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perf_counter: call atomic64_set for counter->count 

A compile warning triggered because we are calling
atomic_set(&counter->count). But since counter->count
is an atomic64_t, we have to use atomic64_set.

So the count can be set short, resulting in the reset ioctl
only resetting the low word.

[ Impact: clear counter properly during the reset ioctl ]

Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <18951.48285.270311.981806@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paul Mackerras 2009-05-11 15:50:21 +10:00 committed by Ingo Molnar
parent a08b159fc2
commit 615a3f1e05
1 changed files with 1 additions and 1 deletions
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2
kernel/perf_counter.c
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@ -1281,7 +1281,7 @@ static unsigned int perf_poll(struct file *file, poll_table *wait)
static void perf_counter_reset(struct perf_counter *counter)
{
(void)perf_counter_read(counter);
atomic_set(&counter->count, 0);
atomic64_set(&counter->count, 0);
perf_counter_update_userpage(counter);
}