[PATCH] powerpc: stop_this_cpu: remove the cpu from the online map.
Valentine
vbarshak at ru.mvista.com
Tue Dec 8 08:58:00 EST 2009
Ben, is this OK?
Other architectures do the same thing.
Thanks,
Val.
Valentine Barshak wrote:
> 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 at ru.mvista.com>
> ---
> arch/powerpc/kernel/smp.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff -pruN linux-2.6.orig/arch/powerpc/kernel/smp.c linux-2.6/arch/powerpc/kernel/smp.c
> --- linux-2.6.orig/arch/powerpc/kernel/smp.c 2009-11-26 00:22:15.000000000 +0300
> +++ linux-2.6/arch/powerpc/kernel/smp.c 2009-11-26 00:26:48.000000000 +0300
> @@ -218,6 +218,9 @@ void crash_send_ipi(void (*crash_ipi_cal
>
> static void stop_this_cpu(void *dummy)
> {
> + /* Remove this CPU */
> + set_cpu_online(smp_processor_id(), false);
> +
> local_irq_disable();
> while (1)
> ;
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