diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2014-03-03 05:14:02 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-03-15 01:08:37 +0400 |
| commit | 9b0d2fb86d4737b2cda39bc9c9a8e368cec38960 (patch) | |
| tree | 39cc9a8c5bb62be8740cd42c52b408d9fa2ac6f4 /tools/perf/ui/hist.c | |
| parent | bfd66cc71a3f831ba7c2116d79416cfb8883f6cf (diff) | |
| download | linux-9b0d2fb86d4737b2cda39bc9c9a8e368cec38960.tar.xz | |
perf ui/stdio: Fix invalid output on event group report
When some of group member has 0 overhead, it printed previous percentage
instead of 0.00%. It's because passing integer 0 as a percent rather
than double 0.0 so the remaining bits came from garbage. The TUI and
GTK don't have this problem since they pass 0.0.
Before:
# Samples: 845 of event 'anon group { cycles, cache-references, cache-misses }'
# Event count (approx.): 174775051
#
# Overhead Samples
# ........................ ....................................
#
20.32% 8.58% 73.51% 45 30 138
6.87% 6.87% 6.87% 21 0 0
5.29% 0.31% 0.31% 10 1 0
1.89% 1.89% 1.89% 6 0 0
1.76% 1.76% 1.76% 2 0 0
After:
# Overhead Samples
# ........................ ....................................
#
20.32% 8.58% 73.51% 45 30 138
6.87% 0.00% 0.00% 21 0 0
5.29% 0.31% 0.00% 10 1 0
1.89% 0.00% 0.00% 6 0 0
1.76% 0.00% 0.00% 2 0 0
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1393809254-4480-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/ui/hist.c')
| -rw-r--r-- | tools/perf/ui/hist.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index 78f4c92e9b73..6094562c9523 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -52,8 +52,15 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, * zero-fill group members in the middle which * have no sample */ - ret += print_fn(hpp->buf + ret, hpp->size - ret, - fmt, 0); + if (fmt_percent) { + ret += print_fn(hpp->buf + ret, + hpp->size - ret, + fmt, 0.0); + } else { + ret += print_fn(hpp->buf + ret, + hpp->size - ret, + fmt, 0ULL); + } } if (fmt_percent) @@ -72,8 +79,13 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, /* * zero-fill group members at last which have no sample */ - ret += print_fn(hpp->buf + ret, hpp->size - ret, - fmt, 0); + if (fmt_percent) { + ret += print_fn(hpp->buf + ret, hpp->size - ret, + fmt, 0.0); + } else { + ret += print_fn(hpp->buf + ret, hpp->size - ret, + fmt, 0ULL); + } } } return ret; |