linux-kernel - Re: [DRM] BUG: sleeping function called from invalid context, drm

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Message-ID: <AANLkTinDBjzOLXE8V3aaiYC=khKM5a8hzXMbNJpowkRt@mail.gmail.com>
Date:	Wed, 11 Aug 2010 16:17:33 +0200
From:	Luca Tettamanti <kronos.it@...il.com>
To:	Dave Airlie <airlied@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [DRM] BUG: sleeping function called from invalid context, 
	drm_lastclose

On Wed, Aug 11, 2010 at 10:50 AM, Dave Airlie <airlied@...il.com> wrote:
> On Wed, Aug 11, 2010 at 6:48 PM, Luca Tettamanti <kronos.it@...il.com> wrote:
>> Hi Arnd,
>> this commit:
>>
>> commit 58374713c9dfb4d231f8c56cac089f6fbdedc2ec
>> Author: Arnd Bergmann <arnd@...db.de>
>> Date:   Sat Jul 10 23:51:39 2010 +0200
>>
>>    drm: kill BKL from common code
>>
>>
>> moved the call to (inside drm_release) drm_lastclose inside dev->count_lock
>> spinlock.
>> drm_lastclose however takes dev->struct_mutex (now inside an atomic
>> context):
>
> I have a patch from Chris Wilson that I need to push to fix this,
> basically reducing the spin lock coverage,
> and relying on the global mutex to handle the open race.

Ok, thank you :)

Luca
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