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perf_counter tools: Provide helper to print percents color

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Among perf annotate, perf report and perf top, we can find the
common colored printing of percents according to the following
rules:

    High overhead =  > 5%, colored in red
    Mid overhead =  > 0.5%, colored in green
    Low overhead =  < 0.5%, default color

Factorize these multiple checks in a single function named
percent_color_fprintf() and also provide a get_percent_color()
for sites which print percentages and other things at the same
time.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1246558475-10624-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker
2009-07-02 20:14:34 +02:00
committed by Ingo Molnar
parent c20ab37ef3
commit 1e11fd82d2
5 changed files with 38 additions and 56 deletions
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21
tools/perf/builtin-report.c
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@@ -947,25 +947,10 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
if (exclude_other && !self->parent)
return 0;
if (total_samples) {
double percent = self->count * 100.0 / total_samples;
char *color = PERF_COLOR_NORMAL;
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
*/
if (percent >= 5.0) {
color = PERF_COLOR_RED;
} else {
if (percent >= 0.5)
color = PERF_COLOR_GREEN;
}
ret = color_fprintf(fp, color, " %6.2f%%",
if (total_samples)
ret = percent_color_fprintf(fp, " %6.2f%%",
(self->count * 100.0) / total_samples);
} else
else
ret = fprintf(fp, "%12Ld ", self->count);
list_for_each_entry(se, &hist_entry__sort_list, list) {