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x86: Don't send RESCHEDULE_VECTOR to offlined cpus
author
Gautham R Shenoy
<ego@in.ibm.com>
Mon, 10 Mar 2008 12:14:03 +0000
(17:44 +0530)
committer
Ingo Molnar
<mingo@elte.hu>
Thu, 17 Apr 2008 15:40:58 +0000
(17:40 +0200)
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>
arch/x86/kernel/smp.c
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diff --git
a/arch/x86/kernel/smp.c
b/arch/x86/kernel/smp.c
index
88c1e51
..
16c52aa
100644
(file)
--- a/
arch/x86/kernel/smp.c
+++ b/
arch/x86/kernel/smp.c
@@
-118,7
+118,10
@@
*/
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);
}