GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

perf hist: Count the total cycles of all samples

Browse source 
We can get the per sample cycles by hist__account_cycles(). It's also
useful to know the total cycles of all samples in order to get the
cycles coverage for a single program block in further. For example:

  coverage = per block sampled cycles / total sampled cycles

This patch creates a new argument 'total_cycles' in hist__account_cycles(),
which will be added with the cycles of each sample.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-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://lore.kernel.org/lkml/20191107074719.26139-4-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2019-11-07 15:47:15 +08:00 • committed by Arnaldo Carvalho de Melo
parent 6041441870
commit 7841f40aed
6 changed files with 13 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

3
tools/perf/builtin-diff.c
View file

@ -426,7 +426,8 @@ static int diff__process_sample_event(struct perf_tool *tool,
goto out_put;
}
hist__account_cycles(sample->branch_stack, &al, sample, false);
hist__account_cycles(sample->branch_stack, &al, sample, false,
NULL);
}
/*