linux-kernel - [GIT PULL] perf callchain fixlet

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Date:	Mon,  3 Jan 2011 18:45:02 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Nick Piggin <npiggin@...nel.dk>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Paul Mackerras <paulus@...ba.org>
Subject: [GIT PULL] perf callchain fixlet

Ingo,

Please pull the perf/urgent branch that can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
	perf/urgent
	
If you think it's too late to get that into .37, I can still
rebase it to perf/core (or you can cherry-pick that patch
directly).

Thanks,
	Frederic
---

Frederic Weisbecker (1):
      perf: Fix callchain hit bad cast on ascii display


 tools/perf/util/hist.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

---
commit d425de5436a620de506f9e4119bf8daa1cb93718
Author: Frederic Weisbecker <fweisbec@...il.com>
Date:   Mon Jan 3 16:13:11 2011 +0100

    perf: Fix callchain hit bad cast on ascii display
    
    ipchain__fprintf_graph() casts the number of hits in a branch as an
    int, which means we lose its highests bits.
    
    This results in meaningless number of callchain hits in perf.data
    that have a high number of hits recorded, typically those that have
    callchain branches hits appearing more than INT_MAX. This happens
    easily as those are pondered by the event period.
    
    Reported-by: Nick Piggin <npiggin@...nel.dk>
    Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
    Cc: Ingo Molnar <mingo@...e.hu>
    Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
    Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
    Cc: Paul Mackerras <paulus@...ba.org>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 2022e87..76bcc35 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -356,7 +356,7 @@ static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
 
 static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain,
 				     int depth, int depth_mask, int period,
-				     u64 total_samples, int hits,
+				     u64 total_samples, u64 hits,
 				     int left_margin)
 {
 	int i;
--
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