cvs commit: src/sys/conf files src/sys/dev/drm ati_pcigart.c drm-subprocess.pl drm.h drmP.h drm_agpsupport.c drm_auth.c drm_bufs.c drm_context.c drm_dma.c drm_drawable.c drm_drv.c drm_fops.c drm_internal.h drm_ioctl.c drm_irq.c drm_lock.c ...

[Kostik Belousov]

On Sun, Aug 24, 2008 at 11:50:52AM -0400, Robert Noland wrote:
> On Sun, 2008-08-24 at 14:03 +0300, Kostik Belousov wrote:
> > Unfortunately, I still get a hang with r300 in drm_lastclose().
> 
> I don't understand this.  You are the only one that I'm hearing this
> from now.  Our open/close routines are an ugly maze, but the last time I
> had radeon hardware it worked great.  I had tests with this patch on a
> 9250 and some newer, higher end radeons also.  Can you get a trace or
> see if it is hung on a lock?
> 
> I don't currently have any radeon hardware, so I have to work blind on
> it.
> 
> robert.

I believe I already posted the backtrace of the X server whan this happen
(see below). The thing I cannot explain is the mouse pointer that still
follows the mouse. Everything else in X is frozen; system as a whole
works, X server eats 100% of the CPU in the loop that is easily
deducable from the trace.

I get this almost deterministically when I run either firefox or xdvi.
Probably, the hang could be reproduced with other apps too, but I
use xterm, xchat and xpdf only. My graphic card is r300 (PCI:*(1:0:0)
ATI Technologies Inc R420 JI [Radeon X800PRO] rev 0). The same problem
was observed on r200.

For some time, I blamed rev. 1.7 of drm_drv.c, but it appears that
reverting it does not make any change.

Would be happy to help get this resolved.

#4  0xc04c9bb9 in _sleep (ident=0xe7c91840, lock=0xc54a98d8, priority=84,       
    wmesg=0xc550ed1a "rdnrel", timo=1)                                          
    at /usr/bsd/src/sys/kern/kern_synch.c:235                                   
#5  0xc54fecfe in radeon_do_release () from /boot/kernel/radeon.ko              
#6  0xc551f0c5 in drm_lastclose () from /boot/kernel/drm.ko                     
#7  0xc551ff3b in drm_close () from /boot/kernel/drm.ko                         
#8  0xc0487fb0 in giant_close (dev=0xc5527a00, fflag=67, devtype=8192,          
    td=0xc5871880) at /usr/bsd/src/sys/kern/kern_conf.c:371                     
#9  0xc046ad2c in devfs_close (ap=0xe7c91940)                                   
    at /usr/bsd/src/sys/fs/devfs/devfs_vnops.c:372
#10 0xc06eddc2 in VOP_CLOSE_APV (vop=0xc0731380, a=0xe7c91940)                  
    at vnode_if.c:424
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