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x86, mce: don't restart timer if disabled

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Even it is in error path unlikely taken, add_timer_on() at
CPU_DOWN_FAILED* needs to be skipped if mce_timer is disabled.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: <stable@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Hidetoshi Seto 2009-12-03 11:33:08 +09:00 committed by H. Peter Anvin
parent b8b7d791a8
commit fe5ed91ddc
1 changed files with 4 additions and 2 deletions
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6
arch/x86/kernel/cpu/mcheck/mce.c
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@ -1991,9 +1991,11 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
break;
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
t->expires = round_jiffies(jiffies +
if (!mce_ignore_ce && check_interval) {
t->expires = round_jiffies(jiffies +
__get_cpu_var(mce_next_interval));
add_timer_on(t, cpu);
add_timer_on(t, cpu);
}
smp_call_function_single(cpu, mce_reenable_cpu, &action, 1);
break;
case CPU_POST_DEAD: