| Date | Mon, 18 Feb 2013 14:07:12 +0100 | From | Jesper Nilsson <> | Subject | Re: [PATCH v6 33/46] cris/smp: Use get/put_online_cpus_atomic() to prevent CPU offline |
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On Mon, Feb 18, 2013 at 06:12:54PM +0530, Srivatsa S. Bhat wrote: > Once stop_machine() is gone from the CPU offline path, we won't be able to > depend on preempt_disable() or local_irq_disable() to prevent CPUs from > going offline from under us. > > Use the get/put_online_cpus_atomic() APIs to prevent CPUs from going offline, > while invoking from atomic context. > > Cc: Mikael Starvik <starvik@axis.com>
> Cc: linux-cris-kernel@axis.com > Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
/^JN - Jesper Nilsson -- Jesper Nilsson -- jesper.nilsson@axis.com
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