linux-kernel - [PATCH] perf_counter: Fix atomic_set vs. atomic64

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Date:	Sat, 13 Jun 2009 17:06:50 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] 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>
---
 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();
 		}
-- 
1.6.0.4

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