr_umask2 =
__ATTR(umask, 0444, umask2_show, NULL);
static struct attribute *format_evtsel_ext_attrs[] = {
&format_attr_umask2.attr,
&format_attr_eq.attr,
NULL
};
static umode_t
evtsel_ext_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
struct device *dev = kobj_to_dev(kobj);
u64 mask;
/*
* The umask and umask2 have different formats but share the
* same attr name. In update mode, the previous value of the
* umask is unconditionally removed before is_visible. If
* umask2 format is not enumerated, it's impossible to roll
* back to the old format.
* Does the check in umask2_show rather than is_visible.
*/
if (i == 0)
return attr->mode;
mask = hybrid(dev_get_drvdata(dev), config_mask);
if (i == 1)
return (mask & ARCH_PERFMON_EVENTSEL_EQ) ? attr->mode : 0;
return 0;
}
static struct attribute *intel_arch_formats_attr[] = {
&format_attr_event.attr,
&format_attr_umask.attr,
&format_attr_edge.attr,
&format_attr_pc.attr,
&format_attr_inv.attr,
&format_attr_cmask.attr,
NULL,
};
ssize_t intel_event_sysfs_show(char *page, u64 config)
{
u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
return x86_event_sysfs_show(page, config, event);
}
static struct intel_shared_regs *allocate_shared_regs(int cpu)
{
struct intel_shared_regs *regs;
int i;
regs = kzalloc_node(sizeof(struct intel_shared_regs),
GFP_KERNEL, cpu_to_node(cpu));
if (regs) {
/*
* initialize the locks to keep lockdep happy
*/
for (i = 0; i < EXTRA_REG_MAX; i++)
raw_spin_lock_init(&regs->regs[i].lock);
regs->core_id = -1;
}
return regs;
}
static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
{
struct intel_excl_cntrs *c;
c = kzalloc_node(sizeof(struct intel_excl_cntrs),
GFP_KERNEL, cpu_to_node(cpu));
if (c) {
raw_spin_lock_init(&c->lock);
c->core_id = -1;
}
return c;
}
int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
{
cpuc->pebs_record_size = x86_pmu.pebs_record_size;
if (is_hybrid() || x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
cpuc->shared_regs = allocate_shared_regs(cpu);
if (!cpuc->shared_regs)
goto err;
}
if (x86_pmu.flags & (PMU_FL_EXCL_CNTRS | PMU_FL_TFA | PMU_FL_BR_CNTR)) {
size_t sz = X86_PMC_IDX_MAX * sizeof(struct event_constraint);
cpuc->constraint_list = kzalloc_node(sz, GFP_KERNEL, cpu_to_node(cpu));
if (!cpuc->constraint_list)
goto err_shared_regs;
}
if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
if (!cpuc->excl_cntrs)
goto err_constraint_list;
cpuc->excl_thread_id = 0;
}
return 0;
err_constraint_list:
kfree(cpuc->constraint_list);
cpuc->constraint_list = NULL;
err_shared_regs:
kfree(cpuc->shared_regs);
cpuc->shared_regs = NULL;
err:
return -ENOMEM;
}
static int intel_pmu_cpu_prepare(int cpu)
{
return intel_cpuc_prepare(&per_cpu(cpu_hw_events, cpu), cpu);
}
static void flip_smm_bit(void *data)
{
unsigned long set = *(unsigned long *)data;
if (set > 0) {
msr_set_bit(MSR_IA32_DEBUGCTLMSR,
DEBUGCTLMSR_FREEZE_IN_SMM_BIT);
} else {
msr_clear_bit(MSR_IA32_DEBUGCTLMSR,
DEBUGCTLMSR_FREEZE_IN_SMM_BIT);
}
}
static void intel_pmu_check_counters_mask(u64 *cntr_mask,
u64 *fixed_cntr_mask,
u64 *intel_ctrl)
{
unsigned int bit;
bit = fls64(*cntr_mask);
if (bit > INTEL_PMC_MAX_GENERIC) {
WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
bit, INTEL_PMC_MAX_GENERIC);
*cntr_mask &= GENMASK_ULL(INTEL_PMC_MAX_GENERIC - 1, 0);
}
*intel_ctrl = *cntr_mask;
bit = fls64(*fixed_cntr_mask);
if (bit > INTEL_PMC_MAX_FIXED) {
WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
bit, INTEL_PMC_MAX_FIXED);
*fixed_cntr_mask &= GENMASK_ULL(INTEL_PMC_MAX_FIXED - 1, 0);
}
*intel_ctrl |= *fixed_cntr_mask << INTEL_PMC_IDX_FIXED;
}
static void intel_pmu_check_event_constraints(struct event_constraint *event_constraints,
u64 cntr_mask,
u64 fixed_cntr_mask,
u64 intel_ctrl);
static void intel_pmu_check_extra_regs(struct extra_reg *extra_regs);
static inline bool intel_pmu_broken_perf_cap(void)
{
/* The Perf Metric (Bit 15) is always cleared */
if (boot_cpu_data.x86_vfm == INTEL_METEORLAKE ||
boot_cpu_data.x86_vfm == INTEL_METEORLAKE_L)
return true;
return false;
}
static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
{
unsigned int sub_bitmaps, eax, ebx, ecx, edx;
cpuid(ARCH_PERFMON_EXT_LEAF, &sub_bitmaps, &ebx, &ecx, &edx);
if (ebx & ARCH_PERFMON_EXT_UMASK2)
pmu->config_mask |= ARCH_PERFMON_EVENTSEL_UMASK2;
if (ebx & ARCH_PERFMON_EXT_EQ)
pmu->config_mask |= ARCH_PERFMON_EVENTSEL_EQ;
if (sub_bitmaps & ARCH_PERFMON_NUM_COUNTER_LEAF_BIT) {
cpuid_count(ARCH_PERFMON_EXT_LEAF, ARCH_PERFMON_NUM_COUNTER_LEAF,
&eax, &ebx, &ecx, &edx);
pmu->cntr_mask64 = eax;
pmu->fixed_cntr_mask64 = ebx;
}
if (!intel_pmu_broken_perf_cap()) {
/* Perf Metric (Bit 15) and PEBS via PT (Bit 16) are hybrid enumeration */
rdmsrl(MSR_IA32_PERF_CAPABILITIES, pmu->intel_cap.capabilities);
}
}
static void intel_pmu_check_hybrid_pmus(struct x86_hybrid_pmu *pmu)
{
intel_pmu_check_counters_mask(&pmu->cntr_mask64, &pmu->fixed_cntr_mask64,
&pmu->intel_ctrl);
pmu->pebs_events_mask = intel_pmu_pebs_mask(pmu->cntr_mask64);
pmu->unconstrained = (struct event_constraint)
__EVENT_CONSTRAINT(0, pmu->cntr_mask64,
0, x86_pmu_num_counters(&pmu->pmu), 0, 0);
if (pmu->intel_cap.perf_metrics)
pmu->intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
else
pmu->intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
if (pmu->intel_cap.pebs_output_pt_available)
pmu->pmu.capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
else
pmu->pmu.capabilities &= ~PERF_PMU_CAP_AUX_OUTPUT;
intel_pmu_check_event_constraints(pmu->event_constraints,
pmu->cntr_mask64,
pmu->fixed_cntr_mask64,
pmu->intel_ctrl);
intel_pmu_check_extra_regs(pmu->extra_regs);
}
static struct x86_hybrid_pmu *find_hybrid_pmu_for_cpu(void)
{
u8 cpu_type = get_this_hybrid_cpu_type();
int i;
/*
* This is running on a CPU model that is known to have hybrid
* configurations. But the CPU told us it is not hybrid, shame
* on it. There should be a fixup function provided for these
* troublesome CPUs (->get_hybrid_cpu_type).
*/
if (cpu_type == HYBRID_INTEL_NONE) {
if (x86_pmu.get_hybrid_cpu_type)
cpu_type = x86_pmu.get_hybrid_cpu_type();
else
return NULL;
}
/*
* This essentially just maps between the 'hybrid_cpu_type'
* and 'hybrid_pmu_type' enums:
*/
for (i = 0; i < x86_pmu.num_hybrid_pmus; i++) {
enum hybrid_pmu_type pmu_type = x86_pmu.hybrid_pmu[i].pmu_type;
if (cpu_type == HYBRID_INTEL_CORE &&
pmu_type == hybrid_big)
return &x86_pmu.hybrid_pmu[i];
if (cpu_type == HYBRID_INTEL_ATOM &&
pmu_type == hybrid_small)
return &x86_pmu.hybrid_pmu[i];
}
return NULL;
}
static bool init_hybrid_pmu(int cpu)
{
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
struct x86_hybrid_pmu *pmu = find_hybrid_pmu_for_cpu();
if (WARN_ON_ONCE(!pmu || (pmu->pmu.type == -1))) {
cpuc->pmu = NULL;
return false;
}
/* Only check and dump the PMU information for the first CPU */
if (!cpumask_empty(&pmu->supported_cpus))
goto end;
if (this_cpu_has(X86_FEATURE_ARCH_PERFMON_EXT))
update_pmu_cap(pmu);
intel_pmu_check_hybrid_pmus(pmu);
if (!check_hw_exists(&pmu->pmu, pmu->cntr_mask, pmu->fixed_cntr_mask))
return false;
pr_info("%s PMU driver: ", pmu->name);
if (pmu->intel_cap.pebs_output_pt_available)
pr_cont("PEBS-via-PT ");
pr_cont("\n");
x86_pmu_show_pmu_cap(&pmu->pmu);
end:
cpumask_set_cpu(cpu, &pmu->supported_cpus);
cpuc->pmu = &pmu->pmu;
return true;
}
static void intel_pmu_cpu_starting(int cpu)
{
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
int core_id = topology_core_id(cpu);
int i;
if (is_hybrid() && !init_hybrid_pmu(cpu))
return;
init_debug_store_on_cpu(cpu);
/*
* Deal with CPUs that don't clear their LBRs on power-up.
*/
intel_pmu_lbr_reset();
cpuc->lbr_sel = NULL;
if (x86_pmu.flags & PMU_FL_TFA) {
WARN_ON_ONCE(cpuc->tfa_shadow);
cpuc->tfa_shadow = ~0ULL;
intel_set_tfa(cpuc, false);
}
if (x86_pmu.version > 1)
flip_smm_bit(&x86_pmu.attr_freeze_on_smi);
/*
* Disable perf metrics if any added CPU doesn't support it.
*
* Turn off the check for a hybrid architecture, because the
* architecture MSR, MSR_IA32_PERF_CAPABILITIES, only indicate
* the architecture features. The perf metrics is a model-specific
* feature for now. The corresponding bit should always be 0 on
* a hybrid platform, e.g., Alder Lake.
*/
if (!is_hybrid() && x86_pmu.intel_cap.perf_metrics) {
union perf_capabilities perf_cap;
rdmsrl(MSR_IA32_PERF_CAPABILITIES, perf_cap.capabilities);
if (!perf_cap.perf_metrics) {
x86_pmu.intel_cap.perf_metrics = 0;
x86_pmu.intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
}
}
if (!cpuc->shared_regs)
return;
if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
for_each_cpu(i, topology_sibling_cpumask(cpu)) {
struct intel_shared_regs *pc;
pc = per_cpu(cpu_hw_events, i).shared_regs;
if (pc && pc->core_id == core_id) {
cpuc->kfree_on_online[0] = cpuc->shared_regs;
cpuc->shared_regs = pc;
break;
}
}
cpuc->shared_regs->core_id = core_id;
cpuc->shared_regs->refcnt++;
}
if (x86_pmu.lbr_sel_map)
cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
for_each_cpu(i, topology_sibling_cpumask(cpu)) {
struct cpu_hw_events *sibling;
struct intel_excl_cntrs *c;
sibling = &per_cpu(cpu_hw_events, i);
c = sibling->excl_cntrs;
if (c && c->core_id == core_id) {
cpuc->kfree_on_online[1] = cpuc->excl_cntrs;
cpuc->excl_cntrs = c;
if (!sibling->excl_thread_id)
cpuc->excl_thread_id = 1;
break;
}
}
cpuc->excl_cntrs->core_id = core_id;
cpuc->excl_cntrs->refcnt++;
}
}
static void free_excl_cntrs(struct cpu_hw_events *cpuc)
{
struct intel_excl_cntrs *c;
c = cpuc->excl_cntrs;
if (c) {
if (c->core_id == -1 || --c->refcnt == 0)
kfree(c);
cpuc->excl_cntrs = NULL;
}
kfree(cpuc->constraint_list);
cpuc->constraint_list = NULL;
}
static void intel_pmu_cpu_dying(int cpu)
{
fini_debug_store_on_cpu(cpu);
}
void intel_cpuc_finish(struct cpu_hw_events *cpuc)
{
struct intel_shared_regs *pc;
pc = cpuc->shared_regs;
if (pc) {
if (pc->core_id == -1 || --pc->refcnt == 0)
kfree(pc);
cpuc->shared_regs = NULL;
}
free_excl_cntrs(cpuc);
}
static void intel_pmu_cpu_dead(int cpu)
{
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
intel_cpuc_finish(cpuc);
if (is_hybrid() && cpuc->pmu)
cpumask_clear_cpu(cpu, &hybrid_pmu(cpuc->pmu)->supported_cpus);
}
static void intel_pmu_sched_task(struct perf_event_pmu_context *pmu_ctx,
bool sched_in)
{
intel_pmu_pebs_sched_task(pmu_ctx, sched_in);
intel_pmu_lbr_sched_task(pmu_ctx, sched_in);
}
static void intel_pmu_swap_task_ctx(struct perf_event_pmu_context *prev_epc,
struct perf_event_pmu_context *next_epc)
{
intel_pmu_lbr_swap_task_ctx(prev_epc, next_epc);
}
static int intel_pmu_check_period(struct perf_event *event, u64 value)
{
return intel_pmu_has_bts_period(event, value) ? -EINVAL : 0;
}
static void intel_aux_output_init(void)
{
/* Refer also intel_pmu_aux_output_match() */
if (x86_pmu.intel_cap.pebs_output_pt_available)
x86_pmu.assign = intel_pmu_assign_event;
}
static int intel_pmu_aux_output_match(struct perf_event *event)
{
/* intel_pmu_assign_event() is needed, refer intel_aux_output_init() */
if (!x86_pmu.intel_cap.pebs_output_pt_available)
return 0;
return is_intel_pt_event(event);
}
static void intel_pmu_filter(struct pmu *pmu, int cpu, bool *ret)
{
struct x86_hybrid_pmu *hpmu = hybrid_pmu(pmu);
*ret = !cpumask_test_cpu(cpu, &hpmu->supported_cpus);
}
PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
PMU_FORMAT_ATTR(ldlat, "config1:0-15");
PMU_FORMAT_ATTR(frontend, "config1:0-23");
PMU_FORMAT_ATTR(snoop_rsp, "config1:0-63");
static struct attribute *intel_arch3_formats_attr[] = {
&format_attr_event.attr,
&format_attr_umask.attr,
&format_attr_edge.attr,
&format_attr_pc.attr,
&format_attr_any.attr,
&format_attr_inv.attr,
&format_attr_cmask.attr,
NULL,
};
static struct attribute *hsw_format_attr[] = {
&format_attr_in_tx.attr,
&format_attr_in_tx_cp.attr,
&format_attr_offcore_rsp.attr,
&format_attr_ldlat.attr,
NULL
};
static struct attribute *nhm_format_attr[] = {
&format_attr_offcore_rsp.attr,
&format_attr_ldlat.attr,
NULL
};
static struct attribute *slm_format_attr[] = {
&format_attr_offcore_rsp.attr,
NULL
};
static struct attribute *cmt_format_attr[] = {
&format_attr_offcore_rsp.attr,
&format_attr_ldlat.attr,
&format_attr_snoop_rsp.attr,
NULL
};
static struct attribute *skl_format_attr[] = {
&format_attr_frontend.attr,
NULL,
};
static __initconst const struct x86_pmu core_pmu = {
.name = "core",
.handle_irq = x86_pmu_handle_irq,
.disable_all = x86_pmu_disable_all,
.enable_all = core_pmu_enable_all,
.enable = core_pmu_enable_event,
.disable = x86_pmu_disable_event,
.hw_config = core_pmu_hw_config,
.schedule_events = x86_schedule_events,
.eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
.perfctr = MSR_ARCH_PERFMON_PERFCTR0,
.fixedctr = MSR_ARCH_PERFMON_FIXED_CTR0,
.event_map = intel_pmu_event_map,
.max_events = ARRAY_SIZE(intel_perfmon_event_map),
.apic = 1,
.large_pebs_flags = LARGE_PEBS_FLAGS,
/*
* Intel PMCs cannot be accessed sanely above 32-bit width,
* so we install an artificial 1<<31 period regardless of
* the generic event period:
*/
.max_period = (1ULL<<31) - 1,
.get_event_constraints = intel_get_event_constraints,
.put_event_constraints = intel_put_event_constraints,
.event_constraints = intel_core_event_constraints,
.guest_get_msrs = core_guest_get_msrs,
.format_attrs = intel_arch_formats_attr,
.events_sysfs_show = intel_event_sysfs_show,
/*
* Virtual (or funny metal) CPU can define x86_pmu.extra_regs
* together with PMU version 1 and thus be using core_pmu with
* shared_regs. We need following callbacks here to allocate
* it properly.
*/
.cpu_prepare = intel_pmu_cpu_prepare,
.cpu_starting = intel_pmu_cpu_starting,
.cpu_dying = intel_pmu_cpu_dying,
.cpu_dead = intel_pmu_cpu_dead,
.check_period = intel_pmu_check_period,
.lbr_reset = intel_pmu_lbr_reset_64,
.lbr_read = intel_pmu_lbr_read_64,
.lbr_save = intel_pmu_lbr_save,
.lbr_restore = intel_pmu_lbr_restore,
};
static __initconst const struct x86_pmu intel_pmu = {
.name = "Intel",
.handle_irq = intel_pmu_handle_irq,
.disable_all = intel_pmu_disable_all,
.enable_all = intel_pmu_enable_all,
.enable = intel_pmu_enable_event,
.disable = intel_pmu_disable_event,
.add = intel_pmu_add_event,
.del = intel_pmu_del_event,
.read = intel_pmu_read_event,
.set_period = intel_pmu_set_period,
.update = intel_pmu_update,
.hw_config = intel_pmu_hw_config,
.schedule_events = x86_schedule_events,
.eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
.perfctr = MSR_ARCH_PERFMON_PERFCTR0,
.fixedctr = MSR_ARCH_PERFMON_FIXED_CTR0,
.event_map = intel_pmu_event_map,
.max_events = ARRAY_SIZE(intel_perfmon_event_map),
.apic = 1,
.large_pebs_flags = LARGE_PEBS_FLAGS,
/*
* Intel PMCs cannot be accessed sanely above 32 bit width,
* so we install an artificial 1<<31 period regardless of
* the generic event period:
*/
.max_period = (1ULL << 31) - 1,
.get_event_constraints = intel_get_event_constraints,
.put_event_constraints = intel_put_event_constraints,
.pebs_aliases = intel_pebs_aliases_core2,
.format_attrs = intel_arch3_formats_attr,
.events_sysfs_show = intel_event_sysfs_show,
.cpu_prepare = intel_pmu_cpu_prepare,
.cpu_starting = intel_pmu_cpu_starting,
.cpu_dying = intel_pmu_cpu_dying,
.cpu_dead = intel_pmu_cpu_dead,
.guest_get_msrs = intel_guest_get_msrs,
.sched_task = intel_pmu_sched_task,
.swap_task_ctx = intel_pmu_swap_task_ctx,
.check_period = intel_pmu_check_period,
.aux_output_match = intel_pmu_aux_output_match,
.lbr_reset = intel_pmu_lbr_reset_64,
.lbr_read = intel_pmu_lbr_read_64,
.lbr_save = intel_pmu_lbr_save,
.lbr_restore = intel_pmu_lbr_restore,
/*
* SMM has access to all 4 rings and while traditionally SMM code only
* ran in CPL0, 2021-era firmware is starting to make use of CPL3 in SMM.
*
* Since the EVENTSEL.{USR,OS} CPL filtering makes no distinction
* between SMM or not, this results in what should be pure userspace
* counters including SMM data.
*
* This is a clear privilege issue, therefore globally disable
* counting SMM by default.
*/
.attr_freeze_on_smi = 1,
};
static __init void intel_clovertown_quirk(void)
{
/*
* PEBS is unreliable due to:
*
* AJ67 - PEBS may experience CPL leaks
* AJ68 - PEBS PMI may be delayed by one event
* AJ69 - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
* AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
*
* AJ67 could be worked around by restricting the OS/USR flags.
* AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
*
* AJ106 could possibly be worked around by not allowing LBR
* usage from PEBS, including the fixup.
* AJ68 could possibly be worked around by always programming
* a pebs_event_reset[0] value and coping with the lost events.
*
* But taken together it might just make sense to not enable PEBS on
* these chips.
*/
pr_warn("PEBS disabled due to CPU errata\n");
x86_pmu.pebs = 0;
x86_pmu.pebs_constraints = NULL;
}
static const struct x86_cpu_desc isolation_ucodes[] = {
INTEL_CPU_DESC(INTEL_HASWELL, 3, 0x0000001f),
INTEL_CPU_DESC(INTEL_HASWELL_L, 1, 0x0000001e),
INTEL_CPU_DESC(INTEL_HASWELL_G, 1, 0x00000015),
INTEL_CPU_DESC(INTEL_HASWELL_X, 2, 0x00000037),
INTEL_CPU_DESC(INTEL_HASWELL_X, 4, 0x0000000a),
INTEL_CPU_DESC(INTEL_BROADWELL, 4, 0x00000023),
INTEL_CPU_DESC(INTEL_BROADWELL_G, 1, 0x00000014),
INTEL_CPU_DESC(INTEL_BROADWELL_D, 2, 0x00000010),
INTEL_CPU_DESC(INTEL_BROADWELL_D, 3, 0x07000009),
INTEL_CPU_DESC(INTEL_BROADWELL_D, 4, 0x0f000009),
INTEL_CPU_DESC(INTEL_BROADWELL_D, 5, 0x0e000002),
INTEL_CPU_DESC(INTEL_BROADWELL_X, 1, 0x0b000014),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 3, 0x00000021),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 4, 0x00000000),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 5, 0x00000000),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 6, 0x00000000),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 7, 0x00000000),
INTEL_CPU_DESC(INTEL_SKYLAKE_X, 11, 0x00000000),
INTEL_CPU_DESC(INTEL_SKYLAKE_L, 3, 0x0000007c),
INTEL_CPU_DESC(INTEL_SKYLAKE, 3, 0x0000007c),
INTEL_CPU_DESC(INTEL_KABYLAKE, 9, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE_L, 9, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE_L, 10, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE_L, 11, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE_L, 12, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE, 10, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE, 11, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE, 12, 0x0000004e),
INTEL_CPU_DESC(INTEL_KABYLAKE, 13, 0x0000004e),
{}
};
static void intel_check_pebs_isolation(void)
{
x86_pmu.pebs_no_isolation = !x86_cpu_has_min_microcode_rev(isolation_ucodes);
}
static __init void intel_pebs_isolation_quirk(void)
{
WARN_ON_ONCE(x86_pmu.check_microcode);
x86_pmu.check_microcode = intel_check_pebs_isolation;
intel_check_pebs_isolation();
}
static const struct x86_cpu_desc pebs_ucodes[] = {
INTEL_CPU_DESC(INTEL_SANDYBRIDGE, 7, 0x00000028),
INTEL_CPU_DESC(INTEL_SANDYBRIDGE_X, 6, 0x00000618),
INTEL_CPU_DESC(INTEL_SANDYBRIDGE_X, 7, 0x0000070c),
{}
};
static bool intel_snb_pebs_broken(void)
{
return !x86_cpu_has_min_microcode_rev(pebs_ucodes);
}
static void intel_snb_check_microcode(void)
{
if (intel_snb_pebs_broken() == x86_pmu.pebs_broken)
return;
/*
* Serialized by the microcode lock..
*/
if (x86_pmu.pebs_broken) {
pr_info("PEBS enabled due to microcode update\n");
x86_pmu.pebs_broken = 0;
} else {
pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
x86_pmu.pebs_broken = 1;
}
}
static bool is_lbr_from(unsigned long msr)
{
unsigned long lbr_from_nr = x86_pmu.lbr_from + x86_pmu.lbr_nr;
return x86_pmu.lbr_from <= msr && msr < lbr_from_nr;
}
/*
* Under certain circumstances, access certain MSR may cause #GP.
* The function tests if the input MSR can be safely accessed.
*/
static bool check_msr(unsigned long msr, u64 mask)
{
u64 val_old, val_new, val_tmp;
/*
* Disable the check for real HW, so we don't
* mess with potentially enabled registers:
*/
if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))
return true;
/*
* Read the current value, change it and read it back to see if it
* matches, this is needed to detect certain hardware emulators
* (qemu/kvm) that don't trap on the MSR access and always return 0s.
*/
if (rdmsrl_safe(msr, &val_old))
return false;
/*
* Only change the bits which can be updated by wrmsrl.
*/
val_tmp = val_old ^ mask;
if (is_lbr_from(msr))
val_tmp = lbr_from_signext_quirk_wr(val_tmp);
if (wrmsrl_safe(msr, val_tmp) ||
rdmsrl_safe(msr, &val_new))
return false;
/*
* Quirk only affects validation in wrmsr(), so wrmsrl()'s value
* should equal rdmsrl()'s even with the quirk.
*/
if (val_new != val_tmp)
return false;
if (is_lbr_from(msr))
val_old = lbr_from_signext_quirk_wr(val_old);
/* Here it's sure that the MSR can be safely accessed.
* Restore the old value and return.
*/
wrmsrl(msr, val_old);
return true;
}
static __init void intel_sandybridge_quirk(void)
{
x86_pmu.check_microcode = intel_snb_check_microcode;
cpus_read_lock();
intel_snb_check_microcode();
cpus_read_unlock();
}
static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
{ PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
{ PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
{ PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
{ PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
{ PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
{ PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
{ PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
};
static __init void intel_arch_events_quirk(void)
{
int bit;
/* disable event that reported as not present by cpuid */
for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
pr_warn("CPUID marked event: \'%s\' unavailable\n",
intel_arch_events_map[bit].name);
}
}
static __init void intel_nehalem_quirk(void)
{
union cpuid10_ebx ebx;
ebx.full = x86_pmu.events_maskl;
if (ebx.split.no_branch_misses_retired) {
/*
* Erratum AAJ80 detected, we work it around by using
* the BR_MISP_EXEC.ANY event. This will over-count
* branch-misses, but it's still much better than the
* architectural event which is often completely bogus:
*/
intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
ebx.split.no_branch_misses_retired = 0;
x86_pmu.events_maskl = ebx.full;
pr_info("CPU erratum AAJ80 worked around\n");
}
}
/*
* enable software workaround for errata:
* SNB: BJ122
* IVB: BV98
* HSW: HSD29
*
* Only needed when HT is enabled. However detecting
* if HT is enabled is difficult (model specific). So instead,
* we enable the workaround in the early boot, and verify if
* it is needed in a later initcall phase once we have valid
* topology information to check if HT is actually enabled
*/
static __init void intel_ht_bug(void)
{
x86_pmu.flags |= PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED;
x86_pmu.start_scheduling = intel_start_scheduling;
x86_pmu.commit_scheduling = intel_commit_scheduling;
x86_pmu.stop_scheduling = intel_stop_scheduling;
}
EVENT_ATTR_STR(mem-loads, mem_ld_hsw, "event=0xcd,umask=0x1,ldlat=3");
EVENT_ATTR_STR(mem-stores, mem_st_hsw, "event=0xd0,umask=0x82")
/* Haswell special events */
EVENT_ATTR_STR(tx-start, tx_start, "event=0xc9,umask=0x1");
EVENT_ATTR_STR(tx-commit, tx_commit, "event=0xc9,umask=0x2");
EVENT_ATTR_STR(tx-abort, tx_abort, "event=0xc9,umask=0x4");
EVENT_ATTR_STR(tx-capacity, tx_capacity, "event=0x54,umask=0x2");
EVENT_ATTR_STR(tx-conflict, tx_conflict, "event=0x54,umask=0x1");
EVENT_ATTR_STR(el-start, el_start, "event=0xc8,umask=0x1");
EVENT_ATTR_STR(el-commit, el_commit, "event=0xc8,umask=0x2");
EVENT_ATTR_STR(el-abort, el_abort, "event=0xc8,umask=0x4");
EVENT_ATTR_STR(el-capacity, el_capacity, "event=0x54,umask=0x2");
EVENT_ATTR_STR(el-conflict, el_conflict, "event=0x54,umask=0x1");
EVENT_ATTR_STR(cycles-t, cycles_t, "event=0x3c,in_tx=1");
EVENT_ATTR_STR(cycles-ct, cycles_ct, "event=0x3c,in_tx=1,in_tx_cp=1");
static struct attribute *hsw_events_attrs[] = {
EVENT_PTR(td_slots_issued),
EVENT_PTR(td_slots_retired),
EVENT_PTR(td_fetch_bubbles),
EVENT_PTR(td_total_slots),
EVENT_PTR(td_total_slots_scale),
EVENT_PTR(td_recovery_bubbles),
EVENT_PTR(td_recovery_bubbles_scale),
NULL
};
static struct attribute *hsw_mem_events_attrs[] = {
EVENT_PTR(mem_ld_hsw),
EVENT_PTR(mem_st_hsw),
NULL,
};
static struct attribute *hsw_tsx_events_attrs[] = {
EVENT_PTR(tx_start),
EVENT_PTR(tx_commit),
EVENT_PTR(tx_abort),
EVENT_PTR(tx_capacity),
EVENT_PTR(tx_conflict),
EVENT_PTR(el_start),
EVENT_PTR(el_commit),
EVENT_PTR(el_abort),
EVENT_PTR(el_capacity),
EVENT_PTR(el_conflict),
EVENT_PTR(cycles_t),
EVENT_PTR(cycles_ct),
NULL
};
EVENT_ATTR_STR(tx-capacity-read, tx_capacity_read, "event=0x54,umask=0x80");
EVENT_ATTR_STR(tx-capacity-write, tx_capacity_write, "event=0x54,umask=0x2");
EVENT_ATTR_STR(el-capacity-read, el_capacity_read, "event=0x54,umask=0x80");
EVENT_ATTR_STR(el-capacity-write, el_capacity_write, "event=0x54,umask=0x2");
static struct attribute *icl_events_attrs[] = {
EVENT_PTR(mem_ld_hsw),
EVENT_PTR(mem_st_hsw),
NULL,
};
static struct attribute *icl_td_events_attrs[] = {
EVENT_PTR(slots),
EVENT_PTR(td_retiring),
EVENT_PTR(td_bad_spec),
EVENT_PTR(td_fe_bound),
EVENT_PTR(td_be_bound),
NULL,
};
static struct attribute *icl_tsx_events_attrs[] = {
EVENT_PTR(tx_start),
EVENT_PTR(tx_abort),
EVENT_PTR(tx_commit),
EVENT_PTR(tx_capacity_read),
EVENT_PTR(tx_capacity_write),
EVENT_PTR(tx_conflict),
EVENT_PTR(el_start),
EVENT_PTR(el_abort),
EVENT_PTR(el_commit),
EVENT_PTR(el_capacity_read),
EVENT_PTR(el_capacity_write),
EVENT_PTR(el_conflict),
EVENT_PTR(cycles_t),
EVENT_PTR(cycles_ct),
NULL,
};
EVENT_ATTR_STR(mem-stores, mem_st_spr, "event=0xcd,umask=0x2");
EVENT_ATTR_STR(mem-loads-aux, mem_ld_aux, "event=0x03,umask=0x82");
static struct attribute *glc_events_attrs[] = {
EVENT_PTR(mem_ld_hsw),
EVENT_PTR(mem_st_spr),
EVENT_PTR(mem_ld_aux),
NULL,
};
static struct attribute *glc_td_events_attrs[] = {
EVENT_PTR(slots),
EVENT_PTR(td_retiring),
EVENT_PTR(td_bad_spec),
EVENT_PTR(td_fe_bound),
EVENT_PTR(td_be_bound),
EVENT_PTR(td_heavy_ops),
EVENT_PTR(td_br_mispredict),
EVENT_PTR(td_fetch_lat),
EVENT_PTR(td_mem_bound),
NULL,
};
static struct attribute *glc_tsx_events_attrs[] = {
EVENT_PTR(tx_start),
EVENT_PTR(tx_abort),
EVENT_PTR(tx_commit),
EVENT_PTR(tx_capacity_read),
EVENT_PTR(tx_capacity_write),
EVENT_PTR(tx_conflict),
EVENT_PTR(cycles_t),
EVENT_PTR(cycles_ct),
NULL,
};
static ssize_t freeze_on_smi_show(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%lu\n", x86_pmu.attr_freeze_on_smi);
}
static DEFINE_MUTEX(freeze_on_smi_mutex);
static ssize_t freeze_on_smi_store(struct device *cdev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long val;
ssize_t ret;
ret = kstrtoul(buf, 0, &val);
if (ret)
return ret;
if (val > 1)
return -EINVAL;
mutex_lock(&freeze_on_smi_mutex);
if (x86_pmu.attr_freeze_on_smi == val)
goto done;
x86_pmu.attr_freeze_on_smi = val;
cpus_read_lock();
on_each_cpu(flip_smm_bit, &val, 1);
cpus_read_unlock();
done:
mutex_unlock(&freeze_on_smi_mutex);
return count;
}
static void update_tfa_sched(void *ignored)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
/*
* check if PMC3 is used
* and if so force schedule out for all event types all contexts
*/
if (test_bit(3, cpuc->active_mask))
perf_pmu_resched(x86_get_pmu(smp_processor_id()));
}
static ssize_t show_sysctl_tfa(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, 40, "%d\n", allow_tsx_force_abort);
}
static ssize_t set_sysctl_tfa(struct device *cdev,
struct device_attribute *attr,
const char *buf, size_t count)
{
bool val;
ssize_t ret;
ret = kstrtobool(buf, &val);
if (ret)
return ret;
/* no change */
if (val == allow_tsx_force_abort)
return count;
allow_tsx_force_abort = val;
cpus_read_lock();
on_each_cpu(update_tfa_sched, NULL, 1);
cpus_read_unlock();
return count;
}
static DEVICE_ATTR_RW(freeze_on_smi);
static ssize_t branches_show(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", x86_pmu.lbr_nr);
}
static DEVICE_ATTR_RO(branches);
static ssize_t branch_counter_nr_show(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", fls(x86_pmu.lbr_counters));
}
static DEVICE_ATTR_RO(branch_counter_nr);
static ssize_t branch_counter_width_show(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", LBR_INFO_BR_CNTR_BITS);
}
static DEVICE_ATTR_RO(branch_counter_width);
static struct attribute *lbr_attrs[] = {
&dev_attr_branches.attr,
&dev_attr_branch_counter_nr.attr,
&dev_attr_branch_counter_width.attr,
NULL
};
static umode_t
lbr_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
/* branches */
if (i == 0)
return x86_pmu.lbr_nr ? attr->mode : 0;
return (x86_pmu.flags & PMU_FL_BR_CNTR) ? attr->mode : 0;
}
static char pmu_name_str[30];
static DEVICE_STRING_ATTR_RO(pmu_name, 0444, pmu_name_str);
static struct attribute *intel_pmu_caps_attrs[] = {
&dev_attr_pmu_name.attr.attr,
NULL
};
static DEVICE_ATTR(allow_tsx_force_abort, 0644,
show_sysctl_tfa,
set_sysctl_tfa);
static struct attribute *intel_pmu_attrs[] = {
&dev_attr_freeze_on_smi.attr,
&dev_attr_allow_tsx_force_abort.attr,
NULL,
};
static umode_t
default_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
if (attr == &dev_attr_allow_tsx_force_abort.attr)
return x86_pmu.flags & PMU_FL_TFA ? attr->mode : 0;
return attr->mode;
}
static umode_t
tsx_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
return boot_cpu_has(X86_FEATURE_RTM) ? attr->mode : 0;
}
static umode_t
pebs_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
return x86_pmu.pebs ? attr->mode : 0;
}
static umode_t
mem_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
if (attr == &event_attr_mem_ld_aux.attr.attr)
return x86_pmu.flags & PMU_FL_MEM_LOADS_AUX ? attr->mode : 0;
return pebs_is_visible(kobj, attr, i);
}
static umode_t
exra_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
return x86_pmu.version >= 2 ? attr->mode : 0;
}
static umode_t
td_is_visible(struct kobject *kobj, struct attribute *attr, int i)
{
/*
* Hide the perf metrics topdown events
* if the feature is not enumerated.
*/
if (x86_pmu.num_topdown_events)
return x86_pmu.intel_cap.perf_metrics ? attr->mode : 0;
return attr->mode;
}
static struct attribute_group group_events_td = {
.name = "events",
.is_visible = td_is_visible,
};
static struct attribute_group group_events_mem = {
.name = "events",
.is_visible = mem_is_visible,
};
static struct attribute_group group_events_tsx = {
.name = "events",
.is_visible = tsx_is_visible,
};
static struct attribute_group group_caps_gen = {
.name = "caps",
.attrs = intel_pmu_caps_attrs,
};
static struct attribute_group group_caps_lbr = {
.name = "caps",
.attrs = lbr_attrs,
.is_visible = lbr_is_visible,
};
static struct attribute_group group_format_extra = {
.name = "format",
.is_visible = exra_is_visible,
};
static struct attribute_group group_format_extra_skl = {
.name = "format",
.is_visible = exra_is_visible,
};
static struct attribute_group group_format_evtsel_ext = {
.name = "format",
.attrs = format_evtsel_ext_attrs,
.is_visible = evtsel_ext_is_visible,
};
static struct attribute_group group_default = {
.attrs = intel_pmu_attrs,
.is_visible = default_is_visible,
};
static const struct attribute_group *attr_update[] = {
&group_events_td,
&group_events_mem,
&group_events_tsx,
&group_caps_gen,
&group_caps_lbr,
&group_format_extra,
&group_format_extra_skl,
&group_format_evtsel_ext,
&group_default,
NULL,
};
EVENT_ATTR_STR_HYBRID(slots, slots_adl, "event=0x00,umask=0x4", hybrid_big);
EVENT_ATTR_STR_HYBRID(topdown-retiring, td_retiring_adl, "event=0xc2,umask=0x0;event=0x00,umask=0x80", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-bad-spec, td_bad_spec_adl, "event=0x73,umask=0x0;event=0x00,umask=0x81", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-fe-bound, td_fe_bound_adl, "event=0x71,umask=0x0;event=0x00,umask=0x82", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-be-bound, td_be_bound_adl, "event=0x74,umask=0x0;event=0x00,umask=0x83", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-heavy-ops, td_heavy_ops_adl, "event=0x00,umask=0x84", hybrid_big);
EVENT_ATTR_STR_HYBRID(topdown-br-mispredict, td_br_mis_adl, "event=0x00,umask=0x85", hybrid_big);
EVENT_ATTR_STR_HYBRID(topdown-fetch-lat, td_fetch_lat_adl, "event=0x00,umask=0x86", hybrid_big);
EVENT_ATTR_STR_HYBRID(topdown-mem-bound, td_mem_bound_adl, "event=0x00,umask=0x87", hybrid_big);
static struct attribute *adl_hybrid_events_attrs[] = {
EVENT_PTR(slots_adl),
EVENT_PTR(td_retiring_adl),
EVENT_PTR(td_bad_spec_adl),
EVENT_PTR(td_fe_bound_adl),
EVENT_PTR(td_be_bound_adl),
EVENT_PTR(td_heavy_ops_adl),
EVENT_PTR(td_br_mis_adl),
EVENT_PTR(td_fetch_lat_adl),
EVENT_PTR(td_mem_bound_adl),
NULL,
};
EVENT_ATTR_STR_HYBRID(topdown-retiring, td_retiring_lnl, "event=0xc2,umask=0x02;event=0x00,umask=0x80", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-fe-bound, td_fe_bound_lnl, "event=0x9c,umask=0x01;event=0x00,umask=0x82", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(topdown-be-bound, td_be_bound_lnl, "event=0xa4,umask=0x02;event=0x00,umask=0x83", hybrid_big_small);
static struct attribute *lnl_hybrid_events_attrs[] = {
EVENT_PTR(slots_adl),
EVENT_PTR(td_retiring_lnl),
EVENT_PTR(td_bad_spec_adl),
EVENT_PTR(td_fe_bound_lnl),
EVENT_PTR(td_be_bound_lnl),
EVENT_PTR(td_heavy_ops_adl),
EVENT_PTR(td_br_mis_adl),
EVENT_PTR(td_fetch_lat_adl),
EVENT_PTR(td_mem_bound_adl),
NULL
};
/* Must be in IDX order */
EVENT_ATTR_STR_HYBRID(mem-loads, mem_ld_adl, "event=0xd0,umask=0x5,ldlat=3;event=0xcd,umask=0x1,ldlat=3", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(mem-stores, mem_st_adl, "event=0xd0,umask=0x6;event=0xcd,umask=0x2", hybrid_big_small);
EVENT_ATTR_STR_HYBRID(mem-loads-aux, mem_ld_aux_adl, "event=0x03,umask=0x82", hybrid_big);
static struct attribute *adl_hybrid_mem_attrs[] = {
EVENT_PTR(mem_ld_adl),
EVENT_PTR(mem_st_adl),
EVENT_PTR(mem_ld_aux_adl),
NULL,
};
static struct attribute *mtl_hybrid_mem_attrs[] = {
EVENT_PTR(mem_ld_adl),
EVENT_PTR(mem_st_adl),
NULL
};
EVENT_ATTR_STR_HYBRID(tx-start, tx_start_adl, "event=0xc9,umask=0x1", hybrid_big);
EVENT_ATTR_STR_HYBRID(tx-commit, tx_commit_adl, "event=0xc9,umask=0x2", hybrid_big);
EVENT_ATTR_STR_HYBRID(tx-abort, tx_abort_adl, "event=0xc9,umask=0x4", hybrid_big);
EVENT_ATTR_STR_HYBRID(tx-conflict, tx_conflict_adl, "event=0x54,umask=0x1", hybrid_big);
EVENT_ATTR_STR_HYBRID(cycles-t, cycles_t_adl, "event=0x3c,in_tx=1", hybrid_big);
EVENT_ATTR_STR_HYBRID(cycles-ct, cycles_ct_adl, "event=0x3c,in_tx=1,in_tx_cp=1", hybrid_big);
EVENT_ATTR_STR_HYBRID(tx-capacity-read, tx_capacity_read_adl, "event=0x54,umask=0x80", hybrid_big);
EVENT_ATTR_STR_HYBRID(tx-capacity-write, tx_capacity_write_adl, "event=0x54,umask=0x2", hybrid_big);
static struct attribute *adl_hybrid_tsx_attrs[] = {
EVENT_PTR(tx_start_adl),
EVENT_PTR(tx_abort_adl),
EVENT_PTR(tx_commit_adl),
EVENT_PTR(tx_capacity_read_adl),
EVENT_PTR(tx_capacity_write_adl),
EVENT_PTR(tx_conflict_adl),
EVENT_PTR(cycles_t_adl),
EVENT_PTR(cycles_ct_adl),
NULL,
};
FORMAT_ATTR_HYBRID(in_tx, hybrid_big);
FORMAT_ATTR_HYBRID(in_tx_cp, hybrid_big);
FORMAT_ATTR_HYBRID(offcore_rsp, hybrid_big_small);
FORMAT_ATTR_HYBRID(ldlat, hybrid_big_small);
FORMAT_ATTR_HYBRID(frontend, hybrid_big);
#define ADL_HYBRID_RTM_FORMAT_ATTR \
FORMAT_HYBRID_PTR(in_tx), \
FORMAT_HYBRID_PTR(in_tx_cp)
#define ADL_HYBRID_FORMAT_ATTR \
FORMAT_HYBRID_PTR(offcore_rsp), \
FORMAT_HYBRID_PTR(ldlat), \
FORMAT_HYBRID_PTR(frontend)
static struct attribute *adl_hybrid_extra_attr_rtm[] = {
ADL_HYBRID_RTM_FORMAT_ATTR,
ADL_HYBRID_FORMAT_ATTR,
NULL
};
static struct attribute *adl_hybrid_extra_attr[] = {
ADL_HYBRID_FORMAT_ATTR,
NULL
};
FORMAT_ATTR_HYBRID(snoop_rsp, hybrid_small);
static struct attribute *mtl_hybrid_extra_attr_rtm[] = {
ADL_HYBRID_RTM_FORMAT_ATTR,
ADL_HYBRID_FORMAT_ATTR,
FORMAT_HYBRID_PTR(snoop_rsp),
NULL
};
static struct attribute *mtl_hybrid_extra_attr[] = {
ADL_HYBRID_FORMAT_ATTR,
FORMAT_HYBRID_PTR(snoop_rsp),
NULL
};
static bool is_attr_for_this_pmu(struct kobject *kobj, struct attribute *attr)
{
struct device *dev = kobj_to_dev(kobj);
struct x86_hybrid_pmu *pmu =
container_of(dev_get_drvdata(dev), struct x86_hybrid_pmu, pmu);
struct perf_pmu_events_hybrid_attr *pmu_attr =
container_of(attr, struct perf_pmu_events_hybrid_attr, attr.attr);
return pmu->pmu_type & pmu_attr->pmu_type;
}
static umode_t hybrid_events_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
return is_attr_for_this_pmu(kobj, attr) ? attr->mode : 0;
}
static inline int hybrid_find_supported_cpu(struct x86_hybrid_pmu *pmu)
{
int cpu = cpumask_first(&pmu->supported_cpus);
return (cpu >= nr_cpu_ids) ? -1 : cpu;
}
static umode_t hybrid_tsx_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *dev = kobj_to_dev(kobj);
struct x86_hybrid_pmu *pmu =
container_of(dev_get_drvdata(dev), struct x86_hybrid_pmu, pmu);
int cpu = hybrid_find_supported_cpu(pmu);
return (cpu >= 0) && is_attr_for_this_pmu(kobj, attr) && cpu_has(&cpu_data(cpu), X86_FEATURE_RTM) ? attr->mode : 0;
}
static umode_t hybrid_format_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *dev = kobj_to_dev(kobj);
struct x86_hybrid_pmu *pmu =
container_of(dev_get_drvdata(dev), struct x86_hybrid_pmu, pmu);
struct perf_pmu_format_hybrid_attr *pmu_attr =
container_of(attr, struct perf_pmu_format_hybrid_attr, attr.attr);
int cpu = hybrid_find_supported_cpu(pmu);
return (cpu >= 0) && (pmu->pmu_type & pmu_attr->pmu_type) ? attr->mode : 0;
}
static umode_t hybrid_td_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *dev = kobj_to_dev(kobj);
struct x86_hybrid_pmu *pmu =
container_of(dev_get_drvdata(dev), struct x86_hybrid_pmu, pmu);
if (!is_attr_for_this_pmu(kobj, attr))
return 0;
/* Only the big core supports perf metrics */
if (pmu->pmu_type == hybrid_big)
return pmu->intel_cap.perf_metrics ? attr->mode : 0;
return attr->mode;
}
static struct attribute_group hybrid_group_events_td = {
.name = "events",
.is_visible = hybrid_td_is_visible,
};
static struct attribute_group hybrid_group_events_mem = {
.name = "events",
.is_visible = hybrid_events_is_visible,
};
static struct attribute_group hybrid_group_events_tsx = {
.name = "events",
.is_visible = hybrid_tsx_is_visible,
};
static struct attribute_group hybrid_group_format_extra = {
.name = "format",
.is_visible = hybrid_format_is_visible,
};
static ssize_t intel_hybrid_get_attr_cpus(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct x86_hybrid_pmu *pmu =
container_of(dev_get_drvdata(dev), struct x86_hybrid_pmu, pmu);
return cpumap_print_to_pagebuf(true, buf, &pmu->supported_cpus);
}
static DEVICE_ATTR(cpus, S_IRUGO, intel_hybrid_get_attr_cpus, NULL);
static struct attribute *intel_hybrid_cpus_attrs[] = {
&dev_attr_cpus.attr,
NULL,
};
static struct attribute_group hybrid_group_cpus = {
.attrs = intel_hybrid_cpus_attrs,
};
static const struct attribute_group *hybrid_attr_update[] = {
&hybrid_group_events_td,
&hybrid_group_events_mem,
&hybrid_group_events_tsx,
&group_caps_gen,
&group_caps_lbr,
&hybrid_group_format_extra,
&group_format_evtsel_ext,
&group_default,
&hybrid_group_cpus,
NULL,
};
static struct attribute *empty_attrs;
static void intel_pmu_check_event_constraints(struct event_constraint *event_constraints,
u64 cntr_mask,
u64 fixed_cntr_mask,
u64 intel_ctrl)
{
struct event_constraint *c;
if (!event_constraints)
return;
/*
* event on fixed counter2 (REF_CYCLES) only works on this
* counter, so do not extend mask to generic counters
*/
for_each_event_constraint(c, event_constraints) {
/*
* Don't extend the topdown slots and metrics
* events to the generic counters.
*/
if (c->idxmsk64 & INTEL_PMC_MSK_TOPDOWN) {
/*
* Disable topdown slots and metrics events,
* if slots event is not in CPUID.
*/
if (!(INTEL_PMC_MSK_FIXED_SLOTS & intel_ctrl))
c->idxmsk64 = 0;
c->weight = hweight64(c->idxmsk64);
continue;
}
if (c->cmask == FIXED_EVENT_FLAGS) {
/* Disabled fixed counters which are not in CPUID */
c->idxmsk64 &= intel_ctrl;
/*
* Don't extend the pseudo-encoding to the
* generic counters
*/
if (!use_fixed_pseudo_encoding(c->code))
c->idxmsk64 |= cntr_mask;
}
c->idxmsk64 &= cntr_mask | (fixed_cntr_mask << INTEL_PMC_IDX_FIXED);
c->weight = hweight64(c->idxmsk64);
}
}
static void intel_pmu_check_extra_regs(struct extra_reg *extra_regs)
{
struct extra_reg *er;
/*
* Access extra MSR may cause #GP under certain circumstances.
* E.g. KVM doesn't support offcore event
* Check all extra_regs here.
*/
if (!extra_regs)
return;
for (er = extra_regs; er->msr; er++) {
er->extra_msr_access = check_msr(er->msr, 0x11UL);
/* Disable LBR select mapping */
if ((er->idx == EXTRA_REG_LBR) && !er->extra_msr_access)
x86_pmu.lbr_sel_map = NULL;
}
}
static inline int intel_pmu_v6_addr_offset(int index, bool eventsel)
{
return MSR_IA32_PMC_V6_STEP * index;
}
static const struct { enum hybrid_pmu_type id; char *name; } intel_hybrid_pmu_type_map[] __initconst = {
{ hybrid_small, "cpu_atom" },
{ hybrid_big, "cpu_core" },
};
static __always_inline int intel_pmu_init_hybrid(enum hybrid_pmu_type pmus)
{
unsigned long pmus_mask = pmus;
struct x86_hybrid_pmu *pmu;
int idx = 0, bit;
x86_pmu.num_hybrid_pmus = hweight_long(pmus_mask);
x86_pmu.hybrid_pmu = kcalloc(x86_pmu.num_hybrid_pmus,
sizeof(struct x86_hybrid_pmu),
GFP_KERNEL);
if (!x86_pmu.hybrid_pmu)
return -ENOMEM;
static_branch_enable(&perf_is_hybrid);
x86_pmu.filter = intel_pmu_filter;
for_each_set_bit(bit, &pmus_mask, ARRAY_SIZE(intel_hybrid_pmu_type_map)) {
pmu = &x86_pmu.hybrid_pmu[idx++];
pmu->pmu_type = intel_hybrid_pmu_type_map[bit].id;
pmu->name = intel_hybrid_pmu_type_map[bit].name;
pmu->cntr_mask64 = x86_pmu.cntr_mask64;
pmu->fixed_cntr_mask64 = x86_pmu.fixed_cntr_mask64;
pmu->pebs_events_mask = intel_pmu_pebs_mask(pmu->cntr_mask64);
pmu->config_mask = X86_RAW_EVENT_MASK;
pmu->unconstrained = (struct event_constraint)
__EVENT_CONSTRAINT(0, pmu->cntr_mask64,
0, x86_pmu_num_counters(&pmu->pmu), 0, 0);
pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
if (pmu->pmu_type & hybrid_small) {
pmu->intel_cap.perf_metrics = 0;
pmu->intel_cap.pebs_output_pt_available = 1;
pmu->mid_ack = true;
} else if (pmu->pmu_type & hybrid_big) {
pmu->intel_cap.perf_metrics = 1;
pmu->intel_cap.pebs_output_pt_available = 0;
pmu->late_ack = true;
}
}
return 0;
}
static __always_inline void intel_pmu_ref_cycles_ext(void)
{
if (!(x86_pmu.events_maskl & (INTEL_PMC_MSK_FIXED_REF_CYCLES >> INTEL_PMC_IDX_FIXED)))
intel_perfmon_event_map[PERF_COUNT_HW_REF_CPU_CYCLES] = 0x013c;
}
static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
{
x86_pmu.late_ack = true;
x86_pmu.limit_period = glc_limit_period;
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.pebs_block = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
x86_pmu.lbr_pt_coexist = true;
x86_pmu.num_topdown_events = 8;
static_call_update(intel_pmu_update_topdown_event,
&icl_update_topdown_event);
static_call_update(intel_pmu_set_topdown_event_period,
&icl_set_topdown_event_period);
memcpy(hybrid_var(pmu, hw_cache_event_ids), glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hybrid_var(pmu, hw_cache_extra_regs), glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
hybrid(pmu, event_constraints) = intel_glc_event_constraints;
hybrid(pmu, pebs_constraints) = intel_glc_pebs_event_constraints;
intel_pmu_ref_cycles_ext();
}
static __always_inline void intel_pmu_init_grt(struct pmu *pmu)
{
x86_pmu.mid_ack = true;
x86_pmu.limit_period = glc_limit_period;
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.pebs_block = true;
x86_pmu.lbr_pt_coexist = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
memcpy(hybrid_var(pmu, hw_cache_event_ids), glp_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hybrid_var(pmu, hw_cache_extra_regs), tnt_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
hybrid_var(pmu, hw_cache_event_ids)[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
hybrid(pmu, event_constraints) = intel_grt_event_constraints;
hybrid(pmu, pebs_constraints) = intel_grt_pebs_event_constraints;
hybrid(pmu, extra_regs) = intel_grt_extra_regs;
intel_pmu_ref_cycles_ext();
}
static __always_inline void intel_pmu_init_lnc(struct pmu *pmu)
{
intel_pmu_init_glc(pmu);
hybrid(pmu, event_constraints) = intel_lnc_event_constraints;
hybrid(pmu, pebs_constraints) = intel_lnc_pebs_event_constraints;
hybrid(pmu, extra_regs) = intel_rwc_extra_regs;
}
static __always_inline void intel_pmu_init_skt(struct pmu *pmu)
{
intel_pmu_init_grt(pmu);
hybrid(pmu, event_constraints) = intel_skt_event_constraints;
hybrid(pmu, extra_regs) = intel_cmt_extra_regs;
}
__init int intel_pmu_init(void)
{
struct attribute **extra_skl_attr = &empty_attrs;
struct attribute **extra_attr = &empty_attrs;
struct attribute **td_attr = &empty_attrs;
struct attribute **mem_attr = &empty_attrs;
struct attribute **tsx_attr = &empty_attrs;
union cpuid10_edx edx;
union cpuid10_eax eax;
union cpuid10_ebx ebx;
unsigned int fixed_mask;
bool pmem = false;
int version, i;
char *name;
struct x86_hybrid_pmu *pmu;
if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
switch (boot_cpu_data.x86) {
case 0x6:
return p6_pmu_init();
case 0xb:
return knc_pmu_init();
case 0xf:
return p4_pmu_init();
}
return -ENODEV;
}
/*
* Check whether the Architectural PerfMon supports
* Branch Misses Retired hw_event or not.
*/
cpuid(10, &eax.full, &ebx.full, &fixed_mask, &edx.full);
if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
return -ENODEV;
version = eax.split.version_id;
if (version < 2)
x86_pmu = core_pmu;
else
x86_pmu = intel_pmu;
x86_pmu.version = version;
x86_pmu.cntr_mask64 = GENMASK_ULL(eax.split.num_counters - 1, 0);
x86_pmu.cntval_bits = eax.split.bit_width;
x86_pmu.cntval_mask = (1ULL << eax.split.bit_width) - 1;
x86_pmu.events_maskl = ebx.full;
x86_pmu.events_mask_len = eax.split.mask_length;
x86_pmu.pebs_events_mask = intel_pmu_pebs_mask(x86_pmu.cntr_mask64);
x86_pmu.pebs_capable = PEBS_COUNTER_MASK;
/*
* Quirk: v2 perfmon does not report fixed-purpose events, so
* assume at least 3 events, when not running in a hypervisor:
*/
if (version > 1 && version < 5) {
int assume = 3 * !boot_cpu_has(X86_FEATURE_HYPERVISOR);
x86_pmu.fixed_cntr_mask64 =
GENMASK_ULL(max((int)edx.split.num_counters_fixed, assume) - 1, 0);
} else if (version >= 5)
x86_pmu.fixed_cntr_mask64 = fixed_mask;
if (boot_cpu_has(X86_FEATURE_PDCM)) {
u64 capabilities;
rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
x86_pmu.intel_cap.capabilities = capabilities;
}
if (x86_pmu.intel_cap.lbr_format == LBR_FORMAT_32) {
x86_pmu.lbr_reset = intel_pmu_lbr_reset_32;
x86_pmu.lbr_read = intel_pmu_lbr_read_32;
}
if (boot_cpu_has(X86_FEATURE_ARCH_LBR))
intel_pmu_arch_lbr_init();
intel_ds_init();
x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
if (version >= 5) {
x86_pmu.intel_cap.anythread_deprecated = edx.split.anythread_deprecated;
if (x86_pmu.intel_cap.anythread_deprecated)
pr_cont(" AnyThread deprecated, ");
}
/*
* Install the hw-cache-events table:
*/
switch (boot_cpu_data.x86_vfm) {
case INTEL_CORE_YONAH:
pr_cont("Core events, ");
name = "core";
break;
case INTEL_CORE2_MEROM:
x86_add_quirk(intel_clovertown_quirk);
fallthrough;
case INTEL_CORE2_MEROM_L:
case INTEL_CORE2_PENRYN:
case INTEL_CORE2_DUNNINGTON:
memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
intel_pmu_lbr_init_core();
x86_pmu.event_constraints = intel_core2_event_constraints;
x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
pr_cont("Core2 events, ");
name = "core2";
break;
case INTEL_NEHALEM:
case INTEL_NEHALEM_EP:
case INTEL_NEHALEM_EX:
memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_nhm();
x86_pmu.event_constraints = intel_nehalem_event_constraints;
x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
x86_pmu.enable_all = intel_pmu_nhm_enable_all;
x86_pmu.extra_regs = intel_nehalem_extra_regs;
x86_pmu.limit_period = nhm_limit_period;
mem_attr = nhm_mem_events_attrs;
/* UOPS_ISSUED.STALLED_CYCLES */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
intel_pmu_pebs_data_source_nhm();
x86_add_quirk(intel_nehalem_quirk);
x86_pmu.pebs_no_tlb = 1;
extra_attr = nhm_format_attr;
pr_cont("Nehalem events, ");
name = "nehalem";
break;
case INTEL_ATOM_BONNELL:
case INTEL_ATOM_BONNELL_MID:
case INTEL_ATOM_SALTWELL:
case INTEL_ATOM_SALTWELL_MID:
case INTEL_ATOM_SALTWELL_TABLET:
memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
intel_pmu_lbr_init_atom();
x86_pmu.event_constraints = intel_gen_event_constraints;
x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_core2;
pr_cont("Atom events, ");
name = "bonnell";
break;
case INTEL_ATOM_SILVERMONT:
case INTEL_ATOM_SILVERMONT_D:
case INTEL_ATOM_SILVERMONT_MID:
case INTEL_ATOM_AIRMONT:
case INTEL_ATOM_AIRMONT_MID:
memcpy(hw_cache_event_ids, slm_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_slm();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
x86_pmu.extra_regs = intel_slm_extra_regs;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
td_attr = slm_events_attrs;
extra_attr = slm_format_attr;
pr_cont("Silvermont events, ");
name = "silvermont";
break;
case INTEL_ATOM_GOLDMONT:
case INTEL_ATOM_GOLDMONT_D:
memcpy(hw_cache_event_ids, glm_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, glm_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_skl();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.pebs_constraints = intel_glm_pebs_event_constraints;
x86_pmu.extra_regs = intel_glm_extra_regs;
/*
* It's recommended to use CPU_CLK_UNHALTED.CORE_P + NPEBS
* for precise cycles.
* :pp is identical to :ppp
*/
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.lbr_pt_coexist = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
td_attr = glm_events_attrs;
extra_attr = slm_format_attr;
pr_cont("Goldmont events, ");
name = "goldmont";
break;
case INTEL_ATOM_GOLDMONT_PLUS:
memcpy(hw_cache_event_ids, glp_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, glp_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_skl();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.extra_regs = intel_glm_extra_regs;
/*
* It's recommended to use CPU_CLK_UNHALTED.CORE_P + NPEBS
* for precise cycles.
*/
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.lbr_pt_coexist = true;
x86_pmu.pebs_capable = ~0ULL;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_PEBS_ALL;
x86_pmu.get_event_constraints = glp_get_event_constraints;
td_attr = glm_events_attrs;
/* Goldmont Plus has 4-wide pipeline */
event_attr_td_total_slots_scale_glm.event_str = "4";
extra_attr = slm_format_attr;
pr_cont("Goldmont plus events, ");
name = "goldmont_plus";
break;
case INTEL_ATOM_TREMONT_D:
case INTEL_ATOM_TREMONT:
case INTEL_ATOM_TREMONT_L:
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, glp_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, tnt_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
intel_pmu_lbr_init_skl();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.extra_regs = intel_tnt_extra_regs;
/*
* It's recommended to use CPU_CLK_UNHALTED.CORE_P + NPEBS
* for precise cycles.
*/
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.lbr_pt_coexist = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.get_event_constraints = tnt_get_event_constraints;
td_attr = tnt_events_attrs;
extra_attr = slm_format_attr;
pr_cont("Tremont events, ");
name = "Tremont";
break;
case INTEL_ATOM_GRACEMONT:
intel_pmu_init_grt(NULL);
intel_pmu_pebs_data_source_grt();
x86_pmu.pebs_latency_data = grt_latency_data;
x86_pmu.get_event_constraints = tnt_get_event_constraints;
td_attr = tnt_events_attrs;
mem_attr = grt_mem_attrs;
extra_attr = nhm_format_attr;
pr_cont("Gracemont events, ");
name = "gracemont";
break;
case INTEL_ATOM_CRESTMONT:
case INTEL_ATOM_CRESTMONT_X:
intel_pmu_init_grt(NULL);
x86_pmu.extra_regs = intel_cmt_extra_regs;
intel_pmu_pebs_data_source_cmt();
x86_pmu.pebs_latency_data = cmt_latency_data;
x86_pmu.get_event_constraints = cmt_get_event_constraints;
td_attr = cmt_events_attrs;
mem_attr = grt_mem_attrs;
extra_attr = cmt_format_attr;
pr_cont("Crestmont events, ");
name = "crestmont";
break;
case INTEL_WESTMERE:
case INTEL_WESTMERE_EP:
case INTEL_WESTMERE_EX:
memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_nhm();
x86_pmu.event_constraints = intel_westmere_event_constraints;
x86_pmu.enable_all = intel_pmu_nhm_enable_all;
x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
x86_pmu.extra_regs = intel_westmere_extra_regs;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
mem_attr = nhm_mem_events_attrs;
/* UOPS_ISSUED.STALLED_CYCLES */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
intel_pmu_pebs_data_source_nhm();
extra_attr = nhm_format_attr;
pr_cont("Westmere events, ");
name = "westmere";
break;
case INTEL_SANDYBRIDGE:
case INTEL_SANDYBRIDGE_X:
x86_add_quirk(intel_sandybridge_quirk);
x86_add_quirk(intel_ht_bug);
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_snb();
x86_pmu.event_constraints = intel_snb_event_constraints;
x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
if (boot_cpu_data.x86_vfm == INTEL_SANDYBRIDGE_X)
x86_pmu.extra_regs = intel_snbep_extra_regs;
else
x86_pmu.extra_regs = intel_snb_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
td_attr = snb_events_attrs;
mem_attr = snb_mem_events_attrs;
/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
extra_attr = nhm_format_attr;
pr_cont("SandyBridge events, ");
name = "sandybridge";
break;
case INTEL_IVYBRIDGE:
case INTEL_IVYBRIDGE_X:
x86_add_quirk(intel_ht_bug);
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
/* dTLB-load-misses on IVB is different than SNB */
hw_cache_event_ids[C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = 0x8108; /* DTLB_LOAD_MISSES.DEMAND_LD_MISS_CAUSES_A_WALK */
memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_snb();
x86_pmu.event_constraints = intel_ivb_event_constraints;
x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
if (boot_cpu_data.x86_vfm == INTEL_IVYBRIDGE_X)
x86_pmu.extra_regs = intel_snbep_extra_regs;
else
x86_pmu.extra_regs = intel_snb_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
td_attr = snb_events_attrs;
mem_attr = snb_mem_events_attrs;
/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
extra_attr = nhm_format_attr;
pr_cont("IvyBridge events, ");
name = "ivybridge";
break;
case INTEL_HASWELL:
case INTEL_HASWELL_X:
case INTEL_HASWELL_L:
case INTEL_HASWELL_G:
x86_add_quirk(intel_ht_bug);
x86_add_quirk(intel_pebs_isolation_quirk);
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_hsw();
x86_pmu.event_constraints = intel_hsw_event_constraints;
x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
x86_pmu.extra_regs = intel_snbep_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.hw_config = hsw_hw_config;
x86_pmu.get_event_constraints = hsw_get_event_constraints;
x86_pmu.limit_period = hsw_limit_period;
x86_pmu.lbr_double_abort = true;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
hsw_format_attr : nhm_format_attr;
td_attr = hsw_events_attrs;
mem_attr = hsw_mem_events_attrs;
tsx_attr = hsw_tsx_events_attrs;
pr_cont("Haswell events, ");
name = "haswell";
break;
case INTEL_BROADWELL:
case INTEL_BROADWELL_D:
case INTEL_BROADWELL_G:
case INTEL_BROADWELL_X:
x86_add_quirk(intel_pebs_isolation_quirk);
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
/* L3_MISS_LOCAL_DRAM is BIT(26) in Broadwell */
hw_cache_extra_regs[C(LL)][C(OP_READ)][C(RESULT_MISS)] = HSW_DEMAND_READ |
BDW_L3_MISS|HSW_SNOOP_DRAM;
hw_cache_extra_regs[C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = HSW_DEMAND_WRITE|BDW_L3_MISS|
HSW_SNOOP_DRAM;
hw_cache_extra_regs[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = HSW_DEMAND_READ|
BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
intel_pmu_lbr_init_hsw();
x86_pmu.event_constraints = intel_bdw_event_constraints;
x86_pmu.pebs_constraints = intel_bdw_pebs_event_constraints;
x86_pmu.extra_regs = intel_snbep_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.hw_config = hsw_hw_config;
x86_pmu.get_event_constraints = hsw_get_event_constraints;
x86_pmu.limit_period = bdw_limit_period;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
hsw_format_attr : nhm_format_attr;
td_attr = hsw_events_attrs;
mem_attr = hsw_mem_events_attrs;
tsx_attr = hsw_tsx_events_attrs;
pr_cont("Broadwell events, ");
name = "broadwell";
break;
case INTEL_XEON_PHI_KNL:
case INTEL_XEON_PHI_KNM:
memcpy(hw_cache_event_ids,
slm_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs,
knl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_knl();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
x86_pmu.extra_regs = intel_knl_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
extra_attr = slm_format_attr;
pr_cont("Knights Landing/Mill events, ");
name = "knights-landing";
break;
case INTEL_SKYLAKE_X:
pmem = true;
fallthrough;
case INTEL_SKYLAKE_L:
case INTEL_SKYLAKE:
case INTEL_KABYLAKE_L:
case INTEL_KABYLAKE:
case INTEL_COMETLAKE_L:
case INTEL_COMETLAKE:
x86_add_quirk(intel_pebs_isolation_quirk);
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, skl_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, skl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_skl();
/* INT_MISC.RECOVERY_CYCLES has umask 1 in Skylake */
event_attr_td_recovery_bubbles.event_str_noht =
"event=0xd,umask=0x1,cmask=1";
event_attr_td_recovery_bubbles.event_str_ht =
"event=0xd,umask=0x1,cmask=1,any=1";
x86_pmu.event_constraints = intel_skl_event_constraints;
x86_pmu.pebs_constraints = intel_skl_pebs_event_constraints;
x86_pmu.extra_regs = intel_skl_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_skl;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.hw_config = hsw_hw_config;
x86_pmu.get_event_constraints = hsw_get_event_constraints;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
hsw_format_attr : nhm_format_attr;
extra_skl_attr = skl_format_attr;
td_attr = hsw_events_attrs;
mem_attr = hsw_mem_events_attrs;
tsx_attr = hsw_tsx_events_attrs;
intel_pmu_pebs_data_source_skl(pmem);
/*
* Processors with CPUID.RTM_ALWAYS_ABORT have TSX deprecated by default.
* TSX force abort hooks are not required on these systems. Only deploy
* workaround when microcode has not enabled X86_FEATURE_RTM_ALWAYS_ABORT.
*/
if (boot_cpu_has(X86_FEATURE_TSX_FORCE_ABORT) &&
!boot_cpu_has(X86_FEATURE_RTM_ALWAYS_ABORT)) {
x86_pmu.flags |= PMU_FL_TFA;
x86_pmu.get_event_constraints = tfa_get_event_constraints;
x86_pmu.enable_all = intel_tfa_pmu_enable_all;
x86_pmu.commit_scheduling = intel_tfa_commit_scheduling;
}
pr_cont("Skylake events, ");
name = "skylake";
break;
case INTEL_ICELAKE_X:
case INTEL_ICELAKE_D:
x86_pmu.pebs_ept = 1;
pmem = true;
fallthrough;
case INTEL_ICELAKE_L:
case INTEL_ICELAKE:
case INTEL_TIGERLAKE_L:
case INTEL_TIGERLAKE:
case INTEL_ROCKETLAKE:
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, skl_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, skl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
intel_pmu_lbr_init_skl();
x86_pmu.event_constraints = intel_icl_event_constraints;
x86_pmu.pebs_constraints = intel_icl_pebs_event_constraints;
x86_pmu.extra_regs = intel_icl_extra_regs;
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.hw_config = hsw_hw_config;
x86_pmu.get_event_constraints = icl_get_event_constraints;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
hsw_format_attr : nhm_format_attr;
extra_skl_attr = skl_format_attr;
mem_attr = icl_events_attrs;
td_attr = icl_td_events_attrs;
tsx_attr = icl_tsx_events_attrs;
x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
x86_pmu.lbr_pt_coexist = true;
intel_pmu_pebs_data_source_skl(pmem);
x86_pmu.num_topdown_events = 4;
static_call_update(intel_pmu_update_topdown_event,
&icl_update_topdown_event);
static_call_update(intel_pmu_set_topdown_event_period,
&icl_set_topdown_event_period);
pr_cont("Icelake events, ");
name = "icelake";
break;
case INTEL_SAPPHIRERAPIDS_X:
case INTEL_EMERALDRAPIDS_X:
x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
x86_pmu.extra_regs = intel_glc_extra_regs;
pr_cont("Sapphire Rapids events, ");
name = "sapphire_rapids";
goto glc_common;
case INTEL_GRANITERAPIDS_X:
case INTEL_GRANITERAPIDS_D:
x86_pmu.extra_regs = intel_rwc_extra_regs;
pr_cont("Granite Rapids events, ");
name = "granite_rapids";
glc_common:
intel_pmu_init_glc(NULL);
x86_pmu.pebs_ept = 1;
x86_pmu.hw_config = hsw_hw_config;
x86_pmu.get_event_constraints = glc_get_event_constraints;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
hsw_format_attr : nhm_format_attr;
extra_skl_attr = skl_format_attr;
mem_attr = glc_events_attrs;
td_attr = glc_td_events_attrs;
tsx_attr = glc_tsx_events_attrs;
intel_pmu_pebs_data_source_skl(true);
break;
case INTEL_ALDERLAKE:
case INTEL_ALDERLAKE_L:
case INTEL_RAPTORLAKE:
case INTEL_RAPTORLAKE_P:
case INTEL_RAPTORLAKE_S:
/*
* Alder Lake has 2 types of CPU, core and atom.
*
* Initialize the common PerfMon capabilities here.
*/
intel_pmu_init_hybrid(hybrid_big_small);
x86_pmu.pebs_latency_data = grt_latency_data;
x86_pmu.get_event_constraints = adl_get_event_constraints;
x86_pmu.hw_config = adl_hw_config;
x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
td_attr = adl_hybrid_events_attrs;
mem_attr = adl_hybrid_mem_attrs;
tsx_attr = adl_hybrid_tsx_attrs;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
adl_hybrid_extra_attr_rtm : adl_hybrid_extra_attr;
/* Initialize big core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
intel_pmu_init_glc(&pmu->pmu);
if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
pmu->cntr_mask64 <<= 2;
pmu->cntr_mask64 |= 0x3;
pmu->fixed_cntr_mask64 <<= 1;
pmu->fixed_cntr_mask64 |= 0x1;
} else {
pmu->cntr_mask64 = x86_pmu.cntr_mask64;
pmu->fixed_cntr_mask64 = x86_pmu.fixed_cntr_mask64;
}
/*
* Quirk: For some Alder Lake machine, when all E-cores are disabled in
* a BIOS, the leaf 0xA will enumerate all counters of P-cores. However,
* the X86_FEATURE_HYBRID_CPU is still set. The above codes will
* mistakenly add extra counters for P-cores. Correct the number of
* counters here.
*/
if ((x86_pmu_num_counters(&pmu->pmu) > 8) || (x86_pmu_num_counters_fixed(&pmu->pmu) > 4)) {
pmu->cntr_mask64 = x86_pmu.cntr_mask64;
pmu->fixed_cntr_mask64 = x86_pmu.fixed_cntr_mask64;
}
pmu->pebs_events_mask = intel_pmu_pebs_mask(pmu->cntr_mask64);
pmu->unconstrained = (struct event_constraint)
__EVENT_CONSTRAINT(0, pmu->cntr_mask64,
0, x86_pmu_num_counters(&pmu->pmu), 0, 0);
pmu->extra_regs = intel_glc_extra_regs;
/* Initialize Atom core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
intel_pmu_init_grt(&pmu->pmu);
x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
intel_pmu_pebs_data_source_adl();
pr_cont("Alderlake Hybrid events, ");
name = "alderlake_hybrid";
break;
case INTEL_METEORLAKE:
case INTEL_METEORLAKE_L:
intel_pmu_init_hybrid(hybrid_big_small);
x86_pmu.pebs_latency_data = cmt_latency_data;
x86_pmu.get_event_constraints = mtl_get_event_constraints;
x86_pmu.hw_config = adl_hw_config;
td_attr = adl_hybrid_events_attrs;
mem_attr = mtl_hybrid_mem_attrs;
tsx_attr = adl_hybrid_tsx_attrs;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
/* Initialize big core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
intel_pmu_init_glc(&pmu->pmu);
pmu->extra_regs = intel_rwc_extra_regs;
/* Initialize Atom core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
intel_pmu_init_grt(&pmu->pmu);
pmu->extra_regs = intel_cmt_extra_regs;
intel_pmu_pebs_data_source_mtl();
pr_cont("Meteorlake Hybrid events, ");
name = "meteorlake_hybrid";
break;
case INTEL_LUNARLAKE_M:
case INTEL_ARROWLAKE:
intel_pmu_init_hybrid(hybrid_big_small);
x86_pmu.pebs_latency_data = lnl_latency_data;
x86_pmu.get_event_constraints = mtl_get_event_constraints;
x86_pmu.hw_config = adl_hw_config;
td_attr = lnl_hybrid_events_attrs;
mem_attr = mtl_hybrid_mem_attrs;
tsx_attr = adl_hybrid_tsx_attrs;
extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
/* Initialize big core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
intel_pmu_init_lnc(&pmu->pmu);
/* Initialize Atom core specific PerfMon capabilities.*/
pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
intel_pmu_init_skt(&pmu->pmu);
intel_pmu_pebs_data_source_lnl();
pr_cont("Lunarlake Hybrid events, ");
name = "lunarlake_hybrid";
break;
default:
switch (x86_pmu.version) {
case 1:
x86_pmu.event_constraints = intel_v1_event_constraints;
pr_cont("generic architected perfmon v1, ");
name = "generic_arch_v1";
break;
case 2:
case 3:
case 4:
/*
* default constraints for v2 and up
*/
x86_pmu.event_constraints = intel_gen_event_constraints;
pr_cont("generic architected perfmon, ");
name = "generic_arch_v2+";
break;
default:
/*
* The default constraints for v5 and up can support up to
* 16 fixed counters. For the fixed counters 4 and later,
* the pseudo-encoding is applied.
* The constraints may be cut according to the CPUID enumeration
* by inserting the EVENT_CONSTRAINT_END.
*/
if (fls64(x86_pmu.fixed_cntr_mask64) > INTEL_PMC_MAX_FIXED)
x86_pmu.fixed_cntr_mask64 &= GENMASK_ULL(INTEL_PMC_MAX_FIXED - 1, 0);
intel_v5_gen_event_constraints[fls64(x86_pmu.fixed_cntr_mask64)].weight = -1;
x86_pmu.event_constraints = intel_v5_gen_event_constraints;
pr_cont("generic architected perfmon, ");
name = "generic_arch_v5+";
break;
}
}
snprintf(pmu_name_str, sizeof(pmu_name_str), "%s", name);
if (!is_hybrid()) {
group_events_td.attrs = td_attr;
group_events_mem.attrs = mem_attr;
group_events_tsx.attrs = tsx_attr;
group_format_extra.attrs = extra_attr;
group_format_extra_skl.attrs = extra_skl_attr;
x86_pmu.attr_update = attr_update;
} else {
hybrid_group_events_td.attrs = td_attr;
hybrid_group_events_mem.attrs = mem_attr;
hybrid_group_events_tsx.attrs = tsx_attr;
hybrid_group_format_extra.attrs = extra_attr;
x86_pmu.attr_update = hybrid_attr_update;
}
intel_pmu_check_counters_mask(&x86_pmu.cntr_mask64,
&x86_pmu.fixed_cntr_mask64,
&x86_pmu.intel_ctrl);
/* AnyThread may be deprecated on arch perfmon v5 or later */
if (x86_pmu.intel_cap.anythread_deprecated)
x86_pmu.format_attrs = intel_arch_formats_attr;
intel_pmu_check_event_constraints(x86_pmu.event_constraints,
x86_pmu.cntr_mask64,
x86_pmu.fixed_cntr_mask64,
x86_pmu.intel_ctrl);
/*
* Access LBR MSR may cause #GP under certain circumstances.
* Check all LBR MSR here.
* Disable LBR access if any LBR MSRs can not be accessed.
*/
if (x86_pmu.lbr_tos && !check_msr(x86_pmu.lbr_tos, 0x3UL))
x86_pmu.lbr_nr = 0;
for (i = 0; i < x86_pmu.lbr_nr; i++) {
if (!(check_msr(x86_pmu.lbr_from + i, 0xffffUL) &&
check_msr(x86_pmu.lbr_to + i, 0xffffUL)))
x86_pmu.lbr_nr = 0;
}
if (x86_pmu.lbr_nr) {
intel_pmu_lbr_init();
pr_cont("%d-deep LBR, ", x86_pmu.lbr_nr);
/* only support branch_stack snapshot for perfmon >= v2 */
if (x86_pmu.disable_all == intel_pmu_disable_all) {
if (boot_cpu_has(X86_FEATURE_ARCH_LBR)) {
static_call_update(perf_snapshot_branch_stack,
intel_pmu_snapshot_arch_branch_stack);
} else {
static_call_update(perf_snapshot_branch_stack,
intel_pmu_snapshot_branch_stack);
}
}
}
intel_pmu_check_extra_regs(x86_pmu.extra_regs);
/* Support full width counters using alternative MSR range */
if (x86_pmu.intel_cap.full_width_write) {
x86_pmu.max_period = x86_pmu.cntval_mask >> 1;
x86_pmu.perfctr = MSR_IA32_PMC0;
pr_cont("full-width counters, ");
}
/* Support V6+ MSR Aliasing */
if (x86_pmu.version >= 6) {
x86_pmu.perfctr = MSR_IA32_PMC_V6_GP0_CTR;
x86_pmu.eventsel = MSR_IA32_PMC_V6_GP0_CFG_A;
x86_pmu.fixedctr = MSR_IA32_PMC_V6_FX0_CTR;
x86_pmu.addr_offset = intel_pmu_v6_addr_offset;
}
if (!is_hybrid() && x86_pmu.intel_cap.perf_metrics)
x86_pmu.intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
if (x86_pmu.intel_cap.pebs_timing_info)
x86_pmu.flags |= PMU_FL_RETIRE_LATENCY;
intel_aux_output_init();
return 0;
}
/*
* HT bug: phase 2 init
* Called once we have valid topology information to check
* whether or not HT is enabled
* If HT is off, then we disable the workaround
*/
static __init int fixup_ht_bug(void)
{
int c;
/*
* problem not present on this CPU model, nothing to do
*/
if (!(x86_pmu.flags & PMU_FL_EXCL_ENABLED))
return 0;
if (topology_max_smt_threads() > 1) {
pr_info("PMU erratum BJ122, BV98, HSD29 worked around, HT is on\n");
return 0;
}
cpus_read_lock();
hardlockup_detector_perf_stop();
x86_pmu.flags &= ~(PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED);
x86_pmu.start_scheduling = NULL;
x86_pmu.commit_scheduling = NULL;
x86_pmu.stop_scheduling = NULL;
hardlockup_detector_perf_restart();
for_each_online_cpu(c)
free_excl_cntrs(&per_cpu(cpu_hw_events, c));
cpus_read_unlock();
pr_info("PMU erratum BJ122, BV98, HSD29 workaround disabled, HT off\n");
return 0;
}
subsys_initcall(fixup_ht_bug)