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Subject: Re: [patch] voluntary-preempt-2.6.8-rc2-L2, preemptable hardirqs
From: Lee Revell <rlrevell@joe-job.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
       William Lee Irwin III <wli@holomorphy.com>,
       Lenar L?hmus <lenar@vision.ee>, Andrew Morton <akpm@osdl.org>,
       Arjan van de Ven <arjanv@redhat.com>
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On Wed, 2004-07-28 at 00:59, Ingo Molnar wrote:
> * Lee Revell <rlrevell@joe-job.com> wrote:
> 
> > The obvious next feature to add would be to make certain IRQs
> > non-schedulable, like you would for an RT system.  For an audio system
> > this would be just the soundcard interrupt (and timer as stated
> > above).  Then, while it still might not be hard-RT, it would blow away
> > anything achievable on the other OS'es people do audio work with.
> 
> yes, this is the next step. Does v=3 work on your system? (even if the
> delaying of the soundcard irq causes latencies.)
> 

Yes, it works well, except for this behavior which is as expected.  I
will test making this interrupt 'direct' tomorrow, it is not shared with
anything too heavy.

Lee