From: Arnd Bergmann <arnd@arndb.de>
To: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
dri-devel@lists.freedesktop.org,
Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>,
"H. Peter Anvin" <hpa@zytor.com>, Ian Kent <raven@themaw.net>,
linux-cifs@vger.kernel.org,
Nick Bowler <nbowler@elliptictech.com>,
linux-x25@vger.kernel.org,
Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>,
Ross Cohen <rcohen@snurgle.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Evgeniy Dushistov <dushistov@mail.ru>,
Stuart Swales <stuart.swales.croftnuisk@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Arjan van de Ven <arjan@linux.intel.com>,
autofs@linux.kernel.org, Jeff Layton <jlayton@redhat.com>,
netdev@vger.kernel.org, Greg KH <gregkh@suse.de>,
linux-kernel@vger.kernel.org,
Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Andrew Hendry
Subject: Re: [RFC 00/20] Proposal for remaining BKL users
Date: Wed, 26 Jan 2011 14:45:17 +0100 [thread overview]
Message-ID: <201101261445.17751.arnd@arndb.de> (raw)
In-Reply-To: <4D400C5D.80004@redhat.com>
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
next prev parent reply other threads:[~2011-01-26 13:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 22:17 [RFC 00/20] Proposal for remaining BKL users Arnd Bergmann
2011-01-25 22:17 ` [PATCH 07/20] staging: remove smbfs Arnd Bergmann
2011-01-26 2:22 ` [RFC 00/20] Proposal for remaining BKL users Greg KH
2011-01-26 11:31 ` Arnd Bergmann
2011-01-26 11:58 ` Mauro Carvalho Chehab
2011-01-26 13:45 ` Arnd Bergmann [this message]
2011-01-26 16:24 ` Palash Bandyopadhyay
-- strict thread matches above, loose matches on Subject: below --
2011-01-25 22:22 Arnd Bergmann
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