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| author | Zhengjun Xing <zhengjun.xing@linux.intel.com> | 2022-04-22 14:56:35 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-04-24 07:50:18 -0300 |
| commit | d7e3c397087fffde68389e7530093dbc2b70c48a (patch) | |
| tree | 3c61b4931c55a4dc8688ee4ec9ad42f420f7e397 /tools/perf/util/stat.c | |
| parent | 2c8e64514aa2ea414c8ada6c77405680267d0ab3 (diff) | |
| download | linux-d7e3c397087fffde68389e7530093dbc2b70c48a.tar.gz linux-d7e3c397087fffde68389e7530093dbc2b70c48a.tar.bz2 linux-d7e3c397087fffde68389e7530093dbc2b70c48a.zip | |
perf stat: Support hybrid --topdown option
Since for cpu_core or cpu_atom, they have different topdown events
groups.
For cpu_core, --topdown equals to:
"{slots,cpu_core/topdown-retiring/,cpu_core/topdown-bad-spec/,
cpu_core/topdown-fe-bound/,cpu_core/topdown-be-bound/,
cpu_core/topdown-heavy-ops/,cpu_core/topdown-br-mispredict/,
cpu_core/topdown-fetch-lat/,cpu_core/topdown-mem-bound/}"
For cpu_atom, --topdown equals to:
"{cpu_atom/topdown-retiring/,cpu_atom/topdown-bad-spec/,
cpu_atom/topdown-fe-bound/,cpu_atom/topdown-be-bound/}"
To simplify the implementation, on hybrid, --topdown is used
together with --cputype. If without --cputype, it uses cpu_core
topdown events by default.
# ./perf stat --topdown -a sleep 1
WARNING: default to use cpu_core topdown events
Performance counter stats for 'system wide':
retiring bad speculation frontend bound backend bound heavy operations light operations branch mispredict machine clears fetch latency fetch bandwidth memory bound Core bound
4.1% 0.0% 5.1% 90.8% 2.3% 1.8% 0.0% 0.0% 4.2% 0.9% 9.9% 81.0%
1.002624229 seconds time elapsed
# ./perf stat --topdown -a --cputype atom sleep 1
Performance counter stats for 'system wide':
retiring bad speculation frontend bound backend bound
13.5% 0.1% 31.2% 55.2%
1.002366987 seconds time elapsed
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220422065635.767648-3-zhengjun.xing@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/stat.c')
| -rw-r--r-- | tools/perf/util/stat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index ee6f03481215..924183df3da2 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -116,7 +116,9 @@ static void perf_stat_evsel_id_init(struct evsel *evsel) /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */ for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) { - if (!strcmp(evsel__name(evsel), id_str[i])) { + if (!strcmp(evsel__name(evsel), id_str[i]) || + (strstr(evsel__name(evsel), id_str[i]) && evsel->pmu_name + && strstr(evsel__name(evsel), evsel->pmu_name))) { ps->id = i; break; } |