[PATCH v6 33/46] cris/smp: Use get/put_online_cpus_atomic() to prevent CPU offline
From: jesper.nilsson@axis.com (Jesper Nilsson)
Date: 2013-02-18 13:07:19
Also in:
linux-arch, linux-pm, linuxppc-dev, lkml, netdev
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 <redacted>
Cc: linux-cris-kernel at axis.com Signed-off-by: Srivatsa S. Bhat <redacted>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
/^JN - Jesper Nilsson
--
Jesper Nilsson -- jesper.nilsson at axis.com