Re: Scheduler broken? sdhci issues with scheduling

From: Pavel Machek
Date: Mon Mar 03 2008 - 15:37:55 EST


On Mon 2008-03-03 20:43:00, Pierre Ossman wrote:
> On Sun, 2 Mar 2008 11:40:31 +0100
> Pavel Machek <pavel@xxxxxx> wrote:
>
> >
> > Is mmc slow or does it just break down? Slow would be expected, but
> > breaking down should be fixed in MMC, too...
> >
>
> The problem is that the kernel sleeps _less_ than asked for, not more. No hardware can be expected to work if its needed delays aren't respected.
>

Oops, that's bad. Can you perhaps create small testcase for
scheduler/timer people to play with?

Also... you may want to switch timesources. notsc fixed "wait for much
too long" for me.
Pavel
--
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