Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757331AbZDXPK1 (ORCPT ); Fri, 24 Apr 2009 11:10:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752876AbZDXPKP (ORCPT ); Fri, 24 Apr 2009 11:10:15 -0400 Received: from wf-out-1314.google.com ([209.85.200.172]:30458 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751917AbZDXPKO (ORCPT ); Fri, 24 Apr 2009 11:10:14 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=OuGPwQP11PRBNHO7I4hGxsC0l4awxB897pus3BGBclgdqyAS6GfdMSPP/b3dsZXR/S nX3zgZMjv5rstwcjAyNykFSgPuL3ZLCRHU90fnAQGH7GJIYJKwkP4ikPauY0dxzKEmn5 4FXszq/+w5yp0QQ+k1A5U7gKJrL2vPBG0L4FI= From: tom.leiming@gmail.com To: mingo@elte.hu, akpm@osdl.org Cc: linux-kernel@vger.kernel.org, Ming Lei Subject: [PATCH] Documentation:lockdep-design: fix note of state bits Date: Fri, 24 Apr 2009 23:10:06 +0800 Message-Id: <1240585806-5744-1-git-send-email-tom.leiming@gmail.com> X-Mailer: git-send-email 1.6.0.GIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1742 Lines: 53 From: Ming Lei >From source code of get_usage_char(), the previous note is not correct, so fix it. static char get_usage_char(struct lock_class *class, enum lock_usage_bit bit) { char c = '.'; if (class->usage_mask & lock_flag(bit + 2))/*LOCK_ENABLED_##STATE*/ c = '+'; if (class->usage_mask & lock_flag(bit)) {/*LOCK_USED_IN_##STATE*/ c = '-'; if (class->usage_mask & lock_flag(bit + 2)) c = '?'; } return c; } note: 1),The 'bit' parameter always is passed as LOCK_USED_IN_##STATE or LOCK_USED_IN_##STATE_READ , from get_usage_chars(). Signed-off-by: Ming Lei --- Documentation/lockdep-design.txt | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/lockdep-design.txt b/Documentation/lockdep-design.txt index 938ea22..e20d913 100644 --- a/Documentation/lockdep-design.txt +++ b/Documentation/lockdep-design.txt @@ -54,9 +54,9 @@ locking error messages, inside curlies. A contrived example: The bit position indicates STATE, STATE-read, for each of the states listed above, and the character displayed in each indicates: - '.' acquired while irqs disabled - '+' acquired in irq context - '-' acquired with irqs enabled + '.' acquired while irqs disabled and not in irq context + '-' acquired in irq context + '+' acquired with irqs enabled '?' acquired in irq context with irqs enabled. Unused mutexes cannot be part of the cause of an error. -- 1.6.0.GIT -- 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/