From: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
To: Arnaldo Carvalho de Melo <acme@infradead.org>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
David Ahern <dsahern@gmail.com>
Cc: linux-kernel@vger.kernel.org,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
yrl.pp-manager.tt@hitachi.com,
Akihiro Nagai <akihiro.nagai.hw@hitachi.com>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
David Ahern <dsahern@gmail.com>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Subject: [PATCH -tip v4 3/5] perf script: enhance IP and ADDR correlate detection for BTS
Date: Mon, 16 Jan 2012 14:22:22 +0900 [thread overview]
Message-ID: <20120116052222.2485.53573.stgit@linux3> (raw)
In-Reply-To: <20120116052146.2485.48349.stgit@linux3>
BTS records branch_from_addr and branch_to_addr in IP and ADDR field in perf_sample.
This patch detects this correlation in perf-script.
# perf script -f ip,addr,dso,sym
3f03e016b0 _start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e016b0 _start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04b80 _dl_start (/lib64/ld-2.14.so) 3f03e016b3 _start (/lib64/ld-2.14.so)
3f03e04b80 _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04ba6 _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04bad _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04c1d _dl_start (/lib64/ld-2.14.so) 3f03e04bfb _dl_start (/lib64/ld-2.14.so)
[snip]
Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
---
tools/perf/builtin-script.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 11859eb..360a4da 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -312,6 +312,12 @@ static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
return true;
+ /* BTS Events */
+ if ((attr->type == PERF_TYPE_HARDWARE) &&
+ (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
+ (attr->sample_period == 1))
+ return true;
+
return false;
}
next prev parent reply other threads:[~2012-01-16 5:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-16 5:21 [PATCH -tip v4 0/5] perf script: add BTS analysis features Akihiro Nagai
2012-01-16 5:22 ` [PATCH -tip v4 1/5] perf-script: unify the expressions indicate "unknown" Akihiro Nagai
2012-01-17 15:37 ` David Ahern
2012-01-17 15:49 ` Arnaldo Carvalho de Melo
2012-01-18 4:43 ` Akihiro Nagai
2012-01-18 4:47 ` David Ahern
2012-01-19 8:05 ` Akihiro Nagai
2012-01-16 5:22 ` [PATCH -tip v4 2/5] perf: set correct value to perf_event_header.misc for BTS Akihiro Nagai
2012-01-16 5:22 ` Akihiro Nagai [this message]
2012-01-16 5:22 ` [PATCH -tip v4 4/5] perf script: add the offset field specifier Akihiro Nagai
2012-01-17 16:04 ` David Ahern
2012-01-16 5:22 ` [PATCH -tip v4 5/5] perf script: add option resolving vmlinux path Akihiro Nagai
2012-01-18 11:48 ` [PATCH -tip v4 0/5] perf script: add BTS analysis features Frederic Weisbecker
2012-01-20 7:59 ` Akihiro Nagai
2012-01-20 13:38 ` Frederic Weisbecker
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