Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757498AbZGGPZw (ORCPT ); Tue, 7 Jul 2009 11:25:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757224AbZGGPZc (ORCPT ); Tue, 7 Jul 2009 11:25:32 -0400 Received: from mail-bw0-f225.google.com ([209.85.218.225]:39120 "EHLO mail-bw0-f225.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755771AbZGGPZb (ORCPT ); Tue, 7 Jul 2009 11:25:31 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:cc:content-type :content-transfer-encoding; b=Op2HYGyByDjNMK4CtpBxwFhMuhQK1LuUChZxroC66BL5YEkD/tQ2lirSuslVHqPN4w Udn+Gjus0wnuUKUmjePuPwjHlz47GCmk5swgvPFd9ASzVybB1KkrtpIuj9aMp64M2R1h WwvlUo3Kh+CP/aw7vrOCnSmDTWM77NDQIBH6g= MIME-Version: 1.0 From: Joao Correia Date: Tue, 7 Jul 2009 16:25:08 +0100 Message-ID: Subject: [PATCH 2/3] Increase lockdep limits: MAX_LOCK_DEPTH To: LKML Cc: Amerigo Wang , a.p.zijlstra@chello.nl Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1325 Lines: 38 (Applies to current Linus tree, as of 2.6.31-rc2) As a result of increasing MAX_STACK_TRACE_ENTRIES on the previous patch, another limit surfaced as being hit too soon. This patch increases MAX_LOCK_DEPTH, being hit by false positives, and turning off the locking correctness validator. The new value is arbitrary, but I believe the old one was too. Given the amount of changes happening with regards to the usage of lockdep, the previous limit is just too low and keeping it that way would defeat the purpose of lockdep. Signed-off-by: Joao Correia --- include/linux/sched.h | 2 +- 1 files changes, 1 insertions(+), 1 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 0085d75..304231b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1367,7 +1367,7 @@ struct task_struct { int softirq_context; #endif #ifdef CONFIG_LOCKDEP -# define MAX_LOCK_DEPTH 48UL +# define MAX_LOCK_DEPTH 96UL u64 curr_chain_key; int lockdep_depth; unsigned int lockdep_recursion; --- -- 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/