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nmi_watchdog: Tell the world we're active

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Because I was wondering why perf stat wasn't working as expected..

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Don Zickus <dzickus@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Peter Zijlstra 2010-03-02 14:20:14 +01:00 • committed by Ingo Molnar
parent c99c30fead
commit 5671a10e2b
1 changed files with 2 additions and 0 deletions
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kernel/nmi_watchdog.c
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@ -244,6 +244,8 @@ static int __init spawn_nmi_watchdog_task(void)
if (nonmi_watchdog)
return 0;
printk(KERN_INFO "NMI watchdog enabled, takes one hw-pmu counter.\n");
err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
if (err == NOTIFY_BAD) {
BUG();