| /* |
| * Performance events x86 architecture header |
| * |
| * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de> |
| * Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar |
| * Copyright (C) 2009 Jaswinder Singh Rajput |
| * Copyright (C) 2009 Advanced Micro Devices, Inc., Robert Richter |
| * Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra |
| * Copyright (C) 2009 Intel Corporation, <markus.t.metzger@intel.com> |
| * Copyright (C) 2009 Google, Inc., Stephane Eranian |
| * |
| * For licencing details see kernel-base/COPYING |
| */ |
| |
| #include <linux/perf_event.h> |
| |
| #if 0 |
| #undef wrmsrl |
| #define wrmsrl(msr, val) \ |
| do { \ |
| unsigned int _msr = (msr); \ |
| u64 _val = (val); \ |
| trace_printk("wrmsrl(%x, %Lx)\n", (unsigned int)(_msr), \ |
| (unsigned long long)(_val)); \ |
| native_write_msr((_msr), (u32)(_val), (u32)(_val >> 32)); \ |
| } while (0) |
| #endif |
| |
| /* |
| * | NHM/WSM | SNB | |
| * register ------------------------------- |
| * | HT | no HT | HT | no HT | |
| *----------------------------------------- |
| * offcore | core | core | cpu | core | |
| * lbr_sel | core | core | cpu | core | |
| * ld_lat | cpu | core | cpu | core | |
| *----------------------------------------- |
| * |
| * Given that there is a small number of shared regs, |
| * we can pre-allocate their slot in the per-cpu |
| * per-core reg tables. |
| */ |
| enum extra_reg_type { |
| EXTRA_REG_NONE = -1, /* not used */ |
| |
| EXTRA_REG_RSP_0 = 0, /* offcore_response_0 */ |
| EXTRA_REG_RSP_1 = 1, /* offcore_response_1 */ |
| EXTRA_REG_LBR = 2, /* lbr_select */ |
| EXTRA_REG_LDLAT = 3, /* ld_lat_threshold */ |
| EXTRA_REG_FE = 4, /* fe_* */ |
| |
| EXTRA_REG_MAX /* number of entries needed */ |
| }; |
| |
| struct event_constraint { |
| union { |
| unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; |
| u64 idxmsk64; |
| }; |
| u64 code; |
| u64 cmask; |
| int weight; |
| int overlap; |
| int flags; |
| }; |
| /* |
| * struct hw_perf_event.flags flags |
| */ |
| #define PERF_X86_EVENT_PEBS_LDLAT 0x0001 /* ld+ldlat data address sampling */ |
| #define PERF_X86_EVENT_PEBS_ST 0x0002 /* st data address sampling */ |
| #define PERF_X86_EVENT_PEBS_ST_HSW 0x0004 /* haswell style datala, store */ |
| #define PERF_X86_EVENT_COMMITTED 0x0008 /* event passed commit_txn */ |
| #define PERF_X86_EVENT_PEBS_LD_HSW 0x0010 /* haswell style datala, load */ |
| #define PERF_X86_EVENT_PEBS_NA_HSW 0x0020 /* haswell style datala, unknown */ |
| #define PERF_X86_EVENT_EXCL 0x0040 /* HT exclusivity on counter */ |
| #define PERF_X86_EVENT_DYNAMIC 0x0080 /* dynamic alloc'd constraint */ |
| #define PERF_X86_EVENT_RDPMC_ALLOWED 0x0100 /* grant rdpmc permission */ |
| #define PERF_X86_EVENT_EXCL_ACCT 0x0200 /* accounted EXCL event */ |
| #define PERF_X86_EVENT_AUTO_RELOAD 0x0400 /* use PEBS auto-reload */ |
| #define PERF_X86_EVENT_FREERUNNING 0x0800 /* use freerunning PEBS */ |
| |
| |
| struct amd_nb { |
| int nb_id; /* NorthBridge id */ |
| int refcnt; /* reference count */ |
| struct perf_event *owners[X86_PMC_IDX_MAX]; |
| struct event_constraint event_constraints[X86_PMC_IDX_MAX]; |
| }; |
| |
| /* The maximal number of PEBS events: */ |
| #define MAX_PEBS_EVENTS 8 |
| |
| /* |
| * Flags PEBS can handle without an PMI. |
| * |
| * TID can only be handled by flushing at context switch. |
| * |
| */ |
| #define PEBS_FREERUNNING_FLAGS \ |
| (PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \ |
| PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \ |
| PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \ |
| PERF_SAMPLE_TRANSACTION) |
| |
| /* |
| * A debug store configuration. |
| * |
| * We only support architectures that use 64bit fields. |
| */ |
| struct debug_store { |
| u64 bts_buffer_base; |
| u64 bts_index; |
| u64 bts_absolute_maximum; |
| u64 bts_interrupt_threshold; |
| u64 pebs_buffer_base; |
| u64 pebs_index; |
| u64 pebs_absolute_maximum; |
| u64 pebs_interrupt_threshold; |
| u64 pebs_event_reset[MAX_PEBS_EVENTS]; |
| }; |
| |
| /* |
| * Per register state. |
| */ |
| struct er_account { |
| raw_spinlock_t lock; /* per-core: protect structure */ |
| u64 config; /* extra MSR config */ |
| u64 reg; /* extra MSR number */ |
| atomic_t ref; /* reference count */ |
| }; |
| |
| /* |
| * Per core/cpu state |
| * |
| * Used to coordinate shared registers between HT threads or |
| * among events on a single PMU. |
| */ |
| struct intel_shared_regs { |
| struct er_account regs[EXTRA_REG_MAX]; |
| int refcnt; /* per-core: #HT threads */ |
| unsigned core_id; /* per-core: core id */ |
| }; |
| |
| enum intel_excl_state_type { |
| INTEL_EXCL_UNUSED = 0, /* counter is unused */ |
| INTEL_EXCL_SHARED = 1, /* counter can be used by both threads */ |
| INTEL_EXCL_EXCLUSIVE = 2, /* counter can be used by one thread only */ |
| }; |
| |
| struct intel_excl_states { |
| enum intel_excl_state_type state[X86_PMC_IDX_MAX]; |
| bool sched_started; /* true if scheduling has started */ |
| }; |
| |
| struct intel_excl_cntrs { |
| raw_spinlock_t lock; |
| |
| struct intel_excl_states states[2]; |
| |
| union { |
| u16 has_exclusive[2]; |
| u32 exclusive_present; |
| }; |
| |
| int refcnt; /* per-core: #HT threads */ |
| unsigned core_id; /* per-core: core id */ |
| }; |
| |
| #define MAX_LBR_ENTRIES 32 |
| |
| enum { |
| X86_PERF_KFREE_SHARED = 0, |
| X86_PERF_KFREE_EXCL = 1, |
| X86_PERF_KFREE_MAX |
| }; |
| |
| struct cpu_hw_events { |
| /* |
| * Generic x86 PMC bits |
| */ |
| struct perf_event *events[X86_PMC_IDX_MAX]; /* in counter order */ |
| unsigned long active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; |
| unsigned long running[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; |
| int enabled; |
| |
| int n_events; /* the # of events in the below arrays */ |
| int n_added; /* the # last events in the below arrays; |
| they've never been enabled yet */ |
| int n_txn; /* the # last events in the below arrays; |
| added in the current transaction */ |
| int assign[X86_PMC_IDX_MAX]; /* event to counter assignment */ |
| u64 tags[X86_PMC_IDX_MAX]; |
| |
| struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */ |
| struct event_constraint *event_constraint[X86_PMC_IDX_MAX]; |
| |
| int n_excl; /* the number of exclusive events */ |
| |
| unsigned int txn_flags; |
| int is_fake; |
| |
| /* |
| * Intel DebugStore bits |
| */ |
| struct debug_store *ds; |
| u64 pebs_enabled; |
| |
| /* |
| * Intel LBR bits |
| */ |
| int lbr_users; |
| void *lbr_context; |
| struct perf_branch_stack lbr_stack; |
| struct perf_branch_entry lbr_entries[MAX_LBR_ENTRIES]; |
| struct er_account *lbr_sel; |
| u64 br_sel; |
| |
| /* |
| * Intel host/guest exclude bits |
| */ |
| u64 intel_ctrl_guest_mask; |
| u64 intel_ctrl_host_mask; |
| struct perf_guest_switch_msr guest_switch_msrs[X86_PMC_IDX_MAX]; |
| |
| /* |
| * Intel checkpoint mask |
| */ |
| u64 intel_cp_status; |
| |
| /* |
| * manage shared (per-core, per-cpu) registers |
| * used on Intel NHM/WSM/SNB |
| */ |
| struct intel_shared_regs *shared_regs; |
| /* |
| * manage exclusive counter access between hyperthread |
| */ |
| struct event_constraint *constraint_list; /* in enable order */ |
| struct intel_excl_cntrs *excl_cntrs; |
| int excl_thread_id; /* 0 or 1 */ |
| |
| /* |
| * AMD specific bits |
| */ |
| struct amd_nb *amd_nb; |
| /* Inverted mask of bits to clear in the perf_ctr ctrl registers */ |
| u64 perf_ctr_virt_mask; |
| |
| void *kfree_on_online[X86_PERF_KFREE_MAX]; |
| }; |
| |
| #define __EVENT_CONSTRAINT(c, n, m, w, o, f) {\ |
| { .idxmsk64 = (n) }, \ |
| .code = (c), \ |
| .cmask = (m), \ |
| .weight = (w), \ |
| .overlap = (o), \ |
| .flags = f, \ |
| } |
| |
| #define EVENT_CONSTRAINT(c, n, m) \ |
| __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 0, 0) |
| |
| #define INTEL_EXCLEVT_CONSTRAINT(c, n) \ |
| __EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT, HWEIGHT(n),\ |
| 0, PERF_X86_EVENT_EXCL) |
| |
| /* |
| * The overlap flag marks event constraints with overlapping counter |
| * masks. This is the case if the counter mask of such an event is not |
| * a subset of any other counter mask of a constraint with an equal or |
| * higher weight, e.g.: |
| * |
| * c_overlaps = EVENT_CONSTRAINT_OVERLAP(0, 0x09, 0); |
| * c_another1 = EVENT_CONSTRAINT(0, 0x07, 0); |
| * c_another2 = EVENT_CONSTRAINT(0, 0x38, 0); |
| * |
| * The event scheduler may not select the correct counter in the first |
| * cycle because it needs to know which subsequent events will be |
| * scheduled. It may fail to schedule the events then. So we set the |
| * overlap flag for such constraints to give the scheduler a hint which |
| * events to select for counter rescheduling. |
| * |
| * Care must be taken as the rescheduling algorithm is O(n!) which |
| * will increase scheduling cycles for an over-commited system |
| * dramatically. The number of such EVENT_CONSTRAINT_OVERLAP() macros |
| * and its counter masks must be kept at a minimum. |
| */ |
| #define EVENT_CONSTRAINT_OVERLAP(c, n, m) \ |
| __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 1, 0) |
| |
| /* |
| * Constraint on the Event code. |
| */ |
| #define INTEL_EVENT_CONSTRAINT(c, n) \ |
| EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT) |
| |
| /* |
| * Constraint on the Event code + UMask + fixed-mask |
| * |
| * filter mask to validate fixed counter events. |
| * the following filters disqualify for fixed counters: |
| * - inv |
| * - edge |
| * - cnt-mask |
| * - in_tx |
| * - in_tx_checkpointed |
| * The other filters are supported by fixed counters. |
| * The any-thread option is supported starting with v3. |
| */ |
| #define FIXED_EVENT_FLAGS (X86_RAW_EVENT_MASK|HSW_IN_TX|HSW_IN_TX_CHECKPOINTED) |
| #define FIXED_EVENT_CONSTRAINT(c, n) \ |
| EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS) |
| |
| /* |
| * Constraint on the Event code + UMask |
| */ |
| #define INTEL_UEVENT_CONSTRAINT(c, n) \ |
| EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK) |
| |
| /* Like UEVENT_CONSTRAINT, but match flags too */ |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \ |
| EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS) |
| |
| #define INTEL_EXCLUEVT_CONSTRAINT(c, n) \ |
| __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_EXCL) |
| |
| #define INTEL_PLD_CONSTRAINT(c, n) \ |
| __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT) |
| |
| #define INTEL_PST_CONSTRAINT(c, n) \ |
| __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST) |
| |
| /* Event constraint, but match on all event flags too. */ |
| #define INTEL_FLAGS_EVENT_CONSTRAINT(c, n) \ |
| EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS) |
| |
| /* Check only flags, but allow all event/umask */ |
| #define INTEL_ALL_EVENT_CONSTRAINT(code, n) \ |
| EVENT_CONSTRAINT(code, n, X86_ALL_EVENT_FLAGS) |
| |
| /* Check flags and event code, and set the HSW store flag */ |
| #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_ST(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW) |
| |
| /* Check flags and event code, and set the HSW load flag */ |
| #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW) |
| |
| #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_XLD(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, \ |
| PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL) |
| |
| /* Check flags and event code/umask, and set the HSW store flag */ |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW) |
| |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XST(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, \ |
| PERF_X86_EVENT_PEBS_ST_HSW|PERF_X86_EVENT_EXCL) |
| |
| /* Check flags and event code/umask, and set the HSW load flag */ |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW) |
| |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ |
| HWEIGHT(n), 0, \ |
| PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL) |
| |
| /* Check flags and event code/umask, and set the HSW N/A flag */ |
| #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(code, n) \ |
| __EVENT_CONSTRAINT(code, n, \ |
| INTEL_ARCH_EVENT_MASK|INTEL_ARCH_EVENT_MASK, \ |
| HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_NA_HSW) |
| |
| |
| /* |
| * We define the end marker as having a weight of -1 |
| * to enable blacklisting of events using a counter bitmask |
| * of zero and thus a weight of zero. |
| * The end marker has a weight that cannot possibly be |
| * obtained from counting the bits in the bitmask. |
| */ |
| #define EVENT_CONSTRAINT_END { .weight = -1 } |
| |
| /* |
| * Check for end marker with weight == -1 |
| */ |
| #define for_each_event_constraint(e, c) \ |
| for ((e) = (c); (e)->weight != -1; (e)++) |
| |
| /* |
| * Extra registers for specific events. |
| * |
| * Some events need large masks and require external MSRs. |
| * Those extra MSRs end up being shared for all events on |
| * a PMU and sometimes between PMU of sibling HT threads. |
| * In either case, the kernel needs to handle conflicting |
| * accesses to those extra, shared, regs. The data structure |
| * to manage those registers is stored in cpu_hw_event. |
| */ |
| struct extra_reg { |
| unsigned int event; |
| unsigned int msr; |
| u64 config_mask; |
| u64 valid_mask; |
| int idx; /* per_xxx->regs[] reg index */ |
| bool extra_msr_access; |
| }; |
| |
| #define EVENT_EXTRA_REG(e, ms, m, vm, i) { \ |
| .event = (e), \ |
| .msr = (ms), \ |
| .config_mask = (m), \ |
| .valid_mask = (vm), \ |
| .idx = EXTRA_REG_##i, \ |
| .extra_msr_access = true, \ |
| } |
| |
| #define INTEL_EVENT_EXTRA_REG(event, msr, vm, idx) \ |
| EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT, vm, idx) |
| |
| #define INTEL_UEVENT_EXTRA_REG(event, msr, vm, idx) \ |
| EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT | \ |
| ARCH_PERFMON_EVENTSEL_UMASK, vm, idx) |
| |
| #define INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(c) \ |
| INTEL_UEVENT_EXTRA_REG(c, \ |
| MSR_PEBS_LD_LAT_THRESHOLD, \ |
| 0xffff, \ |
| LDLAT) |
| |
| #define EVENT_EXTRA_END EVENT_EXTRA_REG(0, 0, 0, 0, RSP_0) |
| |
| union perf_capabilities { |
| struct { |
| u64 lbr_format:6; |
| u64 pebs_trap:1; |
| u64 pebs_arch_reg:1; |
| u64 pebs_format:4; |
| u64 smm_freeze:1; |
| /* |
| * PMU supports separate counter range for writing |
| * values > 32bit. |
| */ |
| u64 full_width_write:1; |
| }; |
| u64 capabilities; |
| }; |
| |
| struct x86_pmu_quirk { |
| struct x86_pmu_quirk *next; |
| void (*func)(void); |
| }; |
| |
| union x86_pmu_config { |
| struct { |
| u64 event:8, |
| umask:8, |
| usr:1, |
| os:1, |
| edge:1, |
| pc:1, |
| interrupt:1, |
| __reserved1:1, |
| en:1, |
| inv:1, |
| cmask:8, |
| event2:4, |
| __reserved2:4, |
| go:1, |
| ho:1; |
| } bits; |
| u64 value; |
| }; |
| |
| #define X86_CONFIG(args...) ((union x86_pmu_config){.bits = {args}}).value |
| |
| enum { |
| x86_lbr_exclusive_lbr, |
| x86_lbr_exclusive_bts, |
| x86_lbr_exclusive_pt, |
| x86_lbr_exclusive_max, |
| }; |
| |
| /* |
| * struct x86_pmu - generic x86 pmu |
| */ |
| struct x86_pmu { |
| /* |
| * Generic x86 PMC bits |
| */ |
| const char *name; |
| int version; |
| int (*handle_irq)(struct pt_regs *); |
| void (*disable_all)(void); |
| void (*enable_all)(int added); |
| void (*enable)(struct perf_event *); |
| void (*disable)(struct perf_event *); |
| int (*hw_config)(struct perf_event *event); |
| int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign); |
| unsigned eventsel; |
| unsigned perfctr; |
| int (*addr_offset)(int index, bool eventsel); |
| int (*rdpmc_index)(int index); |
| u64 (*event_map)(int); |
| int max_events; |
| int num_counters; |
| int num_counters_fixed; |
| int cntval_bits; |
| u64 cntval_mask; |
| union { |
| unsigned long events_maskl; |
| unsigned long events_mask[BITS_TO_LONGS(ARCH_PERFMON_EVENTS_COUNT)]; |
| }; |
| int events_mask_len; |
| int apic; |
| u64 max_period; |
| struct event_constraint * |
| (*get_event_constraints)(struct cpu_hw_events *cpuc, |
| int idx, |
| struct perf_event *event); |
| |
| void (*put_event_constraints)(struct cpu_hw_events *cpuc, |
| struct perf_event *event); |
| |
| void (*start_scheduling)(struct cpu_hw_events *cpuc); |
| |
| void (*commit_scheduling)(struct cpu_hw_events *cpuc, int idx, int cntr); |
| |
| void (*stop_scheduling)(struct cpu_hw_events *cpuc); |
| |
| struct event_constraint *event_constraints; |
| struct x86_pmu_quirk *quirks; |
| int perfctr_second_write; |
| bool late_ack; |
| unsigned (*limit_period)(struct perf_event *event, unsigned l); |
| |
| /* |
| * sysfs attrs |
| */ |
| int attr_rdpmc_broken; |
| int attr_rdpmc; |
| struct attribute **format_attrs; |
| struct attribute **event_attrs; |
| |
| ssize_t (*events_sysfs_show)(char *page, u64 config); |
| struct attribute **cpu_events; |
| |
| /* |
| * CPU Hotplug hooks |
| */ |
| int (*cpu_prepare)(int cpu); |
| void (*cpu_starting)(int cpu); |
| void (*cpu_dying)(int cpu); |
| void (*cpu_dead)(int cpu); |
| |
| void (*check_microcode)(void); |
| void (*sched_task)(struct perf_event_context *ctx, |
| bool sched_in); |
| |
| /* |
| * Intel Arch Perfmon v2+ |
| */ |
| u64 intel_ctrl; |
| union perf_capabilities intel_cap; |
| |
| /* |
| * Intel DebugStore bits |
| */ |
| unsigned int bts :1, |
| bts_active :1, |
| pebs :1, |
| pebs_active :1, |
| pebs_broken :1; |
| int pebs_record_size; |
| void (*drain_pebs)(struct pt_regs *regs); |
| struct event_constraint *pebs_constraints; |
| void (*pebs_aliases)(struct perf_event *event); |
| int max_pebs_events; |
| unsigned long free_running_flags; |
| |
| /* |
| * Intel LBR |
| */ |
| unsigned long lbr_tos, lbr_from, lbr_to; /* MSR base regs */ |
| int lbr_nr; /* hardware stack size */ |
| u64 lbr_sel_mask; /* LBR_SELECT valid bits */ |
| const int *lbr_sel_map; /* lbr_select mappings */ |
| bool lbr_double_abort; /* duplicated lbr aborts */ |
| |
| /* |
| * Intel PT/LBR/BTS are exclusive |
| */ |
| atomic_t lbr_exclusive[x86_lbr_exclusive_max]; |
| |
| /* |
| * Extra registers for events |
| */ |
| struct extra_reg *extra_regs; |
| unsigned int flags; |
| |
| /* |
| * Intel host/guest support (KVM) |
| */ |
| struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr); |
| }; |
| |
| struct x86_perf_task_context { |
| u64 lbr_from[MAX_LBR_ENTRIES]; |
| u64 lbr_to[MAX_LBR_ENTRIES]; |
| u64 lbr_info[MAX_LBR_ENTRIES]; |
| int tos; |
| int lbr_callstack_users; |
| int lbr_stack_state; |
| }; |
| |
| #define x86_add_quirk(func_) \ |
| do { \ |
| static struct x86_pmu_quirk __quirk __initdata = { \ |
| .func = func_, \ |
| }; \ |
| __quirk.next = x86_pmu.quirks; \ |
| x86_pmu.quirks = &__quirk; \ |
| } while (0) |
| |
| /* |
| * x86_pmu flags |
| */ |
| #define PMU_FL_NO_HT_SHARING 0x1 /* no hyper-threading resource sharing */ |
| #define PMU_FL_HAS_RSP_1 0x2 /* has 2 equivalent offcore_rsp regs */ |
| #define PMU_FL_EXCL_CNTRS 0x4 /* has exclusive counter requirements */ |
| #define PMU_FL_EXCL_ENABLED 0x8 /* exclusive counter active */ |
| |
| #define EVENT_VAR(_id) event_attr_##_id |
| #define EVENT_PTR(_id) &event_attr_##_id.attr.attr |
| |
| #define EVENT_ATTR(_name, _id) \ |
| static struct perf_pmu_events_attr EVENT_VAR(_id) = { \ |
| .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \ |
| .id = PERF_COUNT_HW_##_id, \ |
| .event_str = NULL, \ |
| }; |
| |
| #define EVENT_ATTR_STR(_name, v, str) \ |
| static struct perf_pmu_events_attr event_attr_##v = { \ |
| .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \ |
| .id = 0, \ |
| .event_str = str, \ |
| }; |
| |
| extern struct x86_pmu x86_pmu __read_mostly; |
| |
| static inline bool x86_pmu_has_lbr_callstack(void) |
| { |
| return x86_pmu.lbr_sel_map && |
| x86_pmu.lbr_sel_map[PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT] > 0; |
| } |
| |
| DECLARE_PER_CPU(struct cpu_hw_events, cpu_hw_events); |
| |
| int x86_perf_event_set_period(struct perf_event *event); |
| |
| /* |
| * Generalized hw caching related hw_event table, filled |
| * in on a per model basis. A value of 0 means |
| * 'not supported', -1 means 'hw_event makes no sense on |
| * this CPU', any other value means the raw hw_event |
| * ID. |
| */ |
| |
| #define C(x) PERF_COUNT_HW_CACHE_##x |
| |
| extern u64 __read_mostly hw_cache_event_ids |
| [PERF_COUNT_HW_CACHE_MAX] |
| [PERF_COUNT_HW_CACHE_OP_MAX] |
| [PERF_COUNT_HW_CACHE_RESULT_MAX]; |
| extern u64 __read_mostly hw_cache_extra_regs |
| [PERF_COUNT_HW_CACHE_MAX] |
| [PERF_COUNT_HW_CACHE_OP_MAX] |
| [PERF_COUNT_HW_CACHE_RESULT_MAX]; |
| |
| u64 x86_perf_event_update(struct perf_event *event); |
| |
| static inline unsigned int x86_pmu_config_addr(int index) |
| { |
| return x86_pmu.eventsel + (x86_pmu.addr_offset ? |
| x86_pmu.addr_offset(index, true) : index); |
| } |
| |
| static inline unsigned int x86_pmu_event_addr(int index) |
| { |
| return x86_pmu.perfctr + (x86_pmu.addr_offset ? |
| x86_pmu.addr_offset(index, false) : index); |
| } |
| |
| static inline int x86_pmu_rdpmc_index(int index) |
| { |
| return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index; |
| } |
| |
| int x86_add_exclusive(unsigned int what); |
| |
| void x86_del_exclusive(unsigned int what); |
| |
| int x86_reserve_hardware(void); |
| |
| void x86_release_hardware(void); |
| |
| void hw_perf_lbr_event_destroy(struct perf_event *event); |
| |
| int x86_setup_perfctr(struct perf_event *event); |
| |
| int x86_pmu_hw_config(struct perf_event *event); |
| |
| void x86_pmu_disable_all(void); |
| |
| static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc, |
| u64 enable_mask) |
| { |
| u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask); |
| |
| if (hwc->extra_reg.reg) |
| wrmsrl(hwc->extra_reg.reg, hwc->extra_reg.config); |
| wrmsrl(hwc->config_base, (hwc->config | enable_mask) & ~disable_mask); |
| } |
| |
| void x86_pmu_enable_all(int added); |
| |
| int perf_assign_events(struct event_constraint **constraints, int n, |
| int wmin, int wmax, int gpmax, int *assign); |
| int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign); |
| |
| void x86_pmu_stop(struct perf_event *event, int flags); |
| |
| static inline void x86_pmu_disable_event(struct perf_event *event) |
| { |
| struct hw_perf_event *hwc = &event->hw; |
| |
| wrmsrl(hwc->config_base, hwc->config); |
| } |
| |
| void x86_pmu_enable_event(struct perf_event *event); |
| |
| int x86_pmu_handle_irq(struct pt_regs *regs); |
| |
| extern struct event_constraint emptyconstraint; |
| |
| extern struct event_constraint unconstrained; |
| |
| static inline bool kernel_ip(unsigned long ip) |
| { |
| #ifdef CONFIG_X86_32 |
| return ip > PAGE_OFFSET; |
| #else |
| return (long)ip < 0; |
| #endif |
| } |
| |
| /* |
| * Not all PMUs provide the right context information to place the reported IP |
| * into full context. Specifically segment registers are typically not |
| * supplied. |
| * |
| * Assuming the address is a linear address (it is for IBS), we fake the CS and |
| * vm86 mode using the known zero-based code segment and 'fix up' the registers |
| * to reflect this. |
| * |
| * Intel PEBS/LBR appear to typically provide the effective address, nothing |
| * much we can do about that but pray and treat it like a linear address. |
| */ |
| static inline void set_linear_ip(struct pt_regs *regs, unsigned long ip) |
| { |
| regs->cs = kernel_ip(ip) ? __KERNEL_CS : __USER_CS; |
| if (regs->flags & X86_VM_MASK) |
| regs->flags ^= (PERF_EFLAGS_VM | X86_VM_MASK); |
| regs->ip = ip; |
| } |
| |
| ssize_t x86_event_sysfs_show(char *page, u64 config, u64 event); |
| ssize_t intel_event_sysfs_show(char *page, u64 config); |
| |
| struct attribute **merge_attr(struct attribute **a, struct attribute **b); |
| |
| #ifdef CONFIG_CPU_SUP_AMD |
| |
| int amd_pmu_init(void); |
| |
| #else /* CONFIG_CPU_SUP_AMD */ |
| |
| static inline int amd_pmu_init(void) |
| { |
| return 0; |
| } |
| |
| #endif /* CONFIG_CPU_SUP_AMD */ |
| |
| #ifdef CONFIG_CPU_SUP_INTEL |
| |
| static inline bool intel_pmu_has_bts(struct perf_event *event) |
| { |
| if (event->attr.config == PERF_COUNT_HW_BRANCH_INSTRUCTIONS && |
| !event->attr.freq && event->hw.sample_period == 1) |
| return true; |
| |
| return false; |
| } |
| |
| int intel_pmu_save_and_restart(struct perf_event *event); |
| |
| struct event_constraint * |
| x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx, |
| struct perf_event *event); |
| |
| struct intel_shared_regs *allocate_shared_regs(int cpu); |
| |
| int intel_pmu_init(void); |
| |
| void init_debug_store_on_cpu(int cpu); |
| |
| void fini_debug_store_on_cpu(int cpu); |
| |
| void release_ds_buffers(void); |
| |
| void reserve_ds_buffers(void); |
| |
| extern struct event_constraint bts_constraint; |
| |
| void intel_pmu_enable_bts(u64 config); |
| |
| void intel_pmu_disable_bts(void); |
| |
| int intel_pmu_drain_bts_buffer(void); |
| |
| extern struct event_constraint intel_core2_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_atom_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_slm_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_nehalem_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_westmere_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_snb_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_ivb_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_hsw_pebs_event_constraints[]; |
| |
| extern struct event_constraint intel_skl_pebs_event_constraints[]; |
| |
| struct event_constraint *intel_pebs_constraints(struct perf_event *event); |
| |
| void intel_pmu_pebs_enable(struct perf_event *event); |
| |
| void intel_pmu_pebs_disable(struct perf_event *event); |
| |
| void intel_pmu_pebs_enable_all(void); |
| |
| void intel_pmu_pebs_disable_all(void); |
| |
| void intel_pmu_pebs_sched_task(struct perf_event_context *ctx, bool sched_in); |
| |
| void intel_ds_init(void); |
| |
| void intel_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in); |
| |
| void intel_pmu_lbr_reset(void); |
| |
| void intel_pmu_lbr_enable(struct perf_event *event); |
| |
| void intel_pmu_lbr_disable(struct perf_event *event); |
| |
| void intel_pmu_lbr_enable_all(bool pmi); |
| |
| void intel_pmu_lbr_disable_all(void); |
| |
| void intel_pmu_lbr_read(void); |
| |
| void intel_pmu_lbr_init_core(void); |
| |
| void intel_pmu_lbr_init_nhm(void); |
| |
| void intel_pmu_lbr_init_atom(void); |
| |
| void intel_pmu_lbr_init_snb(void); |
| |
| void intel_pmu_lbr_init_hsw(void); |
| |
| void intel_pmu_lbr_init_skl(void); |
| |
| int intel_pmu_setup_lbr_filter(struct perf_event *event); |
| |
| void intel_pt_interrupt(void); |
| |
| int intel_bts_interrupt(void); |
| |
| void intel_bts_enable_local(void); |
| |
| void intel_bts_disable_local(void); |
| |
| int p4_pmu_init(void); |
| |
| int p6_pmu_init(void); |
| |
| int knc_pmu_init(void); |
| |
| ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr, |
| char *page); |
| |
| static inline int is_ht_workaround_enabled(void) |
| { |
| return !!(x86_pmu.flags & PMU_FL_EXCL_ENABLED); |
| } |
| |
| #else /* CONFIG_CPU_SUP_INTEL */ |
| |
| static inline void reserve_ds_buffers(void) |
| { |
| } |
| |
| static inline void release_ds_buffers(void) |
| { |
| } |
| |
| static inline int intel_pmu_init(void) |
| { |
| return 0; |
| } |
| |
| static inline struct intel_shared_regs *allocate_shared_regs(int cpu) |
| { |
| return NULL; |
| } |
| |
| static inline int is_ht_workaround_enabled(void) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_CPU_SUP_INTEL */ |