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x86: Don't send RESCHEDULE_VECTOR to offlined cpus

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In the x86 native_smp_send_reschedule_function(), don't send the IPI if the
cpu has gone offline already. Warn nevertheless!!

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Gautham R Shenoy
2008-03-10 17:44:03 +05:30
committed by Ingo Molnar
parent 12db648c15
commit f694010185
1 changed files with 4 additions and 1 deletions
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5
arch/x86/kernel/smp.c
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@@ -118,7 +118,10 @@
*/ */
static void native_smp_send_reschedule(int cpu) static void native_smp_send_reschedule(int cpu)
{ {
WARN_ON(cpu_is_offline(cpu)); if (unlikely(cpu_is_offline(cpu))) {
WARN_ON(1);
return;
}
send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR); send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
} }