Re: [PATCH] drm/ttm: fix delayed ttm_bo_cleanup_refs_and_unlock delayed handling

[Markus Trippelsdorf <markus@trippelsdorf.de>]

On 2012.12.20 at 08:30 -0500, Alex Deucher wrote:
> On Wed, Dec 19, 2012 at 9:33 AM, Markus Trippelsdorf
> <markus@trippelsdorf.de> wrote:
> > On 2012.12.19 at 15:18 +0100, Maarten Lankhorst wrote:
> >> Fix regression introduced by 85b144f860176
> >
> > Thanks. This fixes the kernel BUG, but now I get this errors in my
> > Xorg.log:
> >
> > [    23.092] [mi] Increasing EQ size to 512 to prevent dropped events.
> > (EE) [mi] EQ overflowing.  Additional events will be discarded until existing events are processed.
> > (EE)
> > (EE) Backtrace:
> > (EE) 0: /usr/bin/X (xorg_backtrace+0x3d) [0x584f1d]
> > (EE) 1: /usr/bin/X (mieqEnqueue+0x21b) [0x56615b]
> > (EE) 2: /usr/bin/X (QueuePointerEvents+0x52) [0x44a792]
> > (EE) 3: /usr/bin/X (xf86PostButtonEvent+0xd5) [0x4829b5]
> > (EE) 4: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x6b70) [0x7ff8f2507b70]
> > (EE) 5: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x73a0) [0x7ff8f25083a0]
> > (EE) 6: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x428c) [0x7ff8f250528c]
> > (EE) 7: /usr/bin/X (0x400000+0x71cd8) [0x471cd8]
> > (EE) 8: /usr/bin/X (0x400000+0x9a2ab) [0x49a2ab]
> > (EE) 9: /lib/libpthread.so.0 (0x7ff8f1edc000+0xf260) [0x7ff8f1eeb260]
> > (EE) 10: /lib/libc.so.6 (ioctl+0x7) [0x7ff8f19bd127]
> > (EE) 11: /usr/lib/libdrm.so.2 (drmIoctl+0x34) [0x7ff8f246a634]
> > (EE) 12: /usr/lib/libdrm.so.2 (drmCommandWriteRead+0x1f) [0x7ff8f246cbdf]
> > (EE) 13: /usr/lib/libdrm_radeon.so.1 (0x7ff8f250e000+0x27bf) [0x7ff8f25107bf]
> > (EE) 14: /usr/lib64/xorg/modules/drivers/radeon_drv.so (0x7ff8f154f000+0x407ec) [0x7ff8f158f7ec]
> > (EE) 15: /usr/bin/X (_CallCallbacks+0x34) [0x438894]
> > (EE) 16: /usr/bin/X (FlushAllOutput+0x2c) [0x5880ec]
> > (EE) 17: /usr/bin/X (0x400000+0x33aa1) [0x433aa1]
> > (EE) 18: /usr/bin/X (0x400000+0x230cd) [0x4230cd]
> > (EE) 19: /lib/libc.so.6 (__libc_start_main+0xf5) [0x7ff8f19088b5]
> > (EE) 20: /usr/bin/X (0x400000+0x22c09) [0x422c09]
> > (EE)
> > (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
> > (EE) [mi] mieq is *NOT* the cause.  It is a victim.
> > (EE) [mi] EQ overflow continuing.  100 events have been dropped.
> > (EE)
> > (EE) Backtrace:
> > (EE) 0: /usr/bin/X (xorg_backtrace+0x3d) [0x584f1d]
> > (EE) 1: /usr/bin/X (QueuePointerEvents+0x52) [0x44a792]
> > (EE) 2: /usr/bin/X (xf86PostButtonEvent+0xd5) [0x4829b5]
> > (EE) 3: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x6b70) [0x7ff8f2507b70]
> > (EE) 4: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x73a0) [0x7ff8f25083a0]
> > (EE) 5: /usr/lib64/xorg/modules/input/mouse_drv.so (0x7ff8f2501000+0x428c) [0x7ff8f250528c]
> > (EE) 6: /usr/bin/X (0x400000+0x71cd8) [0x471cd8]
> > (EE) 7: /usr/bin/X (0x400000+0x9a2ab) [0x49a2ab]
> > (EE) 8: /lib/libpthread.so.0 (0x7ff8f1edc000+0xf260) [0x7ff8f1eeb260]
> > (EE) 9: /lib/libc.so.6 (ioctl+0x7) [0x7ff8f19bd127]
> > (EE) 10: /usr/lib/libdrm.so.2 (drmIoctl+0x34) [0x7ff8f246a634]
> > (EE) 11: /usr/lib/libdrm.so.2 (drmCommandWriteRead+0x1f) [0x7ff8f246cbdf]
> > (EE) 12: /usr/lib/libdrm_radeon.so.1 (0x7ff8f250e000+0x27bf) [0x7ff8f25107bf]
> > (EE) 13: /usr/lib64/xorg/modules/drivers/radeon_drv.so (0x7ff8f154f000+0x407ec) [0x7ff8f158f7ec]
> > (EE) 14: /usr/bin/X (_CallCallbacks+0x34) [0x438894]
> > (EE) 15: /usr/bin/X (FlushAllOutput+0x2c) [0x5880ec]
> > (EE) 16: /usr/bin/X (0x400000+0x33aa1) [0x433aa1]
> > (EE) 17: /usr/bin/X (0x400000+0x230cd) [0x4230cd]
> > (EE) 18: /lib/libc.so.6 (__libc_start_main+0xf5) [0x7ff8f19088b5]
> > (EE) 19: /usr/bin/X (0x400000+0x22c09) [0x422c09]
> > (EE)
> > (EE) [mi] EQ overflow continuing.  200 events have been dropped.
> >
> > And the pictures get distorted on the test-webpage. See attached screenshot.
> >
> 
> Anything in your kernel log that corresponds to the errors in your xorg log?

No. But I've found out that the errors in the xorg log are unrelated to
the image corruption. 
I use one of those Logitech mice with this "hyper" fast scrolling
feature. And I guess the Xorg mouse driver just can't keep up with the
fast input. So it's just a harmless warning that can be ignored, I
guess.

-- 
Markus