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| author | Namhyung Kim <namhyung@kernel.org> | 2020-03-25 15:45:35 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-04-03 15:37:55 +0300 |
| commit | f382842fa0244ae1e2c28c8377732c85ec1fe7a9 (patch) | |
| tree | d6dac14e00fb8f337ca04fc3b2e90c6c71eb5e1c /tools/perf/Documentation/perf-top.txt | |
| parent | 8fb4b67939e169fca68174e9ac7be79fe9a04498 (diff) | |
| download | linux-f382842fa0244ae1e2c28c8377732c85ec1fe7a9.tar.xz | |
perf top: Add --all-cgroups option
The --all-cgroups option is to enable cgroup profiling support. It
tells kernel to record CGROUP events in the ring buffer so that 'perf
top' can identify task/cgroup association later.
Committer testing:
Use:
# perf top --all-cgroups -s cgroup_id,cgroup,pid
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200325124536.2800725-9-namhyung@kernel.org
Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org
[ Extracted the HAVE_FILE_HANDLE from the followup patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-top.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-top.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 324b6b53c86b..ddab103af8c7 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -272,6 +272,10 @@ Default is to monitor all CPUS. Record events of type PERF_RECORD_NAMESPACES and display it with the 'cgroup_id' sort key. +--all-cgroups:: + Record events of type PERF_RECORD_CGROUP and display it with the + 'cgroup' sort key. + --switch-on EVENT_NAME:: Only consider events after this event is found. |