Messages in this thread Patch in this message | | | Date | Mon, 10 Mar 2008 17:44:03 +0530 | From | Gautham R Shenoy <> | Subject | [PATCH] x86: Don't send RESCHEDULE_VECTOR to offlined cpus |
| |
x86: Don't send RESCHEDULE_VECTOR to offlined cpus. From: Gautham R Shenoy <ego@in.ibm.com>
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> ---
arch/x86/kernel/smp_32.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/smp_32.c b/arch/x86/kernel/smp_32.c index dc0cde9..4df9042 100644 --- a/arch/x86/kernel/smp_32.c +++ b/arch/x86/kernel/smp_32.c @@ -472,7 +472,10 @@ void flush_tlb_all(void) */ 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); } -- Thanks and Regards gautham
| |