diff options
| author | Ian Rogers <irogers@google.com> | 2023-08-23 21:13:25 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-08-24 11:08:47 -0300 |
| commit | e6ff1eed3584362dcf5ffb6b9daf497183b4d3a8 (patch) | |
| tree | 29819cdefc880a4073488fda221e9328cbf4e124 /tools/perf/tests | |
| parent | 7c52f10c0d4d8db86ef94b40446efbe291d067dc (diff) | |
perf pmu: Lazily add JSON events
Rather than scanning all JSON events and adding them when a PMU is
created, add the alias when the JSON event is needed.
Average core PMU scanning run time reduced by 60.2%. Average PMU
scanning run time reduced by 15%. Page faults with no events reduced by
74 page faults, 4% of total.
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/20230824041330.266337-14-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 4fcb84fd1f65..9ac893ae5f0d 100644 --- a/tools/perf/tests/pmu-events.c +++ b/tools/perf/tests/pmu-events.c @@ -546,6 +546,7 @@ 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; res = pmu_events_table__find_event(table, pmu, "bp_l1_btb_correct", NULL, NULL); if (res != 0) { @@ -586,6 +587,7 @@ static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) return -1; pmu->events_table = events_table; pmu_add_cpu_aliases_table(pmu, events_table); + pmu->cpu_aliases_added = true; pmu_add_sys_aliases(pmu); /* Count how many aliases we generated */ |