Commit-ID: 9b0d2fb86d4737b2cda39bc9c9a8e368cec38960
Gitweb: http://git.kernel.org/tip/9b0d2fb86d4737b2cda39bc9c9a8e368cec38960
Author: Namhyung Kim <[email protected]>
AuthorDate: Mon, 3 Mar 2014 10:14:02 +0900
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Fri, 14 Mar 2014 18:08:37 -0300
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 <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link:
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/ui/hist.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 78f4c92..6094562 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;
--
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