[RFC 00/20] Proposal for remaining BKL users

[Palash Bandyopadhyay]

I think it should be ok. If we do hit any performance issue, we'll revisit this.

Thanks,
Palash

-----Original Message-----
From: Arnd Bergmann [mailto:arnd at arndb.de] 
Sent: Wednesday, January 26, 2011 5:45 AM
To: Mauro Carvalho Chehab
Cc: Greg KH; linux-kernel at vger.kernel.org; Andrew Hendry; Andrew Morton; Arjan van de Ven; Arnaldo Carvalho de Melo; autofs at linux.kernel.org; Chris Wilson; Dave Airlie; dri-devel at lists.freedesktop.org; Evgeniy Dushistov; Frederic Weisbecker; H. Peter Anvin; Ian Kent; Ingo Molnar; Jeff Layton; linux-cifs at vger.kernel.org; linux-fsdevel at vger.kernel.org; linux-x25 at vger.kernel.org; Mikulas Patocka; netdev at vger.kernel.org; Nick Bowler; Palash Bandyopadhyay; Ross Cohen; Russell King; Stuart Swales; Takahiro Hirofuchi; Thomas Gleixner
Subject: Re: [RFC 00/20] Proposal for remaining BKL users

On Wednesday 26 January 2011, Mauro Carvalho Chehab wrote:
> I guess you're meaning cx25821, right? 

Right, sorry for the typo.
 
> Palash should take a look on it and review. This is a device that allows
> 12 simultaneous streams, so, I suspect that he'll need to do some
> changes at the locking schema, to avoid performance bottlenecks.

I would be surprised if there was any measurable performance change.
The BKL was used only in the open() function to iterate the device
list, and that code is nowhere on a critical path, as far as I can tell.

	Arnd

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