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powerpc: stop_this_cpu: remove the cpu from the online map.

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Remove the CPU from the online map to prevent smp_call_function
from sending messages to a stopped CPU.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Valentine Barshak 2009-11-25 11:48:52 +00:00 committed by Benjamin Herrenschmidt
parent 1a8061c46c
commit 8389b37dff
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/kernel/smp.c
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@ -218,6 +218,9 @@ void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
static void stop_this_cpu(void *dummy)
{
/* Remove this CPU */
set_cpu_online(smp_processor_id(), false);
local_irq_disable();
while (1)
;