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| author |   Shunsuke Nakamura <nakamura.shun@fujitsu.com> | 2021-11-09 17:58:29 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-12-07 22:18:23 -0300 |
| commit | 9a5b2d1afa9f888335ab63e922ba5eed31383020 (patch) | |
| tree | 90f12741b3ab98649cf7fb147163cfe65d3e48d8 /tools/lib/perf/evsel.c | |
| parent | tools build: Enable warnings through HOSTCFLAGS (diff) | |
| download | wireguard-linux-9a5b2d1afa9f888335ab63e922ba5eed31383020.tar.xz wireguard-linux-9a5b2d1afa9f888335ab63e922ba5eed31383020.zip | |
libperf: Adopt perf_counts_values__scale() from tools/perf/util
Move perf_counts_values__scale() from tools/perf/util to tools/lib/perf
so that it can be used with libperf.
Committer notes:
As noted by Jiri, use __s8 instead of s8 on the exported function.
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211109085831.3770594-2-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/perf/evsel.c')
| -rw-r--r-- | tools/lib/perf/evsel.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c index 8441e3e1aaac..68f83d2c27c1 100644 --- a/tools/lib/perf/evsel.c +++ b/tools/lib/perf/evsel.c @@ -431,3 +431,22 @@ void perf_evsel__free_id(struct perf_evsel *evsel) zfree(&evsel->id); evsel->ids = 0; } + +void perf_counts_values__scale(struct perf_counts_values *count, + bool scale, __s8 *pscaled) +{ + s8 scaled = 0; + + if (scale) { + if (count->run == 0) { + scaled = -1; + count->val = 0; + } else if (count->run < count->ena) { + scaled = 1; + count->val = (u64)((double)count->val * count->ena / count->run); + } + } + + if (pscaled) + *pscaled = scaled; +} |