Re: [PATCHSET] timer: clean up initializers and implement irqsafetimers

[Tejun Heo]

Hello,

On Wed, Aug 08, 2012 at 11:10:24AM -0700, Tejun Heo wrote:
> Timer internals are protected by irqsafe lock but the lock is
> naturally dropped and irq enabled while a timer is executed.  This
> makes dequeueing timer for execution and the actual execution
> non-atomic against IRQs.  No matter what the timer function does, IRQs
> can occur between timer dispatch and execution.  This means that an
> IRQ handler could interrupt any timer in progress and it's impossible
> for an IRQ handler to cancel and drain a timer.

If nobody objects, I'll route this through wq/for-3.7 together with
"workqueue: use irqsafe timer in delayed_work" patchset.  If you
object, please scream.

Thanks.

-- 
tejun
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