From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765451AbZDHNHf (ORCPT ); Wed, 8 Apr 2009 09:07:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1765354AbZDHNDg (ORCPT ); Wed, 8 Apr 2009 09:03:36 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:54125 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1765343AbZDHNDd (ORCPT ); Wed, 8 Apr 2009 09:03:33 -0400 Message-Id: <20090408130409.036984214@chello.nl> References: <20090408130124.715559390@chello.nl> User-Agent: quilt/0.46-1 Date: Wed, 08 Apr 2009 15:01:29 +0200 From: Peter Zijlstra To: Ingo Molnar Cc: Paul Mackerras , Corey Ashford , linux-kernel@vger.kernel.org, Peter Zijlstra Subject: [PATCH 5/9] perf_counter: add some comments Content-Disposition: inline; filename=perf_counter-more-comments.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 Add a few comments because I was forgetting what field what for what functionality. Signed-off-by: Peter Zijlstra --- include/linux/perf_counter.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) Index: linux-2.6/include/linux/perf_counter.h =================================================================== --- linux-2.6.orig/include/linux/perf_counter.h +++ linux-2.6/include/linux/perf_counter.h @@ -347,10 +347,12 @@ struct file; struct perf_mmap_data { struct rcu_head rcu_head; - int nr_pages; - atomic_t wakeup; - atomic_t head; - atomic_t events; + int nr_pages; /* nr of data pages */ + + atomic_t wakeup; /* POLL_ for wakeups */ + atomic_t head; /* write position */ + atomic_t events; /* event limit */ + struct perf_counter_mmap_page *user_page; void *data_pages[0]; }; --