linux-kernel - Re: [Intel-gfx] BUG: sleeping function called from invalid context on 3.10.10-rt7

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Message-ID: <525801EE.2090807@tuebingen.mpg.de>
Date:	Fri, 11 Oct 2013 15:49:34 +0200
From:	Mario Kleiner <mario.kleiner@...bingen.mpg.de>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>
CC:	Mario Kleiner <mario.kleiner.de@...il.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Clark Williams <williams@...hat.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	LKML <linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Dave Airlie <airlied@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Luis Claudio R. Goncalves" <lclaudio@...g.org>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Ville Syrjälä <ville.syrjala@...ux.intel.com>
Subject: Re: [Intel-gfx] BUG: sleeping function called from invalid context
 on 3.10.10-rt7

On 10/11/2013 03:30 PM, Sebastian Andrzej Siewior wrote:
> On 10/11/2013 02:37 PM, Steven Rostedt wrote:
>> On Fri, 11 Oct 2013 12:18:00 +0200
>> Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:
>>
>>> * Mario Kleiner | 2013-09-26 18:16:47 [+0200]:
>>>
>>>> Good! I will do that. Thanks for clarifying the irq and constraints
>>>> on raw locks in the other thread.
>>>
>>> Are there any suggestions for "now"?  preempt_disable_nort() like Luis
>>> suggesed?
>>>
>>
>> The preempt_disable_nort() is rather pointless, because the
>> preempt_disable() was added specifically for -rt. When PREEMPT_RT is
>> not enabled, preemption is disabled there already by the previous calls
>> to spin_lock().
>
> Either way. Then I remove the preempt_enable/disable call. Any
> objections?
>

Good with me. I'm currently working on a replacement.
-mario

>> -- Steve
>>
> Sebastian
>

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