diff options
| author | Ian Rogers <irogers@google.com> | 2023-08-23 21:13:28 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-08-24 11:10:27 -0300 |
| commit | 8d4b6d37ea7862d230ad2e1bd4c7d2ff5e9acd53 (patch) | |
| tree | c39d7ee6301ac6dc5690b89f2e00b124eee33362 /tools/perf/tests | |
| parent | 7b723dbb96e85a63a8f01e2b3fdfb76aa5d418a8 (diff) | |
perf pmu: Lazily load sysfs aliases
Don't load sysfs aliases for a PMU when the PMU is first created, defer
until an alias needs to be found. For the pmu-scan benchmark, average
core PMU scanning is reduced by 30.8%, and average PMU scanning by
12.6%.
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/20230824041330.266337-17-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests')
| -rw-r--r-- | tools/perf/tests/pmu-events.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c index 9ac893ae5f0d..3dc1ebee4d9f 100644 --- a/tools/perf/tests/pmu-events.c +++ b/tools/perf/tests/pmu-events.c @@ -547,6 +547,7 @@ static int __test_core_pmu_event_aliases(char *pmu_name, int *count) pmu->events_table = table; pmu_add_cpu_aliases_table(pmu, table); pmu->cpu_aliases_added = true; + pmu->sysfs_aliases_loaded = true; res = pmu_events_table__find_event(table, pmu, "bp_l1_btb_correct", NULL, NULL); if (res != 0) { @@ -588,6 +589,7 @@ static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) pmu->events_table = events_table; pmu_add_cpu_aliases_table(pmu, events_table); pmu->cpu_aliases_added = true; + pmu->sysfs_aliases_loaded = true; pmu_add_sys_aliases(pmu); /* Count how many aliases we generated */ |