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| author |  Ian Rogers <irogers@google.com>
| 2023-06-22 21:38:42 -0700 |
|---|---|---|
| committer |  Namhyung Kim <namhyung@kernel.org>
| 2023-06-22 22:14:35 -0700 |
| commit | d685819b40affd39d2fbc937e93b2eee7fc63dd5 (patch) | |
| tree | c70c383d890332d5f3be929091f87452b3e117fb /tools/perf/util/pmus.h | |
| parent | perf unwind: Fix map reference counts (diff) | |
| download | linux-d685819b40affd39d2fbc937e93b2eee7fc63dd5.tar.gz linux-d685819b40affd39d2fbc937e93b2eee7fc63dd5.tar.bz2 linux-d685819b40affd39d2fbc937e93b2eee7fc63dd5.zip | |
perf pmus: Add notion of default PMU for JSON events
JSON events created in pmu-events.c by jevents.py may not specify a
PMU they are associated with, in which case it is implied that it is
the first core PMU. Care is needed to select this for regular 'cpu',
s390 'cpum_cf' and ARMs many names as at the point the name is first
needed the core PMUs list hasn't been initialized. Add a helper in
perf_pmus to create this value, in the worst case by scanning sysfs.
v2. Add missing close if fdopendir fails.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: James Clark <james.clark@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20230623043843.4080180-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/util/pmus.h')
| -rw-r--r-- | tools/perf/util/pmus.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/pmus.h b/tools/perf/util/pmus.h index d02ffea5d3a4..a21464432d0f 100644 --- a/tools/perf/util/pmus.h +++ b/tools/perf/util/pmus.h @@ -20,5 +20,6 @@ void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *p bool perf_pmus__have_event(const char *pname, const char *name); int perf_pmus__num_core_pmus(void); bool perf_pmus__supports_extended_type(void); +char *perf_pmus__default_pmu_name(void); #endif /* __PMUS_H */ |