5.2-RELEASE TODO

[Munehiro Matsuda]

From: Peter Schultz <pmes at bis.midco.net>
Date: Mon, 15 Dec 2003 09:47:58 -0600
::Robert Watson wrote:
::> Testing focuses for 5.2-RELEASE
::> 
::>  +---------------------------------------------------------------------------+
::>  |    Issue     |   Status    |Responsible|           Description            |
::>  |--------------+-------------+-----------+----------------------------------|
::>  |              |             |           |The PCM audio framework and device|
::>  |              |             |           |drivers have been locked and free |
::>  |PCM locking   |             |           |of Giant for quite a while, but   |
::>  |and           |Needs testing|--         |LOR problems persist along with   |
::>  |performance   |             |           |reports of poor audio performance |
::>  |issues        |             |           |under load. These problems are    |
::>  |              |             |           |believed to have been corrected,  |
::>  |              |             |           |but more testing is desired.      |
::>  |--------------+-------------+-----------+----------------------------------|
:: >
::This longstanding problem has now been fixed as far as I'm concerned. 
::Xmms hasn't played mp3s without a hicup for me on -CURRENT since at 
::least a year, if not two or more.  It's been so long I can't recall.
::
::I'm testing with a soundblaster live! value card:
::pcm0: <Creative EMU10K1> port 0xef20-0xef3f irq 17 at device 17.0 on pci0
::pcm0: <SigmaTel STAC9721/23 AC97 Codec>
::
::I'm running a -CURRENT SMP kernel on a Tyan S1832DL w/dual PII 350s.  I 
::only assume it's working with 5.2 RC1.
::
::Pete...

Hi,

I still get LOR with my sound card and some hicup under disk load, with
today's 5.2-CURRENT. It's a UP system with following sound card.

pcm0: <Yamaha DS-1E (YMF744)> port 0xfcac-0xfcaf,0xfc00-0xfc3f mem 0xfecf0000-0xfecf7fff irq 9 at device 9.0 on pci0
pcm0: <Asahi Kasei AK4543 AC97 Codec>

Also, here's hand written LOR message:

lock order reversal
 1st 0xc3405440 pcm0 (sound softc) @ dev/sound/pci/ds1.c:734
 2nd 0xc3405080 pcm0:play:0 (pcm play channel) @ dev/sound/pcm/channel.c:480
Stack backtrace:
....
witness_lock(c3405080,0,c07a8705,1e0,c33f7300) at witness_lock+0x672
_mtx_lock_flags(c3405080,0,c07a8705,1e0,0) at _mtx_lock_flags+0xba
chn_intr(c33f7300,104,4,4,c3405240) at chn_intr+0x2f
ds_intr(c340b4000,0,c07b3baa,21f,c334c1c4) at ds_intr+0xf5
ithread_loop(c1856900,d03a7d48,c07b3a24,311,3473635f) at ithread_loop+0x192
fork_exit(c059da00,c1856900,d03a7d48) at fork_exit+0xb4
fork_trampoline() at fork_trampoline+0x8

Thanks,
 Haro
=------------------------------------------------------------------------------
           _ _    Munehiro (haro) Matsuda
 -|- /_\  |_|_|   Internet Solution Dept., Kubota Graphics Technologies Inc.
 /|\ |_|  |_|_|   2-8-8 Shinjuku Shinjuku-ku Tokyo 160-0022, Japan
                  Tel: +81-3-3225-0767  Fax: +81-3-3225-0740
                  Email: haro at kgt.co.jp