Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch

Scott Wood
2004-07-21T18:38:05Z

On Wed, Jul 21, 2004 at 09:32:46PM +1000, Nick Piggin wrote:
> What do you think about deferring softirqs just while in critical
> sections?
>
> I'm not sure how well this works, and it is CONFIG_PREEMPT only
> but in theory it should prevent unbounded softirqs while under
> locks without taking the performance hit of doing the context
> switch.

You're still running do_softirq() with preemption disabled, which is
almost as bad as doing it under a lock.

-Scott