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Date: Tue, 13 Jul 2004 11:21:43 +0200
Message-ID: <s5hekngb6u0.wl@alsa2.suse.de>
From: Takashi Iwai <tiwai@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: Lee Revell <rlrevell@joe-job.com>, linux-audio-dev@music.columbia.edu,
       mingo@elte.hu, arjanv@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch
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At Tue, 13 Jul 2004 02:00:25 -0700,
Andrew Morton wrote:
> 
> Lee Revell <rlrevell@joe-job.com> wrote:
> >
> >  Here are some more.  These result from using mplayer with ALSA OSS
> >  emulation:
> > 
> >  Jul 13 04:31:49 mindpipe kernel:
> >  Jul 13 04:31:49 mindpipe kernel: ALSA /usr/src/alsa-cvs-1.0.5/alsa-driver/alsa-kernel/core/pcm_lib.c:169: XRUN: pcmC0D0p
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+1387264/5353478] snd_pcm_period_elapsed+0x2ca/0x410 [snd_pcm]
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+1455070/5353478] snd_emu10k1_interrupt+0x3c8/0x480 [snd_emu10k1]
> >  Jul 13 04:31:49 mindpipe kernel:  [handle_IRQ_event+49/96] handle_IRQ_event+0x31/0x60
> >  Jul 13 04:31:49 mindpipe kernel:  [do_IRQ+155/352] do_IRQ+0x9b/0x160
> >  Jul 13 04:31:49 mindpipe kernel:  [common_interrupt+24/32] common_interrupt+0x18/0x20
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+1394929/5353478] snd_pcm_format_set_silence+0x4b/0x1d0 [snd_pcm]
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+2165815/5353478] snd_pcm_oss_change_params+0x5a1/0x850 [snd_pcm_oss]
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+2166620/5353478] snd_pcm_oss_get_active_substream+0x76/0x90 [snd_pcm_oss]
> >  Jul 13 04:31:49 mindpipe kernel:  [__crc_totalram_pages+2170556/5353478] snd_pcm_oss_get_formats+0x26/0x100 [snd_pcm_oss]
> 
> Looks like those memcpys in snd_pcm_format_set_silence() are hurting.

Hmm, but it's not in lock at least...


Takashi