perf report: Add --percentage option
The --percentage option is for controlling overhead percentage
displayed. It can only receive either of "relative" or "absolute".
"relative" means it's relative to filtered entries only so that the
sum of shown entries will be always 100%. "absolute" means it retains
the original value before and after the filter is applied.
$ perf report -s comm
# Overhead Command
# ........ ............
#
74.19% cc1
7.61% gcc
6.11% as
4.35% sh
4.14% make
1.13% fixdep
...
$ perf report -s comm -c cc1,gcc --percentage absolute
# Overhead Command
# ........ ............
#
74.19% cc1
7.61% gcc
$ perf report -s comm -c cc1,gcc --percentage relative
# Overhead Command
# ........ ............
#
90.69% cc1
9.31% gcc
Note that it has zero effect if no filter was applied.
Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1397145720-8063-3-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 0f403b83..0912805 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -32,10 +32,10 @@
if (fmt_percent) {
double percent = 0.0;
+ u64 total = hists__total_period(hists);
- if (hists->stats.total_period)
- percent = 100.0 * get_field(he) /
- hists->stats.total_period;
+ if (total)
+ percent = 100.0 * get_field(he) / total;
ret += hpp__call_print_fn(hpp, print_fn, fmt, percent);
} else
@@ -50,7 +50,7 @@
list_for_each_entry(pair, &he->pairs.head, pairs.node) {
u64 period = get_field(pair);
- u64 total = pair->hists->stats.total_period;
+ u64 total = hists__total_period(pair->hists);
if (!total)
continue;