From mboxrd@z Thu Jan 1 00:00:00 1970 From: gdavis@mvista.com (George G. Davis) Date: Wed, 30 Mar 2011 21:05:21 -0400 Subject: SMP soft lockup on smp_call_function_many when doing flush_tlb_page In-Reply-To: References: <1299591229.19820.91.camel@e102109-lin.cambridge.arm.com> <1299603582.19820.125.camel@e102109-lin.cambridge.arm.com> <1299685848.19820.353.camel@e102109-lin.cambridge.arm.com> <20110330051849.GB13080@mvista.com> Message-ID: <20110331010521.GL13080@mvista.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On Wed, Mar 30, 2011 at 10:17:38AM +0200, saeed bishara wrote: > On Wed, Mar 30, 2011 at 7:18 AM, George G. Davis wrote: > > Hi, > > > > On Wed, Mar 09, 2011 at 03:50:48PM +0000, Catalin Marinas wrote: > >> On Wed, 2011-03-09 at 15:22 +0000, saeed bishara wrote: > >> > > Did you get a chance to try this patch? > >> > yes, it works fine > >> > >> Thanks for trying. I'll add a commit log and post. > > > > Based on your comments here [1], it looks like your fix for this [2] is > > superseeded by [3] which is already applied [4]. ?Can you confirm? > [4] fixed the bug that I reported here. and since my kernel based on > 2.6.35.9, I backported several patches besides to that one, here is > the list:: > 0001-generic-ipi-Fix-deadlock-in-__smp_call_function_sing.patch > 0002-kernel-smp.c-fix-smp_call_function_many-SMP-race.patch > 0003-kernel-smp.c-consolidate-writes-in-smp_call_function.patch > 0004-call_function_many-fix-list-delete-vs-add-race.patch > 0005-call_function_many-add-missing-ordering.patch > 0006-smp_call_function_many-handle-concurrent-clearing-of.patch > > with those patches I don't see IPI lockup issue any more. > saeed Thanks! -- Regards, George > > > > TIA! > > > > -- > > Regards, > > George > > > > [1] https://lkml.org/lkml/2011/3/15/429 > > [2] https://lkml.org/lkml/2011/3/15/296 > > [3] https://lkml.org/lkml/2011/3/15/315 > > [4] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=723aae2 > >> > >> -- > >> Catalin > >> > >> > >> > >> _______________________________________________ > >> linux-arm-kernel mailing list > >> linux-arm-kernel at lists.infradead.org > >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > >