diff options
author | Ian Rogers <irogers@google.com> | 2023-08-23 21:13:19 -0700 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-08-24 11:00:09 -0300 |
commit | e3edd6cf6399f17114081d0e20f31ddadafb70b5 (patch) | |
tree | ccff8d4bda9776d1dec664ff73e6c75ccaf2116f /tools/perf/pmu-events | |
parent | c4ac7f7542e7bc958453f8fdcb528348308539dc (diff) |
perf pmu-events: Reduce processed events by passing PMU
Pass the PMU to pmu_events_table__for_each_event so that entries that
don't match don't need to be processed by callback.
If a NULL PMU is passed then all PMUs are processed.
'perf bench internals pmu-scan's "Average PMU scanning" performance is
reduced by about 5% on an Intel tigerlake.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Gaosheng Cui <cuigaosheng1@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230824041330.266337-8-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/pmu-events')
-rw-r--r-- | tools/perf/pmu-events/empty-pmu-events.c | 15 | ||||
-rwxr-xr-x | tools/perf/pmu-events/jevents.py | 18 | ||||
-rw-r--r-- | tools/perf/pmu-events/pmu-events.h | 4 |
3 files changed, 26 insertions, 11 deletions
diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c index 807f2e55c17c..2d6f748280ac 100644 --- a/tools/perf/pmu-events/empty-pmu-events.c +++ b/tools/perf/pmu-events/empty-pmu-events.c @@ -266,12 +266,16 @@ static const struct pmu_sys_events pmu_sys_event_tables[] = { }, }; -int pmu_events_table__for_each_event(const struct pmu_events_table *table, pmu_event_iter_fn fn, - void *data) +int pmu_events_table__for_each_event(const struct pmu_events_table *table, struct perf_pmu *pmu, + pmu_event_iter_fn fn, void *data) { for (const struct pmu_event *pe = &table->entries[0]; pe->name; pe++) { - int ret = fn(pe, table, data); + int ret; + if (pmu && !pmu__name_match(pmu, pe->pmu)) + continue; + + ret = fn(pe, table, data); if (ret) return ret; } @@ -371,7 +375,8 @@ const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data) { for (const struct pmu_events_map *tables = &pmu_events_map[0]; tables->arch; tables++) { - int ret = pmu_events_table__for_each_event(&tables->event_table, fn, data); + int ret = pmu_events_table__for_each_event(&tables->event_table, + /*pmu=*/ NULL, fn, data); if (ret) return ret; @@ -408,7 +413,7 @@ int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data) for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0]; tables->name; tables++) { - int ret = pmu_events_table__for_each_event(&tables->table, fn, data); + int ret = pmu_events_table__for_each_event(&tables->table, /*pmu=*/ NULL, fn, data); if (ret) return ret; diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py index 1ad20140114c..396af53e0e45 100755 --- a/tools/perf/pmu-events/jevents.py +++ b/tools/perf/pmu-events/jevents.py @@ -826,14 +826,20 @@ static int pmu_events_table__for_each_event_pmu(const struct pmu_events_table *t } int pmu_events_table__for_each_event(const struct pmu_events_table *table, + struct perf_pmu *pmu, pmu_event_iter_fn fn, void *data) { for (size_t i = 0; i < table->num_pmus; i++) { - int ret = pmu_events_table__for_each_event_pmu(table, &table->pmus[i], - fn, data); + const struct pmu_table_entry *table_pmu = &table->pmus[i]; + const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset]; + int ret; - if (ret) + if (pmu && !pmu__name_match(pmu, pmu_name)) + continue; + + ret = pmu_events_table__for_each_event_pmu(table, table_pmu, fn, data); + if (pmu || ret) return ret; } return 0; @@ -955,7 +961,8 @@ int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data) for (const struct pmu_events_map *tables = &pmu_events_map[0]; tables->arch; tables++) { - int ret = pmu_events_table__for_each_event(&tables->event_table, fn, data); + int ret = pmu_events_table__for_each_event(&tables->event_table, + /*pmu=*/ NULL, fn, data); if (ret) return ret; @@ -992,7 +999,8 @@ int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data) for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0]; tables->name; tables++) { - int ret = pmu_events_table__for_each_event(&tables->event_table, fn, data); + int ret = pmu_events_table__for_each_event(&tables->event_table, + /*pmu=*/ NULL, fn, data); if (ret) return ret; diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h index 6557381b7de1..c0303ba42e97 100644 --- a/tools/perf/pmu-events/pmu-events.h +++ b/tools/perf/pmu-events/pmu-events.h @@ -77,7 +77,9 @@ typedef int (*pmu_metric_iter_fn)(const struct pmu_metric *pm, const struct pmu_metrics_table *table, void *data); -int pmu_events_table__for_each_event(const struct pmu_events_table *table, pmu_event_iter_fn fn, +int pmu_events_table__for_each_event(const struct pmu_events_table *table, + struct perf_pmu *pmu, + pmu_event_iter_fn fn, void *data); int pmu_metrics_table__for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn, void *data); |