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authorPeter Zijlstra <peterz@infradead.org>2012-10-23 13:40:14 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-10-26 15:22:25 +0200
commit1f16c5754d3a4008c29f3bf67b4f1271313ba385 (patch)
tree365f7e0630b149593d81f56edc5b3f34cf2a3081 /tools/perf/Documentation
parentperf inject: Mark a dso if it's used (diff)
downloadlinux-1f16c5754d3a4008c29f3bf67b4f1271313ba385.tar.xz
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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.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 2fa173b51970..cf0c3107e06e 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