diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2012-10-23 13:40:14 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-26 11:22:25 -0200 |
| commit | 1f16c5754d3a4008c29f3bf67b4f1271313ba385 (patch) | |
| tree | 365f7e0630b149593d81f56edc5b3f34cf2a3081 /tools/perf/Documentation | |
| parent | 54a3cf59b53b3f01989a28344ecf4cb68217a6f6 (diff) | |
perf stat: Add --pre and --post command
In order to measure kernel builds, one has to do some pre/post cleanup
work in order to do the repeat build.
So provide --pre and --post command hooks to allow doing just that.
perf stat --repeat 10 --null --sync --pre 'make -s O=defconfig-build/clean' \
-- make -s -j64 O=defconfig-build/ bzImage
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Stephane Eranian <eranian@gmail.com>
Link: http://lkml.kernel.org/r/1350992414.13456.5.camel@twins
[ committer note: Added respective entries in Documentation/perf-stat.txt ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-stat.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index 2fa173b5197..cf0c3107e06 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -108,6 +108,11 @@ with it. --append may be used here. Examples: 3>results perf stat --log-fd 3 -- $cmd 3>>results perf stat --log-fd 3 --append -- $cmd +--pre:: +--post:: + Pre and post measurement hooks, e.g.: + +perf stat --repeat 10 --null --sync --pre 'make -s O=defconfig-build/clean' -- make -s -j64 O=defconfig-build/ bzImage EXAMPLES |