From: "Palash Bandyopadhyay" <Palash.Bandyopadhyay@conexant.com> To: "Arnd Bergmann" <arnd@arndb.de>, "Mauro Carvalho Chehab" <mchehab@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com>, "dri-devel@lists.freedesktop.org" <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" <linux-cifs@vger.kernel.org>, Nick Bowler <nbowler@elliptictech.com>, "linux-x25@vger.kernel.org" <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" <autofs@linux.kernel.org>, Jeff Layton <jlayton@redhat.com>, "netdev@vger.kernel.org" <netdev@vger.kernel.org>, Greg KH <gregkh@suse.de>, "linux-kernel@vger.ker Subject: RE: [RFC 00/20] Proposal for remaining BKL users Date: Wed, 26 Jan 2011 08:24:04 -0800 [thread overview] Message-ID: <34B38BE41EDBA046A4AFBB591FA31132024B33E8CE@NBMBX01.bbnet.ad> (raw) In-Reply-To: <201101261445.17751.arnd@arndb.de> 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@arndb.de] Sent: Wednesday, January 26, 2011 5:45 AM To: Mauro Carvalho Chehab Cc: Greg KH; linux-kernel@vger.kernel.org; Andrew Hendry; Andrew Morton; Arjan van de Ven; Arnaldo Carvalho de Melo; autofs@linux.kernel.org; Chris Wilson; Dave Airlie; dri-devel@lists.freedesktop.org; Evgeniy Dushistov; Frederic Weisbecker; H. Peter Anvin; Ian Kent; Ingo Molnar; Jeff Layton; linux-cifs@vger.kernel.org; linux-fsdevel@vger.kernel.org; linux-x25@vger.kernel.org; Mikulas Patocka; netdev@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 Conexant E-mail Firewall (Conexant.Com) made the following annotations --------------------------------------------------------------------- ********************** Legal Disclaimer **************************** "This email may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message in error, please advise the sender by reply email and delete the message. Thank you." ********************************************************************** ---------------------------------------------------------------------
next prev parent reply other threads:[~2011-01-26 16:24 UTC|newest] Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-01-25 22:17 Arnd Bergmann 2011-01-25 22:17 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 01/20] drm/i810: remove the BKL Arnd Bergmann 2011-01-25 22:17 ` [PATCH 02/20] drm: remove i830 driver Arnd Bergmann 2011-01-25 22:17 ` [PATCH 03/20] staging/usbip: convert to kthread Arnd Bergmann 2011-01-28 17:53 ` Max Vozeler 2011-01-28 18:48 ` Arnd Bergmann 2011-03-01 22:15 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 04/20] staging/cx25721: serialize access to devlist Arnd Bergmann 2011-01-26 16:23 ` Palash Bandyopadhyay 2011-01-31 21:37 ` Greg KH 2011-01-25 22:17 ` [PATCH 05/20] staging/go7007: remove the BKL Arnd Bergmann 2011-01-25 22:17 ` [PATCH 06/20] staging: Remove autofs3 Arnd Bergmann 2011-01-26 7:41 ` H. Peter Anvin 2011-01-25 22:17 ` [PATCH 07/20] staging: remove smbfs Arnd Bergmann 2011-01-25 22:17 ` [PATCH 08/20] adfs: remove the big kernel lock Arnd Bergmann 2011-01-25 22:20 ` Russell King 2011-01-25 22:17 ` [PATCH 09/20] hpfs: rename big kernel lock to hpfs_lock Arnd Bergmann 2011-01-25 22:17 ` [PATCH 10/20] hpfs: replace BKL with a global mutex Arnd Bergmann 2011-01-26 0:15 ` Andi Kleen 2011-01-26 0:19 ` Andi Kleen 2011-01-26 12:48 ` [PATCH v2] hpfs: remove the BKL Arnd Bergmann 2011-01-26 12:50 ` [PATCH 10/20] hpfs: replace BKL with a global mutex Arnd Bergmann 2011-01-26 16:52 ` Andi Kleen 2011-01-27 5:01 ` Nick Piggin 2011-01-27 10:57 ` Miklos Szeredi 2011-01-25 22:17 ` [PATCH 11/20] hpfs: move to drivers/staging Arnd Bergmann 2011-02-07 16:17 ` Mikulas Patocka 2011-02-07 19:31 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 12/20] x25: remove the BKL Arnd Bergmann 2011-01-27 10:07 ` Andrew Hendry 2011-01-27 12:17 ` Arnd Bergmann 2011-01-27 12:38 ` [PATCH v2] " Arnd Bergmann 2011-01-27 13:20 ` Eric Dumazet 2011-01-27 13:43 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 13/20] appletalk: move to staging Arnd Bergmann 2011-01-25 22:17 ` [PATCH 14/20] staging/appletalk: remove the BKL Arnd Bergmann 2011-01-25 22:29 ` David Miller 2011-01-26 12:57 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 15/20] ufs: " Arnd Bergmann 2011-01-26 2:30 ` Nick Bowler 2011-01-26 12:53 ` Arnd Bergmann 2011-01-27 5:47 ` Nick Piggin 2011-01-27 13:13 ` Arnd Bergmann 2011-01-25 22:17 ` [PATCH 16/20] ipx: " Arnd Bergmann 2011-01-25 22:17 ` [PATCH 17/20] tracing: don't trace " Arnd Bergmann 2011-01-25 22:28 ` Frederic Weisbecker 2011-01-25 22:17 ` [PATCH 18/20] rtmutex-tester: remove BKL tests Arnd Bergmann 2011-01-26 15:00 ` [tip:core/locking] rtmutex-tester: Remove " tip-bot for Arnd Bergmann 2011-02-22 20:57 ` [tip:irq/core] rtmutex: tester: " tip-bot for Arnd Bergmann 2011-01-25 22:17 ` [PATCH 19/20] drivers: remove extraneous includes of smp_lock.h Arnd Bergmann 2011-01-25 22:17 ` [PATCH 20/20] BKL: That's all, folks Arnd Bergmann 2011-01-26 6:19 ` Ingo Molnar 2011-01-26 8:47 ` Alan Cox 2011-01-26 11:01 ` Ingo Molnar 2011-01-26 11:22 ` Thomas Gleixner 2011-01-26 2:22 ` [RFC 00/20] Proposal for remaining BKL users Greg KH 2011-01-26 2:22 ` Greg KH 2011-01-26 11:31 ` Arnd Bergmann 2011-01-26 11:31 ` Arnd Bergmann 2011-01-26 11:58 ` Mauro Carvalho Chehab 2011-01-26 13:45 ` Arnd Bergmann 2011-01-26 13:45 ` Arnd Bergmann 2011-01-26 16:24 ` Palash Bandyopadhyay [this message] 2011-01-25 22:22 Arnd Bergmann 2011-01-25 22:22 ` Arnd Bergmann
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