From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753772Ab3ILPE1 (ORCPT ); Thu, 12 Sep 2013 11:04:27 -0400 Received: from mail-pa0-f49.google.com ([209.85.220.49]:40087 "EHLO mail-pa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752452Ab3ILPE0 (ORCPT ); Thu, 12 Sep 2013 11:04:26 -0400 Date: Thu, 12 Sep 2013 23:04:01 +0800 From: Wang YanQing To: rostedt@goodmis.org Cc: fweisbec@gmail.com, mingo@redhat.com, linux-kernel@vger.kernel.org Subject: [PATCH]trace: fix wrong help information about snapshot Message-ID: <20130912150401.GA3960@udknight> Mail-Followup-To: Wang YanQing , rostedt@goodmis.org, fweisbec@gmail.com, mingo@redhat.com, linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cat snapshot give me: " tracer: nop * Snapshot is freed * Snapshot commands: echo 0 > snapshot : Clears and frees snapshot buffer echo 1 > snapshot : Allocates snapshot buffer, if not already allocated. Takes a snapshot of the main buffer. echo 2 > snapshot : Clears snapshot buffer (but does not allocate) (Doesn't have to be '2' works with any number that is not a '0' or '1')" But after read the code, I found the right information about "echo 2 > snapshot" should looks like below: " echo 2 > snapshot : Clears snapshot buffer (but does not free) (Doesn't have to be '2' works with any number that is not a '0' or '1')" Signed-off-by: Wang YanQing --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 7974ba2..d0da660 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2760,7 +2760,7 @@ static void show_snapshot_main_help(struct seq_file *m) seq_printf(m, "# echo 0 > snapshot : Clears and frees snapshot buffer\n"); seq_printf(m, "# echo 1 > snapshot : Allocates snapshot buffer, if not already allocated.\n"); seq_printf(m, "# Takes a snapshot of the main buffer.\n"); - seq_printf(m, "# echo 2 > snapshot : Clears snapshot buffer (but does not allocate)\n"); + seq_printf(m, "# echo 2 > snapshot : Clears snapshot buffer (but does not free)\n"); seq_printf(m, "# (Doesn't have to be '2' works with any number that\n"); seq_printf(m, "# is not a '0' or '1')\n"); } -- 1.7.12.4.dirty