linux-kernel - Re: [PATCH] drm: convert drm_ioctl to unlocked

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Message-ID: <4B2B727A.7020806@shipmail.org>
Date:	Fri, 18 Dec 2009 13:15:54 +0100
From:	Thomas Hellström <thomas@...pmail.org>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Dave Airlie <airlied@...il.com>, David Airlie <airlied@...ux.ie>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	dri-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: convert drm_ioctl to unlocked_ioctl

Arnd Bergmann wrote:
> On Friday 18 December 2009, Dave Airlie wrote:
>   
>> This looks good, I've taken this and I've squashed
>> the generic pieces of your RFC into this (i.e.
>> I haven't modified the drivers, but just added the
>> flag to allow the ioctls to be unlocked if the driver
>> selects them).
>>
>> Do you think we should try and get this in soon,
>> its seems like it shouldn't have any regressions
>> unless we start switching drivers over.
>>     
>
> Well, since the patch should not change the behaviour
> of the drivers, it probably doesn't matter to users
> either way. However, it touches a number of places,
> which can break patches that others are working on,
> so maybe you should get it upstream at a point that
> has the least impact to developer (possibly now).
>
> Doing it now at least makes it easier to test
> moving drivers to unlocked operation.
>
> 	Arnd
>   

I'm very much for this as well.
Note that the vmwgfx driver has another (workaround-like) approach to 
achieve
unlocked driver ioctls, but it shouldn't be too hard to convert it.

/Thomas
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