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Add a term to allow this. The term isn't a general CPU list due to ',' already being a special character in event parsing. An example of mixing different types of events counted on different CPUs: ``` $ perf stat -A -C 0,4,8 -e "instructions/cpu=3D0/,l1d-misses/cpu=3D4/,inst_= retired.any/cpu=3D8/,cycles" -a sleep 0.1 Performance counter stats for 'system wide': CPU0 419,426 instructions/cpu=3D0/ # 0.25= insn per cycle CPU4 instructions/cpu=3D0/ CPU8 instructions/cpu=3D0/ CPU0 l1d-misses [cpu] CPU4 45,574 l1d-misses [cpu] CPU8 l1d-misses [cpu] CPU0 cpu/cpu=3D8/ CPU4 cpu/cpu=3D8/ CPU8 164,073 cpu/cpu=3D8/ CPU0 1,689,993 cycles CPU4 5,204,403 cycles CPU8 668,986 cycles ``` An example of spreading uncore overhead across two CPUs: ``` $ perf stat -A -e "data_read/cpu=3D0/,data_write/cpu=3D1/" -a sleep 0.1 Performance counter stats for 'system wide': CPU0 223.65 MiB uncore_imc_free_running_0/cpu=3D0/ CPU0 223.66 MiB uncore_imc_free_running_1/cpu=3D0/ CPU0 MiB uncore_imc_free_running_0/cpu=3D1/ CPU1 5.78 MiB uncore_imc_free_running_0/cpu=3D1/ CPU0 MiB uncore_imc_free_running_1/cpu=3D1/ CPU1 5.74 MiB uncore_imc_free_running_1/cpu=3D1/ ``` Note, the event names are missing as there are unmerged uniquify fixes like: https://lore.kernel.org/lkml/20240510053705.2462258-3-irogers@google.com/ Manually fixing the output should be: ``` CPU0 223.65 MiB uncore_imc_free_running_0/data_read,cpu=3D0/ CPU0 223.66 MiB uncore_imc_free_running_1/data_read,cpu=3D0/ CPU1 5.78 MiB uncore_imc_free_running_0/data_write,cpu=3D1/ CPU1 5.74 MiB uncore_imc_free_running_1/data_write,cpu=3D1/ ``` That is data_read from 2 PMUs was read on CPU0 and data_write was read on CPU1. Signed-off-by: Ian Rogers --- tools/perf/Documentation/perf-list.txt | 7 +++ tools/perf/util/evsel_config.h | 1 + tools/perf/util/parse-events.c | 67 ++++++++++++++++++++++---- tools/perf/util/parse-events.h | 3 +- tools/perf/util/parse-events.l | 1 + tools/perf/util/pmu.c | 1 + 6 files changed, 69 insertions(+), 11 deletions(-) diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentat= ion/perf-list.txt index 6bf2468f59d3..abbff01665eb 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -273,6 +273,13 @@ Sums up the event counts for all hardware threads in a= core, e.g.: =20 perf stat -e cpu/event=3D0,umask=3D0x3,percore=3D1/ =20 +cpu: + +Specifies the CPU to open the event upon: + + + perf stat -e data_read/cpu=3D0/,data_write/cpu=3D1/ -a sleep 1 + =20 EVENT GROUPS ------------ diff --git a/tools/perf/util/evsel_config.h b/tools/perf/util/evsel_config.h index aee6f808b512..9630c4a24721 100644 --- a/tools/perf/util/evsel_config.h +++ b/tools/perf/util/evsel_config.h @@ -47,6 +47,7 @@ struct evsel_config_term { u32 aux_sample_size; u64 cfg_chg; char *str; + int cpu; } val; bool weak; }; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 8c0c33361c5e..86d074aa6c9a 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -7,6 +7,7 @@ #include #include #include +#include "cpumap.h" #include "term.h" #include "evlist.h" #include "evsel.h" @@ -177,6 +178,20 @@ static char *get_config_name(const struct parse_events= _terms *head_terms) return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); } =20 +static struct perf_cpu_map *get_config_cpu(const struct parse_events_terms= *head_terms) +{ + struct parse_events_term *term; + + if (!head_terms) + return NULL; + + list_for_each_entry(term, &head_terms->terms, list) + if (term->type_term =3D=3D PARSE_EVENTS__TERM_TYPE_CPU) + return perf_cpu_map__new_int(term->val.num); + + return NULL; +} + /** * fix_raw - For each raw term see if there is an event (aka alias) in pmu= that * matches the raw's string value. If the string value matches an @@ -468,11 +483,12 @@ int parse_events_add_cache(struct list_head *list, in= t *idx, const char *name, bool found_supported =3D false; const char *config_name =3D get_config_name(parsed_terms); const char *metric_id =3D get_config_metric_id(parsed_terms); + struct perf_cpu_map *cpus =3D get_config_cpu(parsed_terms); + int ret =3D 0; =20 while ((pmu =3D perf_pmus__scan(pmu)) !=3D NULL) { LIST_HEAD(config_terms); struct perf_event_attr attr; - int ret; =20 if (parse_events__filter_pmu(parse_state, pmu)) continue; @@ -486,7 +502,7 @@ int parse_events_add_cache(struct list_head *list, int = *idx, const char *name, parsed_terms, perf_pmu__auto_merge_stats(pmu)); if (ret) - return ret; + goto out_err; continue; } =20 @@ -506,20 +522,27 @@ int parse_events_add_cache(struct list_head *list, in= t *idx, const char *name, =20 if (parsed_terms) { if (config_attr(&attr, parsed_terms, parse_state->error, - config_term_common)) - return -EINVAL; - - if (get_config_terms(parsed_terms, &config_terms)) - return -ENOMEM; + config_term_common)) { + ret =3D -EINVAL; + goto out_err; + } + if (get_config_terms(parsed_terms, &config_terms)) { + ret =3D -ENOMEM; + goto out_err; + } } =20 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, metric_id, pmu, &config_terms, /*auto_merge_stats=3D*/false, - /*cpu_list=3D*/NULL) =3D=3D NULL) - return -ENOMEM; + cpus) =3D=3D NULL) + ret =3D -ENOMEM; =20 free_config_terms(&config_terms); + if (ret) + goto out_err; } +out_err: + perf_cpu_map__put(cpus); return found_supported ? 0 : -EINVAL; } =20 @@ -814,6 +837,7 @@ static const char *config_term_name(enum parse_events__= term_type term_type) [PARSE_EVENTS__TERM_TYPE_RAW] =3D "raw", [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] =3D "legacy-cache", [PARSE_EVENTS__TERM_TYPE_HARDWARE] =3D "hardware", + [PARSE_EVENTS__TERM_TYPE_CPU] =3D "cpu", }; if ((unsigned int)term_type >=3D __PARSE_EVENTS__TERM_TYPE_NR) return "unknown term"; @@ -843,6 +867,7 @@ config_term_avail(enum parse_events__term_type term_typ= e, struct parse_events_er case PARSE_EVENTS__TERM_TYPE_METRIC_ID: case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: case PARSE_EVENTS__TERM_TYPE_PERCORE: + case PARSE_EVENTS__TERM_TYPE_CPU: return true; case PARSE_EVENTS__TERM_TYPE_USER: case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: @@ -986,6 +1011,15 @@ do { \ return -EINVAL; } break; + case PARSE_EVENTS__TERM_TYPE_CPU: + CHECK_TYPE_VAL(NUM); + if (term->val.num >=3D (u64)cpu__max_present_cpu().cpu) { + parse_events_error__handle(err, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + break; case PARSE_EVENTS__TERM_TYPE_DRV_CFG: case PARSE_EVENTS__TERM_TYPE_USER: case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: @@ -1112,6 +1146,7 @@ static int config_term_tracepoint(struct perf_event_a= ttr *attr, case PARSE_EVENTS__TERM_TYPE_RAW: case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: case PARSE_EVENTS__TERM_TYPE_HARDWARE: + case PARSE_EVENTS__TERM_TYPE_CPU: default: if (err) { parse_events_error__handle(err, term->err_term, @@ -1243,6 +1278,7 @@ do { \ case PARSE_EVENTS__TERM_TYPE_RAW: case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: case PARSE_EVENTS__TERM_TYPE_HARDWARE: + case PARSE_EVENTS__TERM_TYPE_CPU: default: break; } @@ -1296,6 +1332,7 @@ static int get_config_chgs(struct perf_pmu *pmu, stru= ct parse_events_terms *head case PARSE_EVENTS__TERM_TYPE_RAW: case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: case PARSE_EVENTS__TERM_TYPE_HARDWARE: + case PARSE_EVENTS__TERM_TYPE_CPU: default: break; } @@ -1350,6 +1387,7 @@ static int __parse_events_add_numeric(struct parse_ev= ents_state *parse_state, struct perf_event_attr attr; LIST_HEAD(config_terms); const char *name, *metric_id; + struct perf_cpu_map *cpus; int ret; =20 memset(&attr, 0, sizeof(attr)); @@ -1371,9 +1409,11 @@ static int __parse_events_add_numeric(struct parse_e= vents_state *parse_state, =20 name =3D get_config_name(head_config); metric_id =3D get_config_metric_id(head_config); + cpus =3D get_config_cpu(head_config); ret =3D __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, na= me, metric_id, pmu, &config_terms, /*auto_merge_stats=3D*/false, - /*cpu_list=3D*/NULL) ? 0 : -ENOMEM; + cpus) ? 0 : -ENOMEM; + perf_cpu_map__put(cpus); free_config_terms(&config_terms); return ret; } @@ -1440,6 +1480,7 @@ static int parse_events_add_pmu(struct parse_events_s= tate *parse_state, LIST_HEAD(config_terms); struct parse_events_terms parsed_terms; bool alias_rewrote_terms =3D false; + struct perf_cpu_map *term_cpu =3D NULL; int ret =3D 0; =20 if (verbose > 1) { @@ -1531,6 +1572,12 @@ static int parse_events_add_pmu(struct parse_events_= state *parse_state, goto out_err; } =20 + term_cpu =3D get_config_cpu(&parsed_terms); + if (!perf_cpu_map__is_empty(term_cpu)) { + perf_cpu_map__put(info.cpus); + info.cpus =3D term_cpu; + term_cpu =3D NULL; + } evsel =3D __add_event(list, &parse_state->idx, &attr, /*init_attr=3D*/tru= e, get_config_name(&parsed_terms), get_config_metric_id(&parsed_terms), pmu, diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index e13de2c8b706..b03857499030 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -79,7 +79,8 @@ enum parse_events__term_type { PARSE_EVENTS__TERM_TYPE_RAW, PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE, PARSE_EVENTS__TERM_TYPE_HARDWARE, -#define __PARSE_EVENTS__TERM_TYPE_NR (PARSE_EVENTS__TERM_TYPE_HARDWARE + 1) + PARSE_EVENTS__TERM_TYPE_CPU, +#define __PARSE_EVENTS__TERM_TYPE_NR (PARSE_EVENTS__TERM_TYPE_CPU + 1) }; =20 struct parse_events_term { diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 16045c383ada..e06097a62796 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -330,6 +330,7 @@ percore { return term(yyscanner, PARSE_EVENTS__TERM_T= YPE_PERCORE); } aux-output { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); } aux-sample-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMP= LE_SIZE); } metric-id { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_METRIC_ID); } +cpu { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CPU); } cpu-cycles|cycles { return hw_term(yyscanner, PERF_COUNT_HW_CPU_CYCLES)= ; } stalled-cycles-frontend|idle-cycles-frontend { return hw_term(yyscanner, P= ERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } stalled-cycles-backend|idle-cycles-backend { return hw_term(yyscanner, PER= F_COUNT_HW_STALLED_CYCLES_BACKEND); } diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 280b2499c861..27e2ff23799e 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1767,6 +1767,7 @@ int perf_pmu__for_each_format(struct perf_pmu *pmu, v= oid *state, pmu_format_call "percore", "aux-output", "aux-sample-size=3Dnumber", + "cpu=3Dnumber", }; struct perf_pmu_format *format; int ret; --=20 2.45.2.1089.g2a221341d9-goog