| // SPDX-License-Identifier: GPL-2.0 |
| #include <dirent.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/param.h> |
| |
| #include <api/fs/tracing_path.h> |
| #include <linux/stddef.h> |
| #include <linux/perf_event.h> |
| #include <linux/zalloc.h> |
| #include <subcmd/pager.h> |
| |
| #include "build-id.h" |
| #include "debug.h" |
| #include "evsel.h" |
| #include "metricgroup.h" |
| #include "parse-events.h" |
| #include "pmu.h" |
| #include "print-events.h" |
| #include "probe-file.h" |
| #include "string2.h" |
| #include "strlist.h" |
| #include "tracepoint.h" |
| #include "pfm.h" |
| #include "pmu-hybrid.h" |
| |
| #define MAX_NAME_LEN 100 |
| |
| /** Strings corresponding to enum perf_type_id. */ |
| static const char * const event_type_descriptors[] = { |
| "Hardware event", |
| "Software event", |
| "Tracepoint event", |
| "Hardware cache event", |
| "Raw hardware event descriptor", |
| "Hardware breakpoint", |
| }; |
| |
| static const struct event_symbol event_symbols_tool[PERF_TOOL_MAX] = { |
| [PERF_TOOL_DURATION_TIME] = { |
| .symbol = "duration_time", |
| .alias = "", |
| }, |
| [PERF_TOOL_USER_TIME] = { |
| .symbol = "user_time", |
| .alias = "", |
| }, |
| [PERF_TOOL_SYSTEM_TIME] = { |
| .symbol = "system_time", |
| .alias = "", |
| }, |
| }; |
| |
| /* |
| * Print the events from <debugfs_mount_point>/tracing/events |
| */ |
| void print_tracepoint_events(const struct print_callbacks *print_cb, void *print_state) |
| { |
| struct dirent **sys_namelist = NULL; |
| int sys_items = tracing_events__scandir_alphasort(&sys_namelist); |
| |
| for (int i = 0; i < sys_items; i++) { |
| struct dirent *sys_dirent = sys_namelist[i]; |
| struct dirent **evt_namelist = NULL; |
| char *dir_path; |
| int evt_items; |
| |
| if (sys_dirent->d_type != DT_DIR || |
| !strcmp(sys_dirent->d_name, ".") || |
| !strcmp(sys_dirent->d_name, "..")) |
| continue; |
| |
| dir_path = get_events_file(sys_dirent->d_name); |
| if (!dir_path) |
| continue; |
| |
| evt_items = scandir(dir_path, &evt_namelist, NULL, alphasort); |
| for (int j = 0; j < evt_items; j++) { |
| struct dirent *evt_dirent = evt_namelist[j]; |
| char evt_path[MAXPATHLEN]; |
| |
| if (evt_dirent->d_type != DT_DIR || |
| !strcmp(evt_dirent->d_name, ".") || |
| !strcmp(evt_dirent->d_name, "..")) |
| continue; |
| |
| if (tp_event_has_id(dir_path, evt_dirent) != 0) |
| continue; |
| |
| snprintf(evt_path, MAXPATHLEN, "%s:%s", |
| sys_dirent->d_name, evt_dirent->d_name); |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| evt_path, |
| /*event_alias=*/NULL, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| "Tracepoint event", |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| } |
| free(dir_path); |
| free(evt_namelist); |
| } |
| free(sys_namelist); |
| } |
| |
| void print_sdt_events(const struct print_callbacks *print_cb, void *print_state) |
| { |
| struct strlist *bidlist, *sdtlist; |
| struct str_node *bid_nd, *sdt_name, *next_sdt_name; |
| const char *last_sdt_name = NULL; |
| |
| /* |
| * The implicitly sorted sdtlist will hold the tracepoint name followed |
| * by @<buildid>. If the tracepoint name is unique (determined by |
| * looking at the adjacent nodes) the @<buildid> is dropped otherwise |
| * the executable path and buildid are added to the name. |
| */ |
| sdtlist = strlist__new(NULL, NULL); |
| if (!sdtlist) { |
| pr_debug("Failed to allocate new strlist for SDT\n"); |
| return; |
| } |
| bidlist = build_id_cache__list_all(true); |
| if (!bidlist) { |
| pr_debug("Failed to get buildids: %d\n", errno); |
| return; |
| } |
| strlist__for_each_entry(bid_nd, bidlist) { |
| struct probe_cache *pcache; |
| struct probe_cache_entry *ent; |
| |
| pcache = probe_cache__new(bid_nd->s, NULL); |
| if (!pcache) |
| continue; |
| list_for_each_entry(ent, &pcache->entries, node) { |
| char buf[1024]; |
| |
| snprintf(buf, sizeof(buf), "%s:%s@%s", |
| ent->pev.group, ent->pev.event, bid_nd->s); |
| strlist__add(sdtlist, buf); |
| } |
| probe_cache__delete(pcache); |
| } |
| strlist__delete(bidlist); |
| |
| strlist__for_each_entry(sdt_name, sdtlist) { |
| bool show_detail = false; |
| char *bid = strchr(sdt_name->s, '@'); |
| char *evt_name = NULL; |
| |
| if (bid) |
| *(bid++) = '\0'; |
| |
| if (last_sdt_name && !strcmp(last_sdt_name, sdt_name->s)) { |
| show_detail = true; |
| } else { |
| next_sdt_name = strlist__next(sdt_name); |
| if (next_sdt_name) { |
| char *bid2 = strchr(next_sdt_name->s, '@'); |
| |
| if (bid2) |
| *bid2 = '\0'; |
| if (strcmp(sdt_name->s, next_sdt_name->s) == 0) |
| show_detail = true; |
| if (bid2) |
| *bid2 = '@'; |
| } |
| } |
| last_sdt_name = sdt_name->s; |
| |
| if (show_detail) { |
| char *path = build_id_cache__origname(bid); |
| |
| if (path) { |
| if (asprintf(&evt_name, "%s@%s(%.12s)", sdt_name->s, path, bid) < 0) |
| evt_name = NULL; |
| free(path); |
| } |
| } |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| evt_name ?: sdt_name->s, |
| /*event_alias=*/NULL, |
| /*deprecated=*/false, |
| /*scale_unit=*/NULL, |
| "SDT event", |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| |
| free(evt_name); |
| } |
| strlist__delete(sdtlist); |
| } |
| |
| int print_hwcache_events(const struct print_callbacks *print_cb, void *print_state) |
| { |
| struct strlist *evt_name_list = strlist__new(NULL, NULL); |
| struct str_node *nd; |
| |
| if (!evt_name_list) { |
| pr_debug("Failed to allocate new strlist for hwcache events\n"); |
| return -ENOMEM; |
| } |
| for (int type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { |
| for (int op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { |
| /* skip invalid cache type */ |
| if (!evsel__is_cache_op_valid(type, op)) |
| continue; |
| |
| for (int i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { |
| struct perf_pmu *pmu = NULL; |
| char name[64]; |
| |
| __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); |
| if (!perf_pmu__has_hybrid()) { |
| if (is_event_supported(PERF_TYPE_HW_CACHE, |
| type | (op << 8) | (i << 16))) |
| strlist__add(evt_name_list, name); |
| continue; |
| } |
| perf_pmu__for_each_hybrid_pmu(pmu) { |
| if (is_event_supported(PERF_TYPE_HW_CACHE, |
| type | (op << 8) | (i << 16) | |
| ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT))) { |
| char new_name[128]; |
| snprintf(new_name, sizeof(new_name), |
| "%s/%s/", pmu->name, name); |
| strlist__add(evt_name_list, new_name); |
| } |
| } |
| } |
| } |
| } |
| |
| strlist__for_each_entry(nd, evt_name_list) { |
| print_cb->print_event(print_state, |
| "cache", |
| /*pmu_name=*/NULL, |
| nd->s, |
| /*event_alias=*/NULL, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| event_type_descriptors[PERF_TYPE_HW_CACHE], |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| } |
| strlist__delete(evt_name_list); |
| return 0; |
| } |
| |
| void print_tool_events(const struct print_callbacks *print_cb, void *print_state) |
| { |
| // Start at 1 because the first enum entry means no tool event. |
| for (int i = 1; i < PERF_TOOL_MAX; ++i) { |
| print_cb->print_event(print_state, |
| "tool", |
| /*pmu_name=*/NULL, |
| event_symbols_tool[i].symbol, |
| event_symbols_tool[i].alias, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| "Tool event", |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| } |
| } |
| |
| void print_symbol_events(const struct print_callbacks *print_cb, void *print_state, |
| unsigned int type, const struct event_symbol *syms, |
| unsigned int max) |
| { |
| struct strlist *evt_name_list = strlist__new(NULL, NULL); |
| struct str_node *nd; |
| |
| if (!evt_name_list) { |
| pr_debug("Failed to allocate new strlist for symbol events\n"); |
| return; |
| } |
| for (unsigned int i = 0; i < max; i++) { |
| /* |
| * New attr.config still not supported here, the latest |
| * example was PERF_COUNT_SW_CGROUP_SWITCHES |
| */ |
| if (syms[i].symbol == NULL) |
| continue; |
| |
| if (!is_event_supported(type, i)) |
| continue; |
| |
| if (strlen(syms[i].alias)) { |
| char name[MAX_NAME_LEN]; |
| |
| snprintf(name, MAX_NAME_LEN, "%s OR %s", syms[i].symbol, syms[i].alias); |
| strlist__add(evt_name_list, name); |
| } else |
| strlist__add(evt_name_list, syms[i].symbol); |
| } |
| |
| strlist__for_each_entry(nd, evt_name_list) { |
| char *alias = strstr(nd->s, " OR "); |
| |
| if (alias) { |
| *alias = '\0'; |
| alias += 4; |
| } |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| nd->s, |
| alias, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| event_type_descriptors[type], |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| } |
| strlist__delete(evt_name_list); |
| } |
| |
| /* |
| * Print the help text for the event symbols: |
| */ |
| void print_events(const struct print_callbacks *print_cb, void *print_state) |
| { |
| print_symbol_events(print_cb, print_state, PERF_TYPE_HARDWARE, |
| event_symbols_hw, PERF_COUNT_HW_MAX); |
| print_symbol_events(print_cb, print_state, PERF_TYPE_SOFTWARE, |
| event_symbols_sw, PERF_COUNT_SW_MAX); |
| |
| print_tool_events(print_cb, print_state); |
| |
| print_hwcache_events(print_cb, print_state); |
| |
| print_pmu_events(print_cb, print_state); |
| |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| "rNNN", |
| /*event_alias=*/NULL, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| event_type_descriptors[PERF_TYPE_RAW], |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| "cpu/t1=v1[,t2=v2,t3 ...]/modifier", |
| /*event_alias=*/NULL, |
| /*scale_unit=*/NULL, |
| /*deprecated=*/false, |
| event_type_descriptors[PERF_TYPE_RAW], |
| "(see 'man perf-list' on how to encode it)", |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| |
| print_cb->print_event(print_state, |
| /*topic=*/NULL, |
| /*pmu_name=*/NULL, |
| "mem:<addr>[/len][:access]", |
| /*scale_unit=*/NULL, |
| /*event_alias=*/NULL, |
| /*deprecated=*/false, |
| event_type_descriptors[PERF_TYPE_BREAKPOINT], |
| /*desc=*/NULL, |
| /*long_desc=*/NULL, |
| /*encoding_desc=*/NULL, |
| /*metric_name=*/NULL, |
| /*metric_expr=*/NULL); |
| |
| print_tracepoint_events(print_cb, print_state); |
| |
| print_sdt_events(print_cb, print_state); |
| |
| metricgroup__print(print_cb, print_state); |
| |
| print_libpfm_events(print_cb, print_state); |
| } |