From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752757Ab0EHLPj (ORCPT ); Sat, 8 May 2010 07:15:39 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:55493 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751374Ab0EHLPi (ORCPT ); Sat, 8 May 2010 07:15:38 -0400 Date: Sat, 8 May 2010 13:15:29 +0200 From: Ingo Molnar To: Tejun Heo Cc: peterz@infradead.org, linux-kernel@vger.kernel.org, paulmck@linux.vnet.ibm.com Subject: Re: [GIT PULL sched/core] cpu_stop: implement and use cpu_stop, take#3 Message-ID: <20100508111529.GA19796@elte.hu> References: <1273164772-19149-1-git-send-email-tj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1273164772-19149-1-git-send-email-tj@kernel.org> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Tejun Heo wrote: > Hello, Ingo. > > Please pull from the following branch to receive cpu_stop patches. > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git cpu_stop > > Adding mb()'s in synchronize_sched_expedited() is the only change > since the last take[2]. Both Peter and Paul have acked the patchset. > I'll post the patchset as replies to this message. > > This patchset is on top of the current sched/core (99bd5e2f) and > contains the following changes. > > Paul E. McKenney (1): > scheduler: correctly place paranioa memory barriers in synchronize_sched_expedited() > > Tejun Heo (4): > cpu_stop: implement stop_cpu[s]() > stop_machine: reimplement using cpu_stop > scheduler: replace migration_thread with cpu_stop > scheduler: kill paranoia check in synchronize_sched_expedited() > > Documentation/RCU/torture.txt | 10 - > arch/s390/kernel/time.c | 1 - > drivers/xen/manage.c | 14 +- > include/linux/rcutiny.h | 2 - > include/linux/rcutree.h | 1 - > include/linux/stop_machine.h | 59 +++-- > kernel/cpu.c | 8 - > kernel/module.c | 14 +- > kernel/rcutorture.c | 2 +- > kernel/sched.c | 284 +++++----------------- > kernel/sched_fair.c | 48 +++- > kernel/stop_machine.c | 530 +++++++++++++++++++++++++++++++---------- > 12 files changed, 538 insertions(+), 435 deletions(-) FYI, it doesnt build on x86 allnoconfig: kernel/sched_fair.c: In function 'load_balance': kernel/sched_fair.c:2917: error: implicit declaration of function 'stop_one_cpu_nowait' kernel/sched.c: In function 'sched_exec': kernel/sched.c:3084: error: implicit declaration of function 'stop_one_cpu' kernel/sched.c: In function 'synchronize_sched_expedited': Ingo