Date: Wed, 2 Oct 2002 09:53:45 +0200 From: Michael Hostbaek <mich@freebsdcluster.org> To: Rasmus Skaarup <mfbsd@skaarup.org> Cc: freebsd-current@freebsd.org Subject: Re: could sleep with messages Message-ID: <20021002075345.GC17620@mich2.itxmarket.com> In-Reply-To: <20021002003038.J62700-100000@alfred.skaarup.org> References: <20021002003038.J62700-100000@alfred.skaarup.org>
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Rasmus Skaarup (mfbsd) writes:
>
>
> I've been getting the following messages for quite some time, during
> boot and when using the pcm device:
>
> ...
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "pcm0:play:0" locked
[...]
> ...
>
> Is anyone interesting in getting more details?
>
This is a well known problem. It is basically a diagnostic message
telling you that there's a deficiency in the pcm driver.
If you want to fix it permanently I suggest that you go and have a look
at dev/sound/pcm/sound.c:134 and look for a way of invoking UMA without
holding the lock.
A possible workaround, is to try and disable INVARIANTS and WITNESS in
the your kernel conf. and hope it won't turn into a real problem (fx.
panic.)
--
Best Regards,
Michael Landin Hostbaek
FreeBSDCluster.org - an International Community
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