Subject: [linux-audio-dev] Re: [Alsa-devel] RFC: Preemption on interrupt in Linux kernel
From: Takashi Iwai (tiwai_AT_suse.de)
Date: Wed Dec 12 2001 - 12:19:17 EET
At Tue, 11 Dec 2001 17:34:34 -0500,
Paul Davis wrote:
>
> >I'm thinking for the benefits that low latency audio applications will
> >have from preemption of running task in favour of the waiting task just
> >at end of interrupt handler execution (instead of end of time slice).
> >
> >I don't believe that such a mechanism is already in place in linux
> >kernel but I may be wrong.
>
> i think that there is such code in the LL patches. the return to user
> space codepath does a conditional_schedule() there. i think. if not,
> it was a feature of ingo's original LL patch series.
As far as looking at the code, Andrew's patch doesn't include this
feature. It was only in Ingo's.
Takashi
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