From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: Re: [PATCH] Remove process freezer from suspend to RAM pathway Date: Fri, 06 Jul 2007 18:59:13 +1000 Message-ID: <1183712354.3388.126.camel@localhost.localdomain> References: <200707052337.27066.oliver@neukum.org> <200707060913.24131.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200707060913.24131.rjw@sisk.pl> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: "Rafael J. Wysocki" Cc: mjg59@srcf.ucam.org, Miklos Szeredi , linux-kernel@vger.kernel.org, pavel@ucw.cz, johannes@sipsolutions.net, linux-pm@lists.linux-foundation.org List-Id: linux-pm@vger.kernel.org On Fri, 2007-07-06 at 09:13 +0200, Rafael J. Wysocki wrote: > > The only reason (I know of) why we don't handle uninterruptible tasks in the > freezer is that we're afraid of the suspend process deadlocking with an > uninterruptible task holding a lock, but AFAICS the probability of such an > event is extremely small. What would deadlock specifically ? One of the drivers trying to acquire that lock ? It would be a driver bug then. > Also, the powermac suspend will deadlock in such cases, so the fact that > it doesn't deadlock means that they don't occur very often (if at all). Ben.