From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Lin Ming <ming.m.lin@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH -tip/master] x86,perf: p4_pmu_schedule_events -- use smp_processor_id
Date: Sun, 16 May 2010 01:45:52 +0400 [thread overview]
Message-ID: <20100515214552.GA26557@lenovo> (raw)
This snippet somehow escaped the commit
| commit 137351e0feeb9f25d99488ee1afc1c79f5499a9a
| Author: Cyrill Gorcunov <gorcunov@openvz.org>
| Date: Sat May 8 15:25:52 2010 +0400
|
| x86, perf: P4 PMU -- protect sensible procedures from preemption
so make it eventually. In short -- it helps to catch preemption issue.
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---
arch/x86/kernel/cpu/perf_event_p4.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event_p4.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perf_event_p4.c
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event_p4.c
@@ -762,7 +762,7 @@ static int p4_pmu_schedule_events(struct
{
unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
unsigned long escr_mask[BITS_TO_LONGS(P4_ESCR_MSR_TABLE_SIZE)];
- int cpu = raw_smp_processor_id();
+ int cpu = smp_processor_id();
struct hw_perf_event *hwc;
struct p4_event_bind *bind;
unsigned int i, thread, num;
reply other threads:[~2010-05-15 21:46 UTC|newest]
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