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

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Subject: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch
From: Andrew Morton (akpm_AT_osdl.org)
Date: Sun Jul 11 2004 - 12:58:55 EEST

Ingo Molnar <mingo_AT_elte.hu> wrote:
>
>
> * Andrew Morton <akpm_AT_osdl.org> wrote:
>
> > Ingo Molnar <mingo_AT_elte.hu> wrote:
> > >
> > > For all the
> > > other 200 might_sleep() points it doesnt matter much.
> >
> > Sorry, but an additional 100 might_sleep()s is surely excessive for
> > debugging purposes, and unneeded for latency purposes: all these sites
> > are preemptible anyway.
>
> nono, i mean the existing ones. (it's 116 not 200) There's no plan to
> add another 100, you've seen all the ones we found to be necessary for
> this.
>

OK, but most of the new ones are unneeded with CONFIG_PREEMPT=y. I'm still
failing to see why a non-preempt, voluntary preemption kernel even needs to
try to be competitive with a preemptible kernel?

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