From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: BUG: spinlock trylock failure on UP, i.MX28 3.12.15-rt25 Date: Tue, 22 Apr 2014 16:09:18 +0200 Message-ID: <20140422140918.GE11096@twins.programming.kicks-ass.net> References: <534C3606.7010206@meduna.org> <534C731F.1050406@meduna.org> <534DADF1.6060608@meduna.org> <20140422115439.GA20669@linutronix.de> <20140422094657.5b6ca1e2@gandalf.local.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Sebastian Andrzej Siewior , Stanislav Meduna , "linux-rt-users@vger.kernel.org" , Linux ARM Kernel , "linux-kernel@vger.kernel.org" , Thomas Gleixner To: Steven Rostedt Return-path: Content-Disposition: inline In-Reply-To: <20140422094657.5b6ca1e2@gandalf.local.home> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On Tue, Apr 22, 2014 at 09:46:57AM -0400, Steven Rostedt wrote: > > According to lockdep a trylock should not fail on UP. Oh!? Where does it say that? A trylock can fail at all times. From mboxrd@z Thu Jan 1 00:00:00 1970 From: peterz@infradead.org (Peter Zijlstra) Date: Tue, 22 Apr 2014 16:09:18 +0200 Subject: BUG: spinlock trylock failure on UP, i.MX28 3.12.15-rt25 In-Reply-To: <20140422094657.5b6ca1e2@gandalf.local.home> References: <534C3606.7010206@meduna.org> <534C731F.1050406@meduna.org> <534DADF1.6060608@meduna.org> <20140422115439.GA20669@linutronix.de> <20140422094657.5b6ca1e2@gandalf.local.home> Message-ID: <20140422140918.GE11096@twins.programming.kicks-ass.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Apr 22, 2014 at 09:46:57AM -0400, Steven Rostedt wrote: > > According to lockdep a trylock should not fail on UP. Oh!? Where does it say that? A trylock can fail at all times.