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| author | Ian Rogers <irogers@google.com> | 2024-04-16 20:00:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-12 12:12:20 +0300 |
| commit | e61cb35f56f9bc5ac760801426a275f100af943f (patch) | |
| tree | 13debf9b5c98571f50bea6c0238126a3b9138699 /tools/perf | |
| parent | 0688c4f7c5e8a5b69b29a1c157a268137e27a111 (diff) | |
| download | linux-e61cb35f56f9bc5ac760801426a275f100af943f.tar.xz | |
perf docs: Document bpf event modifier
[ Upstream commit eb4d27cf9aef3e6c9bcaf8fa1a1cadc2433d847b ]
Document that 'b' is used as a modifier to make an event use a BPF
counter.
Fixes: 01bd8efcec444468 ("perf stat: Introduce ':b' modifier")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
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: Song Liu <song@kernel.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20240416170014.985191-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-list.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt index d5f78e125efe..69c6d5e46ad8 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -67,6 +67,7 @@ counted. The following modifiers exist: D - pin the event to the PMU W - group is weak and will fallback to non-group if not schedulable, e - group or event are exclusive and do not share the PMU + b - use BPF aggregration (see perf stat --bpf-counters) The 'p' modifier can be used for specifying how precise the instruction address should be. The 'p' modifier can be specified multiple times: |