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| author |   Jiri Olsa <jolsa@redhat.com> | 2017-02-17 18:00:18 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-17 17:32:38 -0300 |
| commit | 483635a9d0802d5ffbe402ceac5b93ddb2acb138 (patch) | |
| tree | f192a482f84b1abe879c110f8509a20a72edce22 /tools/perf/Documentation/perf-record.txt | |
| parent | perf stat: Add -a as default target (diff) | |
| download | linux-dev-483635a9d0802d5ffbe402ceac5b93ddb2acb138.tar.xz linux-dev-483635a9d0802d5ffbe402ceac5b93ddb2acb138.zip | |
perf record: Add -a as default target
Running 'perf record' with no target (-a, -p, -t, etc) will now collect
system wide data.
Commiter notes:
Testing it:
[root@jouet ~]# perf record
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.351 MB perf.data (366 samples) ]
#
is equivalent to:
# perf record -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.411 MB perf.data (978 samples) ]
#
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170217170018.GA15389@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 27256bc68eda..b16003ec14a7 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -157,7 +157,7 @@ OPTIONS -a:: --all-cpus:: - System-wide collection from all CPUs. + System-wide collection from all CPUs (default if no target is specified). -p:: --pid=:: |