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| author | Jin Yao <yao.jin@linux.intel.com> | 2019-03-05 16:05:42 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-03-07 00:05:21 +0300 |
| commit | daca23b2007595b6a48255ca08c763f56050d1c5 (patch) | |
| tree | ae8ef6d1a59f558901c0cba4928f66306e2dce0b /tools/perf/Documentation | |
| parent | 4802138d78caed36cee2a859f77fb2035f230018 (diff) | |
| download | linux-daca23b2007595b6a48255ca08c763f56050d1c5.tar.xz | |
perf diff: Support --cpu filter option
To improve 'perf diff', implement a --cpu filter option.
Multiple CPUs can be provided as a comma-separated list with no space:
0,1. Ranges of CPUs are specified with -: 0-2. Default is to report
samples on all CPUs.
For example,
perf diff --cpu 0,1
It only diff the samples for CPU0 and CPU1.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1551791143-10334-3-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index 036d65bded51..8c2c229faf50 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -163,6 +163,11 @@ OPTIONS the end of perf.data.old and analyzes the perf.data from the timestamp 3971.150589 to the end of perf.data. +--cpu:: Only diff samples for the list of CPUs provided. Multiple CPUs can + be provided as a comma-separated list with no space: 0,1. Ranges of + CPUs are specified with -: 0-2. Default is to report samples on all + CPUs. + COMPARISON ---------- The comparison is governed by the baseline file. The baseline perf.data |