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| author | Jin Yao <yao.jin@linux.intel.com> | 2021-05-14 14:29:47 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-17 15:55:10 +0200 |
| commit | f7d74ce32fc1b9b3cbf58c015009d1f616e60c23 (patch) | |
| tree | c1cf448b3a33bab5d2da68e7678faea9ac5dfbe7 /tools/perf/util/pmu-hybrid.h | |
| parent | perf cs-etm: Set time on synthesised samples to preserve ordering (diff) | |
| download | linux-f7d74ce32fc1b9b3cbf58c015009d1f616e60c23.tar.xz linux-f7d74ce32fc1b9b3cbf58c015009d1f616e60c23.zip | |
perf header: Support HYBRID_TOPOLOGY feature
It is useful to let the user know about the hybrid topology.
Add the HYBRID_TOPOLOGY feature in header to indicate the core CPUs
and the atom CPUs.
With this patch a perf.data generated on a hybrid platform reports
the hybrid CPU list:
root@otcpl-adl-s-2:~# perf report --header-only -I
...
# hybrid cpu system:
# cpu_core cpu list : 0-15
# cpu_atom cpu list : 16-23
For a perf.data generated on a non-hybrid platform, reports a message
that HYBRID_TOPOLOGY is missing:
root@kbl-ppc:~# perf report --header-only -I
...
# missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED CLOCK_DATA HYBRID_TOPOLOGY
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210514122948.9472-2-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/pmu-hybrid.h')
| -rw-r--r-- | tools/perf/util/pmu-hybrid.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/util/pmu-hybrid.h b/tools/perf/util/pmu-hybrid.h index d0fa7bc50a76..2b186c26a43e 100644 --- a/tools/perf/util/pmu-hybrid.h +++ b/tools/perf/util/pmu-hybrid.h @@ -19,4 +19,15 @@ struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name); bool perf_pmu__is_hybrid(const char *name); char *perf_pmu__hybrid_type_to_pmu(const char *type); +static inline int perf_pmu__hybrid_pmu_num(void) +{ + struct perf_pmu *pmu; + int num = 0; + + perf_pmu__for_each_hybrid_pmu(pmu) + num++; + + return num; +} + #endif /* __PMU_HYBRID_H */ |