Subject: Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch
From: Eric St-Laurent (ericstl34_AT_sympatico.ca)
Date: Fri Jul 30 2004 - 05:23:05 EEST
On Wed, 2004-07-28 at 02:45, Ingo Molnar wrote:
> i'd agree with turning most of the finegrained per-task (non-irq-safe)
> spinlocks into mutexes (or spin-mutexes). But the central locks that an
> RT task would likely hit need to remain spinlocks i believe.
>
> plus there are central mutexes too that are in 'hiding' currently but
> could cause latencies just as much.
Here are patches that convert spinlocks into kernel mutexes with
priority inheritance. They look reasonably clean, and might be
interesting to try.
http://inf3-www.informatik.unibw-muenchen.de/research/linux/mutex/mutex.html
Best regards,
Eric St-Laurent
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