From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756062AbZA1OAg (ORCPT ); Wed, 28 Jan 2009 09:00:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755291AbZA1N5e (ORCPT ); Wed, 28 Jan 2009 08:57:34 -0500 Received: from casper.infradead.org ([85.118.1.10]:47086 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754242AbZA1N53 (ORCPT ); Wed, 28 Jan 2009 08:57:29 -0500 Message-Id: <20090128135459.192014630@chello.nl> References: <20090128135352.679025549@chello.nl> User-Agent: quilt/0.46-1 Date: Wed, 28 Jan 2009 14:54:11 +0100 From: Peter Zijlstra To: mingo@elte.hu Cc: linux-kernel@vger.kernel.org, npiggin@suse.de, Peter Zijlstra Subject: [PATCH 19/21] lockdep: simplify get_user_chars() Content-Disposition: inline; filename=lockdep-get_usage_chars.patch X-Bad-Reply: References but no 'Re:' in Subject. Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org there's too much repetition of code.. Signed-off-by: Peter Zijlstra --- kernel/lockdep.c | 65 ++++++++++++++++++++----------------------------------- 1 file changed, 24 insertions(+), 41 deletions(-) Index: linux-2.6/kernel/lockdep.c =================================================================== --- linux-2.6.orig/kernel/lockdep.c +++ linux-2.6/kernel/lockdep.c @@ -467,54 +467,37 @@ const char * __get_key_name(struct lockd return kallsyms_lookup((unsigned long)key, NULL, NULL, NULL, str); } -void -get_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, - char *c4, char *c5, char *c6) +static inline unsigned long lock_flag(enum lock_usage_bit bit) { - *c1 = '.', *c2 = '.', *c3 = '.', *c4 = '.', *c5 = '.', *c6 = '.'; - - if (class->usage_mask & LOCKF_USED_IN_HARDIRQ) - *c1 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ) - *c1 = '-'; + return 1UL << bit; +} - if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ) - *c2 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ) - *c2 = '-'; +static char get_usage_char(struct lock_class *class, enum lock_usage_bit bit) +{ + char c = '.'; - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ_READ) - *c3 = '-'; - if (class->usage_mask & LOCKF_USED_IN_HARDIRQ_READ) { - *c3 = '+'; - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ_READ) - *c3 = '?'; - } - - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ_READ) - *c4 = '-'; - if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ_READ) { - *c4 = '+'; - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ_READ) - *c4 = '?'; + if (class->usage_mask & lock_flag(bit + 2)) + c = '+'; + if (class->usage_mask & lock_flag(bit)) { + c = '-'; + if (class->usage_mask & lock_flag(bit + 2)) + c = '?'; } - if (class->usage_mask & LOCKF_USED_IN_RECLAIM_FS) - *c5 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS) - *c5 = '-'; + return c; +} - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS_READ) - *c6 = '-'; - if (class->usage_mask & LOCKF_USED_IN_RECLAIM_FS_READ) { - *c6 = '+'; - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS_READ) - *c6 = '?'; - } +void +get_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, + char *c4, char *c5, char *c6) +{ + *c1 = get_usage_char(class, LOCK_USED_IN_HARDIRQ); + *c2 = get_usage_char(class, LOCK_USED_IN_SOFTITQ); + *c3 = get_usage_char(class, LOCK_USED_IN_HARDIRQ_READ); + *c4 = get_usage_char(class, LOCK_USED_IN_SOFTITQ_READ); + *c5 = get_usage_char(class, LOCK_USED_IN_RECLAIM_FS); + *c6 = get_usage_char(class, LOCK_USED_IN_RECLAIM_FS_READ); } static void print_lock_name(struct lock_class *class) --