linux-kernel - Re: [ANNOUNCE] 3.6.11.1-rt32

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Date:	Tue, 09 Apr 2013 13:46:56 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Carsten Emde <C.Emde@...dl.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	John Kacur <jkacur@...hat.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [ANNOUNCE] 3.6.11.1-rt32

On Tue, 2013-04-02 at 05:13 +0200, Carsten Emde wrote:
> Steven,

> > I'm pleased to announce the 3.6.11.1-rt32 stable release.
> Unfortunately, there is another compile error:
> drivers/gpu/drm/i915/i915_gem.c: In function ‘i915_gem_wait_for_error’:
> drivers/gpu/drm/i915/i915_gem.c:118:3: warning: passing argument 1 of 
> ‘rt_spin_lock’ from incompatible pointer type [enabled by default]
> In file included from include/linux/spinlock.h:273:0,
>                   from include/linux/wait.h:24,
>                   from include/linux/fs.h:396,
>                   from include/drm/drmP.h:47,
>                   from drivers/gpu/drm/i915/i915_gem.c:28:
> include/linux/spinlock_rt.h:21:24: note: expected ‘struct spinlock_t *’ 
> but argument is of type ‘struct raw_spinlock_t *’
> drivers/gpu/drm/i915/i915_gem.c:120:3: warning: passing argument 1 of 
> ‘rt_spin_unlock’ from incompatible pointer type [enabled by default]
> In file included from include/linux/spinlock.h:273:0,
>                   from include/linux/wait.h:24,
>                   from include/linux/fs.h:396,
>                   from include/drm/drmP.h:47,
>                   from drivers/gpu/drm/i915/i915_gem.c:28:
> include/linux/spinlock_rt.h:24:24: note: expected ‘struct spinlock_t *’ 
> but argument is of type ‘struct raw_spinlock_t *’
> drivers/gpu/drm/i915/i915_gem.c: In function ‘i915_gem_check_wedge’:
> drivers/gpu/drm/i915/i915_gem.c:1890:3: warning: passing argument 1 of 
> ‘rt_spin_lock’ from incompatible pointer type [enabled by default]
> In file included from include/linux/spinlock.h:273:0,
>                   from include/linux/wait.h:24,
>                   from include/linux/fs.h:396,
>                   from include/drm/drmP.h:47,
>                   from drivers/gpu/drm/i915/i915_gem.c:28:
> include/linux/spinlock_rt.h:21:24: note: expected ‘struct spinlock_t *’ 
> but argument is of type ‘struct raw_spinlock_t *’
> drivers/gpu/drm/i915/i915_gem.c:1892:3: warning: passing argument 1 of 
> ‘rt_spin_unlock’ from incompatible pointer type [enabled by default]
> In file included from include/linux/spinlock.h:273:0,
>                   from include/linux/wait.h:24,
>                   from include/linux/fs.h:396,
>                   from include/drm/drmP.h:47,
>                   from drivers/gpu/drm/i915/i915_gem.c:28:
> include/linux/spinlock_rt.h:24:24: note: expected ‘struct spinlock_t *’ 
> but argument is of type ‘struct raw_spinlock_t *’
> 
> I would propose to adopt the mechanism that Sebastian introduced in
> 3.8.4-rt2 (https://lkml.org/lkml/2013/3/26/600). The kernel compiles
> and runs without any problem with the below patch on a system that
> requires the i915 driver module.
> 

Thanks Carsten, I'll be updating this later today. BTW, did you get any
core dumps from the work queue race that we've been seeing?

Thanks,

-- Steve


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