linux-kernel - Re: drm i915 hangs on heavy io load

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Date:	Sun, 28 Oct 2012 11:47:53 +0900
From:	Norbert Preining <preining@...ic.at>
To:	Chris Wilson <chris@...is-wilson.co.uk>
Cc:	Dave Airlie <airlied@...il.com>, linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	dri-devel@...ts.freedesktop.org
Subject: Re: drm i915 hangs on heavy io load

Hi Chris,

I haven't answered due to several reboots necessary (sometimes 
I have to work on Win***) and no effect, but ..

On Mi, 24 Okt 2012, Chris Wilson wrote:
> > > http://cgit.freedesktop.org/~danvet/drm/commit/?h=ilk-wa-pile&id=0d5fed2de763b49bb1a90140758153481f043757
> > > is the missing ingredient.
> > 
> > I am compiling a kernel with this patch based on current git now.
> > Should I still use the above kernel cmd argument (i915...rc6=0)
> > or try without it?
> 
> Without any rc6 parameter would be best. But if rc6=0 wasn't the
> solution for you, then I may have identified the wrong w/a. Can I ask
> you try the patches in that branch until you find one (or more perhaps)
> that stabilise your system?

I pulled the whole branch into my compile branch, and removed everything
from kernel cmd line regarding rc6, and got the
	[drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
	[drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
	[drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
	[drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
	[drm:i915_reset] *ERROR* Failed to reset chip.
new i915_error_state.gz at the same place.

So it seems that the patches in the ilk-wa-pile branch do not help.

All the best

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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