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| author | Kan Liang <kan.liang@linux.intel.com> | 2023-10-25 13:16:25 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-11-06 18:15:16 -0300 |
| commit | ac9cd7245fffa0fc053afce3b345469e5afa533a (patch) | |
| tree | 6cf6267835be9e6f27491893b7f7a06132624b42 /tools/perf/util/env.h | |
| parent | 76db7aab1fca6688ddf9f388157521c442e0ffb8 (diff) | |
| download | linux-stable-ac9cd7245fffa0fc053afce3b345469e5afa533a.tar.gz linux-stable-ac9cd7245fffa0fc053afce3b345469e5afa533a.tar.bz2 linux-stable-ac9cd7245fffa0fc053afce3b345469e5afa533a.zip | |
perf header: Support num and width of branch counters
To support the branch counters feature, the information of the maximum
number of supported counters and the width of the counters is exposed in
the sysfs caps folder. The perf tool can use the information to parse
the logged counters in each branch.
Store the information in the perf_env for later usage.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tinghao Zhang <tinghao.zhang@intel.com>
Link: https://lore.kernel.org/r/20231025201626.3000228-7-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/env.h')
| -rw-r--r-- | tools/perf/util/env.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index 4566c51f2fd9..48d7f8759a2a 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -46,6 +46,9 @@ struct hybrid_node { struct pmu_caps { int nr_caps; unsigned int max_branches; + unsigned int br_cntr_nr; + unsigned int br_cntr_width; + char **caps; char *pmu_name; }; @@ -62,6 +65,8 @@ struct perf_env { unsigned long long total_mem; unsigned int msr_pmu_type; unsigned int max_branches; + unsigned int br_cntr_nr; + unsigned int br_cntr_width; int kernel_is_64_bit; int nr_cmdline; |