Date: Sat, 24 Jan 2004 22:46:38 +0100 From: Stefan Ehmann <shoesoft@gmx.net> To: Don Lewis <truckman@FreeBSD.org> Cc: mat@cnd.mcgill.ca Subject: Re: write(2) lc_r problem Message-ID: <1074980798.705.3.camel@shoeserv.freebsd> In-Reply-To: <200401242118.i0OLI47E073265@gw.catspoiler.org> References: <200401242118.i0OLI47E073265@gw.catspoiler.org>
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On Sat, 2004-01-24 at 22:18, Don Lewis wrote: > On 24 Jan, Stefan Ehmann wrote: > > On Sat, 2004-01-24 at 21:03, Mathew Kanner wrote: > >> On Jan 24, Stefan Ehmann wrote: > >> > On Sat, 2004-01-24 at 20:15, Mathew Kanner wrote: > >> > > There is definetly a bug with the sound code when using vchans > >> > > and select. Make sure that (using sysctl) > >> > > > >> > > hw.snd.maxautovchans=0 > >> > > hw.snd.pcmX.vchans=0 > >> > > >> > You're right, that fixed it. That's also the reason why it worked on > >> > stable (vchans was disabled there). > >> > >> Please try this untested patch with vchans enabled. > >> > > > > Great, now it also works with vchans enabled. > > > > I'm also testing a pcm patch by truckman@ at the moment. Unfortunately > > those two combined don't run nicely. > > > > Panicstring: mutex pcm0:virtual:0 not owned at /usr/src/sys/dev/sound/pcm/channel.c:90 > > Uncomment the CHN_LOCKASSERT(c) in chn_wakeup, and bracket the > chn_wakeup() call in the SLIST_FOREACH() loop with > CHN_LOCK(pce->channel); > CHN_UNLOCK(pce->channel); > Thanks, that fixed it. Now the two patches play nicely together.
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