From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757701Ab0EAAZy (ORCPT ); Fri, 30 Apr 2010 20:25:54 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:41989 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753735Ab0EAAZw (ORCPT ); Fri, 30 Apr 2010 20:25:52 -0400 Date: Fri, 30 Apr 2010 17:25:48 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com Subject: [PATCH tip/core/urgent 0/10] v2: Fix RCU lockdep splats Message-ID: <20100501002548.GA27375@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This patchset contains ten fixes for various lockdep splats. The first two sets are repostings/revisions, the rest new. The new patches have all been posted to LKML, but this is the first time for inclusion. o rcu: v2: optionally leave lockdep enabled after RCU lockdep splat This is a repost that makes the one-splat-per-boot the default, but allows those who want multiple splats to get this behavior via a new CONFIG_PROVE_RCU_REPEATEDLY configuration parameter. (Original from Lai Jiangshan.) o KEYS: Fix an RCU warning KEYS: Fix an RCU warning in the reading of user keys Fixes for RCU-lockdep splats from David Howells for security/keys. Repost of http://lkml.org/lkml/2010/4/22/411. o cgroup: Fix an RCU warning in cgroup_path() cgroup: Fix an RCU warning in alloc_css_id() sched: Fix an RCU warning in print_task() cgroup: Check task_lock in task_subsys_state() Fixes for new RCU-lockdep splats in cgroups and sched from Li Zefan. o memcg: css_id() must be called under rcu_read_lock() Fixes for new RCU-lockdep splats in memcg from Kamazawa Hiroyuki. o blk-cgroup: Fix RCU correctness warning in cfq_init_queue() Fix for new RCU-lockdep splat in I/O scheduler from Vivek Goyal. o vfs: fix RCU-lockdep false positive due to /proc access Fix for new RCU-lockdep splat from fdtable.h, with much debugging assist from Eric Dumazet. b/block/cfq-iosched.c | 2 ++ b/include/linux/cgroup.h | 1 + b/include/linux/fdtable.h | 3 ++- b/include/linux/rcupdate.h | 15 +++++++++++---- b/kernel/cgroup.c | 12 +++++++++--- b/kernel/lockdep.c | 2 ++ b/kernel/sched_debug.c | 2 ++ b/lib/Kconfig.debug | 12 ++++++++++++ b/mm/memcontrol.c | 21 ++++++++++++++++----- b/security/keys/request_key.c | 13 ++++++++----- b/security/keys/user_defined.c | 3 ++- kernel/cgroup.c | 4 ++-- 12 files changed, 69 insertions(+), 21 deletions(-)