linux-kernel - [tip:perfcounters/core] perf_counter: Fix atomic_set vs. atomic64

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Message-ID: <tip-87847b8f26cc7176ec9b239898dc7ce47a94e1a6@git.kernel.org>
Date:	Sat, 13 Jun 2009 14:48:57 GMT
From:	tip-bot for Paul Mackerras <paulus@...ba.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulus@...ba.org, hpa@...or.com,
	mingo@...hat.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: Fix atomic_set vs. atomic64_t type mismatch

Commit-ID:  87847b8f26cc7176ec9b239898dc7ce47a94e1a6
Gitweb:     http://git.kernel.org/tip/87847b8f26cc7176ec9b239898dc7ce47a94e1a6
Author:     Paul Mackerras <paulus@...ba.org>
AuthorDate: Sat, 13 Jun 2009 17:06:50 +1000
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sat, 13 Jun 2009 12:58:24 +0200

perf_counter: Fix atomic_set vs. atomic64_t type mismatch

Using atomic_set on an atomic64_t variable gives a compiler
warning on powerpc, and won't give the desired result at runtime.
This fixes an instance of this error in the perf_counter code.

Signed-off-by: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
LKML-Reference: <18995.20490.979429.244883@...go.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


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

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 29b685f..8d14a73 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -1283,7 +1283,7 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
 		if (!interrupts) {
 			perf_disable();
 			counter->pmu->disable(counter);
-			atomic_set(&hwc->period_left, 0);
+			atomic64_set(&hwc->period_left, 0);
 			counter->pmu->enable(counter);
 			perf_enable();
 		}
--
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