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perf hist: Count the total cycles of all samples

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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
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2
tools/perf/builtin-report.c
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@@ -292,7 +292,7 @@ static int process_sample_event(struct perf_tool *tool,
if (ui__has_annotation() || rep->symbol_ipc) {
hist__account_cycles(sample->branch_stack, &al, sample,
rep->nonany_branch_mode);
rep->nonany_branch_mode, NULL);
}
ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);