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[PATCH] i386: Don't touch per cpu memory of offline CPUs in touch_nmi_watchdog

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Just like on x86-64, don't touch foreign CPUs' memory if the watchdog
isn't enabled at all.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Jan Beulich 2006-12-07 02:14:09 +01:00 committed by Andi Kleen
parent b0bfece40b
commit c6ea396de6
1 changed files with 9 additions and 7 deletions
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16
arch/i386/kernel/nmi.c
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@ -870,14 +870,16 @@ static unsigned int
void touch_nmi_watchdog (void) void touch_nmi_watchdog (void)
{ {
int i; if (nmi_watchdog > 0) {
unsigned cpu;
/* /*
* Just reset the alert counters, (other CPUs might be * Just reset the alert counters, (other CPUs might be
* spinning on locks we hold): * spinning on locks we hold):
*/ */
for_each_possible_cpu(i) for_each_present_cpu (cpu)
alert_counter[i] = 0; alert_counter[cpu] = 0;
}
/* /*
* Tickle the softlockup detector too: * Tickle the softlockup detector too: