linux-kernel - [tip:perfcounters/core] perf_counter: x86: fix 32-bit irq

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Message-ID: <tip-c1c159de20d96a5505dfc0337ca7169a088ebd64@git.kernel.org>
Date:	Fri, 13 Mar 2009 13:06:25 GMT
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: x86: fix 32-bit irq_period assumption

Commit-ID:  c1c159de20d96a5505dfc0337ca7169a088ebd64
Gitweb:     http://git.kernel.org/tip/c1c159de20d96a5505dfc0337ca7169a088ebd64
Author:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Fri, 13 Mar 2009 12:21:28 +0100
Commit:     Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 13 Mar 2009 14:02:42 +0100

perf_counter: x86: fix 32-bit irq_period assumption

No need to assume the irq_period is 32bit.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
LKML-Reference: <20090313112301.188032328@...llo.nl>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/cpu/perf_counter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 155bc3c..1cedc34 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -449,7 +449,7 @@ __hw_perf_counter_set_period(struct perf_counter *counter,
 			     struct hw_perf_counter *hwc, int idx)
 {
 	s64 left = atomic64_read(&hwc->period_left);
-	s32 period = hwc->irq_period;
+	s64 period = hwc->irq_period;
 	int err;
 
 	/*
--
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