From: Valentine <vbarshak@ru•mvista.com>
To: linuxppc-dev@ozlabs•org
Subject: Re: [PATCH] powerpc: stop_this_cpu: remove the cpu from the online map.
Date: Tue, 08 Dec 2009 00:58:00 +0300 [thread overview]
Message-ID: <4B1D7A68.5000309@ru.mvista.com> (raw)
In-Reply-To: <20091125214852.GA7912@ru.mvista.com>
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@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)
> ;
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists•ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
prev parent reply other threads:[~2009-12-07 21:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-25 21:48 [PATCH] powerpc: stop_this_cpu: remove the cpu from the online map Valentine Barshak
2009-12-07 21:58 ` Valentine [this message]
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