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Message-ID: <20110811120626.5900.88562.stgit@linux3>
Date: Thu, 11 Aug 2011 21:06:26 +0900
From: Akihiro Nagai <akihiro.nagai.hw@...achi.com>
To: Arnaldo Carvalho de Melo <acme@...radead.org>,
Ingo Molnar <mingo@...e.hu>,
Peter Zijlstra <peterz@...radead.org>,
Frederic Weisbecker <fweisbec@...il.com>,
David Ahern <dsahern@...il.com>
Cc: linux-kernel@...r.kernel.org,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
yrl.pp-manager.tt@...achi.com,
Akihiro Nagai <akihiro.nagai.hw@...achi.com>,
Peter Zijlstra <peterz@...radead.org>,
Frederic Weisbecker <fweisbec@...il.com>,
Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
Arnaldo Carvalho de Melo <acme@...radead.org>,
David Ahern <dsahern@...il.com>,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: [PATCH -tip v3 3/5] perf script: enhance IP and ADDR correlate
detection for BTS
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@...achi.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Arnaldo Carvalho de Melo <acme@...radead.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.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 b3312ff..aeec5bc 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -309,6 +309,12 @@ 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;
}
--
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