From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: mingo@elte.hu, paulus@samba.org
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 3/4] perf_counter: x86: fix 32bit irq_period assumption.
Date: Tue, 10 Mar 2009 15:19:16 +0100 [thread overview]
Message-ID: <20090310142015.848870770@chello.nl> (raw)
In-Reply-To: 20090310141913.961861111@chello.nl
[-- Attachment #1: perf_counter-x86.patch --]
[-- Type: text/plain, Size: 666 bytes --]
No need to assume the irq_period is 32bit.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
arch/x86/kernel/cpu/perf_counter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/arch/x86/kernel/cpu/perf_counter.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/perf_counter.c
+++ linux-2.6/arch/x86/kernel/cpu/perf_counter.c
@@ -449,7 +449,7 @@ __hw_perf_counter_set_period(struct perf
struct hw_perf_counter *hwc, int idx)
{
s64 left = atomic64_read(&hwc->period_left);
- s32 period = hwc->irq_period;
+ s64 period = hwc->irq_period;
int err;
/*
--
next prev parent reply other threads:[~2009-03-10 14:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-10 14:19 [PATCH 0/4] generic software counters Peter Zijlstra
2009-03-10 14:19 ` [PATCH 1/4] perf_counter: software counter event infrastructure Peter Zijlstra
2009-03-10 14:19 ` [PATCH 2/4] perf_counter: provide pagefault software events Peter Zijlstra
2009-03-10 14:59 ` Ingo Molnar
2009-03-10 15:06 ` Peter Zijlstra
2009-03-10 14:19 ` Peter Zijlstra [this message]
2009-03-10 14:19 ` [PATCH 4/4] perf_counter: use list_move_tail Peter Zijlstra
2009-03-10 14:35 ` [PATCH 0/4] generic software counters Peter Zijlstra
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