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From: "Mathias Fröhlich" <Mathias.Froehlich@gmx.net>
To: dri-devel@lists.freedesktop.org, deathsimple@vodafone.de
Subject: Re: [PATCH 1/4] drm/radeon: move ring syncing after bo validation
Date: Thu, 23 Feb 2012 18:05:50 +0100	[thread overview]
Message-ID: <1387209.zHcf9HjvNQ@notebook> (raw)
In-Reply-To: <1330006725-2373-1-git-send-email-deathsimple@vodafone.de>


Christian,

On Thursday, February 23, 2012 15:18:42 Christian König wrote:
> The function radeon_bo_list_validate can cause a
> bo to move, resulting in a different sync_obj
> and a dependency to wait for this move to finish.
> 
> Signed-off-by: Christian König <deathsimple@vodafone.de>
> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

I am not sure, but to me this looks like this could fix these kind of gpu 
lockups that I experience since some time every now and then.
The usual symptom is that I get the 

radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
GPU lockup (waiting for 0x00682AC3 last fence id 0x00682AC2)
[...]

kernel message. Each time with the fence being off by one like in the example 
above.

If this change has the potential to fix this issue I think this particular 
patch should be considered for the current upstream kernel release.

Mathias

  parent reply	other threads:[~2012-02-23 17:05 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-23 14:18 [PATCH 1/4] drm/radeon: move ring syncing after bo validation Christian König
2012-02-23 14:18 ` [PATCH 2/4] drm/radeon/kms: no need to align IB like this Christian König
2012-02-23 17:00   ` Jerome Glisse
2012-02-23 18:19     ` Christian König
2012-02-23 14:18 ` [PATCH 3/4] drm/radeon: also make the cs_parse function per ring Christian König
2012-02-24 17:14   ` Jerome Glisse
2012-02-23 14:18 ` [PATCH 4/4] drm/radeon: fix IB debugfs files for multiple cards Christian König
2012-02-23 15:17 ` [PATCH 1/4] drm/radeon: move ring syncing after bo validation Alex Deucher
2012-02-24 17:15   ` Jerome Glisse
2012-02-23 17:05 ` Mathias Fröhlich [this message]
2012-02-23 17:32   ` Jerome Glisse
2012-02-23 18:27     ` Christian König

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