Prev: umh && creds: kill sub_info->cred
Next: [tip:perf/core] perf_event: Fix preempt warning in perf_clock()
From: Peter Zijlstra on 26 Feb 2010 10:40

A recent commit introduced a preemption warning for perf_clock(), use
raw_smp_processor_id() to avoid this, it really doesn't matter which cpu
we use here.

Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl>
CC: stable(a)kernel.org
LKML-Reference: <new-submission>
---
Index: linux-2.6/kernel/perf_event.c
===================================================================
--- linux-2.6.orig/kernel/perf_event.c
+++ linux-2.6/kernel/perf_event.c
@@ -249,7 +249,7 @@ static void perf_unpin_context(struct pe

static inline u64 perf_clock(void)
{
- return cpu_clock(smp_processor_id());
+ return cpu_clock(raw_smp_processor_id());
}

/*


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: umh && creds: kill sub_info->cred
Next: [tip:perf/core] perf_event: Fix preempt warning in perf_clock()