Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755293Ab0AMKCd (ORCPT ); Wed, 13 Jan 2010 05:02:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755227Ab0AMKCd (ORCPT ); Wed, 13 Jan 2010 05:02:33 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:35287 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755212Ab0AMKCc (ORCPT ); Wed, 13 Jan 2010 05:02:32 -0500 Date: Wed, 13 Jan 2010 11:00:22 +0100 From: Ingo Molnar To: Hitoshi Mitake , Greg KH Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Paul Mackerras , Frederic Weisbecker , Greg Kroah-Hartman Subject: Re: [PATCH 5/5] lockdep: Fix the way to initialize class_mutex for information of file and line Message-ID: <20100113100022.GA11386@elte.hu> References: <4B45B9C1.2040900@dcl.info.waseda.ac.jp> <1262860795-5745-6-git-send-email-mitake@dcl.info.waseda.ac.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1262860795-5745-6-git-send-email-mitake@dcl.info.waseda.ac.jp> User-Agent: Mutt/1.5.20 (2009-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1658 Lines: 43 * Hitoshi Mitake wrote: > This patch adds __FILE__ and __LINE__ to arguments passed for > __mutex_init() called in __class_register(). > This affects to lockdep_map of class_mutex of struct class_private, > and these will be used to make trace lock events more human friendly. > > Signed-off-by: Hitoshi Mitake > Cc: Peter Zijlstra > Cc: Paul Mackerras > Cc: Frederic Weisbecker > Cc: Greg Kroah-Hartman > --- > drivers/base/class.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/drivers/base/class.c b/drivers/base/class.c > index 161746d..cc0630f 100644 > --- a/drivers/base/class.c > +++ b/drivers/base/class.c > @@ -162,7 +162,8 @@ int __class_register(struct class *cls, struct lock_class_key *key) > klist_init(&cp->class_devices, klist_class_dev_get, klist_class_dev_put); > INIT_LIST_HEAD(&cp->class_interfaces); > kset_init(&cp->class_dirs); > - __mutex_init(&cp->class_mutex, "struct class mutex", key); > + __mutex_init(&cp->class_mutex, "struct class mutex", key, > + __FILE__, __LINE__); > error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name); > if (error) { > kfree(cp); Greg, any objection to this type of embellishment of lock data that comes from the driver core? Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/