From: Taeung Song <treeze.taeung@gmail.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Wang Nan <wangnan0@huawei.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Taeung Song <treeze.taeung@gmail.com>,
Jiri Olsa <jolsa@redhat.com>
Subject: [PATCH v3 3/3] perf annotate: Fix missing number of samples
Date: Mon, 27 Mar 2017 16:10:38 +0900 [thread overview]
Message-ID: <1490598638-13947-4-git-send-email-treeze.taeung@gmail.com> (raw)
In-Reply-To: <1490598638-13947-1-git-send-email-treeze.taeung@gmail.com>
If running 'perf annotate --stdio -l --show-total-period',
you can see a problem showing only zero '0' for number of samples.
Before:
$ perf annotate --stdio -l --show-total-period
...
0 : 400816: push %rbp
0 : 400817: mov %rsp,%rbp
0 : 40081a: mov %edi,-0x24(%rbp)
0 : 40081d: mov %rsi,-0x30(%rbp)
0 : 400821: mov -0x24(%rbp),%eax
0 : 400824: mov -0x30(%rbp),%rdx
0 : 400828: mov (%rdx),%esi
0 : 40082a: mov $0x0,%edx
...
The reason is number of samples aren't set
in symbol__get_source_line(). so set it ordinarily.
After:
$ perf annotate --stdio -l --show-total-period
...
3 : 400816: push %rbp
4 : 400817: mov %rsp,%rbp
0 : 40081a: mov %edi,-0x24(%rbp)
0 : 40081d: mov %rsi,-0x30(%rbp)
1 : 400821: mov -0x24(%rbp),%eax
2 : 400824: mov -0x30(%rbp),%rdx
0 : 400828: mov (%rdx),%esi
1 : 40082a: mov $0x0,%edx
...
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
tools/perf/util/annotate.c | 6 ++++--
tools/perf/util/annotate.h | 2 +-
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 11af5f0..a37032b 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1665,7 +1665,7 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
start = map__rip_2objdump(map, sym->start);
for (i = 0; i < len; i++) {
- u64 offset;
+ u64 offset, nr_samples;
double percent_max = 0.0;
src_line->nr_pcnt = nr_pcnt;
@@ -1674,12 +1674,14 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
double percent = 0.0;
h = annotation__histogram(notes, evidx + k);
+ nr_samples = h->addr[i];
if (h->sum)
- percent = 100.0 * h->addr[i] / h->sum;
+ percent = 100.0 * nr_samples / h->sum;
if (percent > percent_max)
percent_max = percent;
src_line->samples[k].percent = percent;
+ src_line->samples[k].nr = nr_samples;
}
if (percent_max <= 0.5)
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 09776b5..948aa8e 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -98,7 +98,7 @@ struct cyc_hist {
struct source_line_samples {
double percent;
double percent_sum;
- double nr;
+ u64 nr;
};
struct source_line {
--
2.7.4
next prev parent reply other threads:[~2017-03-27 7:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-27 7:10 [PATCH v3 0/3] perf annotate: Simple bugfixes Taeung Song
2017-03-27 7:10 ` [PATCH v3 1/3] perf annotate: Fix a bug reading link name from a build-id file Taeung Song
2017-03-27 18:01 ` Arnaldo Carvalho de Melo
2017-03-28 11:54 ` Taeung Song
2017-03-28 5:55 ` [tip:perf/core] perf annotate: Fix a bug following symbolic link of " tip-bot for Taeung Song
2017-03-27 7:10 ` [PATCH v3 2/3] perf annotate: Fix a bug of division by zero when calculating percent Taeung Song
2017-03-28 5:55 ` [tip:perf/core] " tip-bot for Taeung Song
2017-03-27 7:10 ` Taeung Song [this message]
2017-03-27 18:26 ` [PATCH v3 3/3] perf annotate: Fix missing number of samples Arnaldo Carvalho de Melo
2017-03-28 12:09 ` Taeung Song
2017-03-28 14:38 ` Taeung Song
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