From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934427AbYEUMnD (ORCPT ); Wed, 21 May 2008 08:43:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764510AbYEUMmy (ORCPT ); Wed, 21 May 2008 08:42:54 -0400 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:23018 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761347AbYEUMmx (ORCPT ); Wed, 21 May 2008 08:42:53 -0400 Message-ID: <483418CB.7070602@qumranet.com> Date: Wed, 21 May 2008 15:42:51 +0300 From: Avi Kivity User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Heiko Carstens CC: Dmitry Adamushko , linux-kernel , Ingo Molnar , Peter Zijlstra , Srivatsa Vaddagiri Subject: Re: [BUG] cpu hotplug vs scheduler References: <4829A6A0.5040208@qumranet.com> <482ADB69.8010305@qumranet.com> <482C0E35.9000708@qumranet.com> <20080521123116.GC9441@osiris.boeblingen.de.ibm.com> In-Reply-To: <20080521123116.GC9441@osiris.boeblingen.de.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Heiko Carstens wrote: >> Now it died when allocating the pda: >> >> [4301986.526627] Booting processor 1/6 ip 6000 >> [4301986.537195] swapper: page allocation failure. order:2, mode:0x20 >> [4301986.537195] Pid: 0, comm: swapper Not tainted 2.6.26-rc2 #728 >> [4301986.537195] >> [4301986.537195] Call Trace: >> [4301986.537195] [] ? __printk_ratelimit+0x9/0xb >> [4301986.537195] [] __alloc_pages_internal+0x387/0x39f >> [4301986.537195] [] __alloc_pages+0xb/0xd >> [4301986.537195] [] __get_free_pages+0x15/0x46 >> [4301986.537195] [] pda_init+0x87/0xac >> [4301986.537195] [] cpu_init+0x5e/0x34a >> [4301986.537195] [] ? rcu_needs_cpu+0x36/0x47 >> [4301986.537195] [] ? idle_task_exit+0x71/0xad >> [4301986.537195] [] start_secondary+0xc/0x178 >> [4301986.537195] >> [4301986.537195] Mem-info: >> [4301986.537195] DMA per-cpu: >> [4301986.537195] CPU 0: hi: 0, btch: 1 usd: 0 >> [4301986.537195] CPU 2: hi: 0, btch: 1 usd: 0 >> [4301986.537195] DMA32 per-cpu: >> [4301986.537195] CPU 0: hi: 186, btch: 31 usd: 153 >> [4301986.537195] CPU 2: hi: 186, btch: 31 usd: 135 >> [4301986.537195] Active:347879 inactive:109278 dirty:107 writeback:0 >> unstable:0 >> [4301986.537195] free:5311 slab:10186 mapped:30496 pagetables:1587 bounce:0 >> [4301986.537195] DMA free:8012kB min:24kB low:28kB high:36kB active:60kB >> inactive:0kB present:8644kB pages_scanned:0 all_unreclaimable? no >> [4301986.537195] lowmem_reserve[]: 0 1999 1999 1999 >> [4301986.537195] DMA32 free:13232kB min:5704kB low:7128kB high:8556kB >> active:1391456kB inactive:437112kB present:2047248kB pages_scanned:0 >> all_unreclaimable? no >> [4301986.537195] lowmem_reserve[]: 0 0 0 0 >> [4301986.537195] DMA: 19*4kB 16*8kB 10*16kB 11*32kB 6*64kB 4*128kB >> 1*256kB 2*512kB 3*1024kB 1*2048kB 0*4096kB = 8012kB >> [4301986.537195] DMA32: 2034*4kB 570*8kB 1*16kB 0*32kB 0*64kB 0*128kB >> 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 13224kB >> [4301986.537195] 212750 total pagecache pages >> [4301986.537195] Swap cache: add 73, delete 18, find 0/0 >> [4301986.537195] Free swap = 3210964kB >> [4301986.537195] Total swap = 3211256kB >> >> There seem to be some order-2 allocations available, though. And in any >> case, cpu hotplug should't crash on such failures, only fail. >> > > Hi Avi, > > I think you fixed this specific bug. Does cpu hotplug stresstest now work > for you? > Which bug, the order-2 allocs? I certainly didn't fix it. Last I tried, cpu hotplug still failed, but it was some time ago as patches flow. -- error compiling committee.c: too many arguments to function