From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031887AbWLGJ2t (ORCPT ); Thu, 7 Dec 2006 04:28:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031883AbWLGJ2t (ORCPT ); Thu, 7 Dec 2006 04:28:49 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:45565 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031888AbWLGJ2s (ORCPT ); Thu, 7 Dec 2006 04:28:48 -0500 Date: Thu, 7 Dec 2006 10:27:26 +0100 From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Andrew Morton Subject: [patch] lockdep: improve lockdep_reset() Message-ID: <20061207092726.GA1103@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -5.9 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-5.9 required=5.9 tests=ALL_TRUSTED,BAYES_00 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0050] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Subject: [patch] lockdep: improve lockdep_reset() From: Ingo Molnar clear all the chains during lockdep_reset(). This fixes some locking-selftest false positives i saw on -rt. (never saw those on mainline though, but it could happen.) Signed-off-by: Ingo Molnar --- kernel/lockdep.c | 3 +++ 1 file changed, 3 insertions(+) Index: linux/kernel/lockdep.c =================================================================== --- linux.orig/kernel/lockdep.c +++ linux/kernel/lockdep.c @@ -2438,6 +2438,7 @@ EXPORT_SYMBOL_GPL(lock_release); void lockdep_reset(void) { unsigned long flags; + int i; raw_local_irq_save(flags); current->curr_chain_key = 0; @@ -2448,6 +2449,8 @@ void lockdep_reset(void) nr_softirq_chains = 0; nr_process_chains = 0; debug_locks = 1; + for (i = 0; i < CHAINHASH_SIZE; i++) + INIT_LIST_HEAD(chainhash_table + i); raw_local_irq_restore(flags); } ----- End forwarded message -----