From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com,
kan.liang@intel.com, yao.jin@intel.com,
Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH] perf annotate: Display multiple events for --stdio
Date: Wed, 9 May 2018 23:57:15 +0800 [thread overview]
Message-ID: <1525881435-4092-1-git-send-email-yao.jin@linux.intel.com> (raw)
When we perform following command lines:
perf record -e "{cycles,branches}" ./div
perf annotate main --stdio
Only shows one event "cycles" and the displaying format is not correct.
Percent | Source code & Disassembly of div for cycles (44550 samples)
-----------------------------------------------------------------------------------
:
:
:
: Disassembly of section .text:
:
: 00000000004004b0 <main>:
: main():
:
: return i;
: }
:
: int main(void)
: {
0.00 : 4004b0: push %rbx
: int i;
: int flag;
: volatile double x = 1212121212, y = 121212;
:
: s_randseed = time(0);
0.00 : 4004b1: xor %edi,%edi
: srand(s_randseed);
0.00 : 4004b3: mov $0x77359400,%ebx
:
: return i;
: }
:
The issue is the value of nr_percent is hardcoded to 1.
This patch fixes it.
With this patch, the output is:
Percent | Source code & Disassembly of div for cycles (44550 samples)
-----------------------------------------------------------------------------------
:
:
:
: Disassembly of section .text:
:
: 00000000004004b0 <main>:
: main():
:
: return i;
: }
:
: int main(void)
: {
0.00 0.00 : 4004b0: push %rbx
: int i;
: int flag;
: volatile double x = 1212121212, y = 121212;
:
: s_randseed = time(0);
0.00 0.00 : 4004b1: xor %edi,%edi
: srand(s_randseed);
0.00 0.00 : 4004b3: mov $0x77359400,%ebx
:
: return i;
: }
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/util/annotate.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 536ee14..5d74a30 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1263,6 +1263,9 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
max_percent = sample->percent;
}
+ if (al->samples_nr > nr_percent)
+ nr_percent = al->samples_nr;
+
if (max_percent < min_pcnt)
return -1;
--
2.7.4
next reply other threads:[~2018-05-09 8:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-09 15:57 Jin Yao [this message]
2018-05-09 16:42 ` Arnaldo Carvalho de Melo
2018-05-09 17:24 ` Arnaldo Carvalho de Melo
2018-05-10 0:49 ` Jin, Yao
2018-05-10 0:29 ` Jin, Yao
2018-05-15 6:40 ` [tip:perf/urgent] perf annotate: Display all available events on --stdio tip-bot for Jin Yao
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