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From: Tim Blechmann <tim@klingt.org>
To: linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
	Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH] perf stat: add branch performance counters to default
Date: Mon, 19 Oct 2009 12:03:33 +0200	[thread overview]
Message-ID: <4ADC3975.8050109@klingt.org> (raw)


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not sure, whether there is any reason, why the branch performance
counters are not enabled by default.
personally, i would find it quite useful, though

--

this patch adds performance counter information about branches and
branch misses to the default output of perf stat.

Signed-off-by: Tim Blechmann <tim@klingt.org>
---
 tools/perf/builtin-stat.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)



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diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index e874ad4..671bfaa 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -57,6 +57,8 @@ static struct perf_counter_attr default_attrs[] = {
   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS	},
   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES},
   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES	},
+  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS},
+  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES	},
 
 };
 


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             reply	other threads:[~2009-10-19 10:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-19 10:03 Tim Blechmann [this message]
2009-10-19 11:23 ` Ingo Molnar
2009-10-19 11:43   ` Ingo Molnar
2009-10-19 11:47 ` [tip:perf/core] perf stat: Add branch performance events to default output tip-bot for Tim Blechmann
2009-10-19 11:47 ` [tip:perf/core] perf stat: Re-align the default_attrs[] array tip-bot for Ingo Molnar
2009-10-19 11:47 ` [tip:perf/core] perf stat: Count branches first tip-bot for Ingo Molnar

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