Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932354Ab0BCJQ7 (ORCPT ); Wed, 3 Feb 2010 04:16:59 -0500 Received: from mail-bw0-f219.google.com ([209.85.218.219]:57321 "EHLO mail-bw0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756250Ab0BCJOn (ORCPT ); Wed, 3 Feb 2010 04:14:43 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=sHDyvsygyL9KJtjG8BxLoPj3kuenR31e8f9n/WayKv3srclmwEsx6G4uoJMaGI9wuI 8UVzb/KWSdeOpntKqrPONzh+WvXrjuWB+4gUEOxzXPgzaJJFX3VGpYnNCrDMUudTV17s AAk0hK/CZ0eFZpPsWvSdg3A10+9PUWe0odA1k= From: Frederic Weisbecker To: Ingo Molnar Cc: LKML , Frederic Weisbecker , Peter Zijlstra , Arnaldo Carvalho de Melo , Steven Rostedt , Paul Mackerras , Hitoshi Mitake , Li Zefan , Lai Jiangshan , Masami Hiramatsu , Jens Axboe Subject: [PATCH 04/11] tracing: Add lock class id in lock_acquire event Date: Wed, 3 Feb 2010 10:14:28 +0100 Message-Id: <1265188475-23509-5-git-send-regression-fweisbec@gmail.com> X-Mailer: git-send-email 1.6.2.3 In-Reply-To: <1265188475-23509-1-git-send-regression-fweisbec@gmail.com> References: <1265188475-23509-1-git-send-regression-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1866 Lines: 54 Add the lock class id to lock_acquire event. This will let us remove the name copy from every lock events (except lock_class_init) as we'll be able to retrieve the name of the lock class with the class id. The class id is represented by the lock name address, which is the same in the corresponding lock class. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Steven Rostedt Cc: Paul Mackerras Cc: Hitoshi Mitake Cc: Li Zefan Cc: Lai Jiangshan Cc: Masami Hiramatsu Cc: Jens Axboe --- include/trace/events/lock.h | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/include/trace/events/lock.h b/include/trace/events/lock.h index 6999f16..3c4a5c1 100644 --- a/include/trace/events/lock.h +++ b/include/trace/events/lock.h @@ -52,15 +52,18 @@ TRACE_EVENT(lock_acquire, __field(unsigned int, flags) __string(name, lock->name) __field(void *, lockdep_addr) + __field(void *, class_id) ), TP_fast_assign( __entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0); __assign_str(name, lock->name); __entry->lockdep_addr = lock; + __entry->class_id = (void *)lock->name; ), - TP_printk("%p %s%s%s", __entry->lockdep_addr, + TP_printk("%p %p %s%s%s", __entry->lockdep_addr, + __entry->class_id, (__entry->flags & 1) ? "try " : "", (__entry->flags & 2) ? "read " : "", __get_str(name)) -- 1.6.2.3 -- 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/