[Intel-gfx] [PATCH] drm/i915: protect force_wake_(get|put) with the gt_lock

[Nicolas Kalkhof]

Hi Daniel,

confirmed. Linus's linux-next.git shows the same behaviour. Until now I've used a patched 3.1-rc-6+ Kernel from Dave Airlie's branch (git://people.freedesktop.org/~airlied/linux' from Oct 26th.). dmesg/syslog shows nothing special, neither does i915_error_state.

Any advice?

Nic

-----Ursprüngliche Nachricht-----
Von: "Daniel Vetter" <daniel at ffwll.ch>
Gesendet: Nov 7, 2011 5:05:12 PM
An: "Nicolas Kalkhof" <nkalkhof at web.de>
Betreff: Re: [Intel-gfx] [PATCH] drm/i915: protect force_wake_(get|put) with the gt_lock

>On Mon, Nov 07, 2011 at 02:52:06PM +0100, Nicolas Kalkhof wrote:
>> Hi Daniel,
>>
>> thanks for the git branch. Strange thing is with the patched kernel the
>> cpu load goes up after working with my desktop with no obvious reason.
>> top shows a high user and system load but no process using up all the
>> cpu cores. The cpufreq-daemon clocks the cpu cores down to the minimal
>> frequency (800mhz) when idle while top still shows full cpu load but no
>> process using up the cpu. The cpu load drops to normal after I kill X
>> and immediately goes up again if I restart X.
>>
>> I'm kinda lost here :( Any Ideas?
>
>Step one is to check whether -linus master has the same issues. My branch
>is based upon
>
>commit 37be944a0270402f9cda291a930b0286f6dc92f5
>Merge: ca836a2 1717c0e
>Author: Linus Torvalds <torvalds at linux-foundation.org>
>Date: Fri Oct 28 05:54:23 2011 -0700
>
> Merge branch 'drm-core-next' of
> git://people.freedesktop.org/~airlied/linux'
>
>If that doesn't show the same issue, can you please run a bisect (only 13
>commits) to find out which patch introduced this?
>
>Thanks, Daniel
>--
>Daniel Vetter
>Mail: daniel at ffwll.ch
>Mobile: +41 (0)79 365 57 48


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