From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267763AbUHJVzm (ORCPT ); Tue, 10 Aug 2004 17:55:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267764AbUHJVzm (ORCPT ); Tue, 10 Aug 2004 17:55:42 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:52151 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S267763AbUHJVzj (ORCPT ); Tue, 10 Aug 2004 17:55:39 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8-rc3-O5 From: Lee Revell To: Ingo Molnar Cc: linux-kernel , Felipe Alfaro Solana , Florian Schmidt In-Reply-To: <20040810132654.GA28915@elte.hu> References: <1090795742.719.4.camel@mindpipe> <20040726082330.GA22764@elte.hu> <1090830574.6936.96.camel@mindpipe> <20040726083537.GA24948@elte.hu> <1090832436.6936.105.camel@mindpipe> <20040726124059.GA14005@elte.hu> <20040726204720.GA26561@elte.hu> <20040729222657.GA10449@elte.hu> <20040801193043.GA20277@elte.hu> <20040809104649.GA13299@elte.hu> <20040810132654.GA28915@elte.hu> Content-Type: text/plain Message-Id: <1092174959.5061.6.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 10 Aug 2004 17:56:00 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-08-10 at 09:26, Ingo Molnar wrote: > i've uploaded the latest version of the voluntary-preempt patch: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8-rc3-O5 > > -O5 fixes the APIC lockup issues. The bug was primarily caused by PCI > POST delays causing IRQ storms of level-triggered IRQ sources that were > hardirq-redirected. Also found some bugs in delayed-IRQ masking and > unmasking. SMP should thus work again too. > The mlockall() issue seems to be fixed. Now I get this one when starting jackd: (jackd/12427): 10882us non-preemptible critical section violated 400 us preempt threshold starting at kernel_fpu_begin+0x10/0x60 and ending at fast_clear_page+0x75/0xa0 [] dump_stack+0x17/0x20 [] sub_preempt_count+0x4b/0x60 [] fast_clear_page+0x75/0xa0 [] do_anonymous_page+0x86/0x180 [] do_no_page+0x50/0x300 [] handle_mm_fault+0xc1/0x170 [] get_user_pages+0x133/0x3d0 [] make_pages_present+0x68/0x90 [] do_mmap_pgoff+0x3f8/0x640 [] sys_mmap2+0x76/0xb0 [] syscall_call+0x7/0xb Lee