From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757563AbZKCA55 (ORCPT ); Mon, 2 Nov 2009 19:57:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757548AbZKCA5z (ORCPT ); Mon, 2 Nov 2009 19:57:55 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:57665 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1757547AbZKCA5y (ORCPT ); Mon, 2 Nov 2009 19:57:54 -0500 Message-ID: <4AEF7FDC.2040200@cn.fujitsu.com> Date: Tue, 03 Nov 2009 08:57:00 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 MIME-Version: 1.0 To: Ingo Molnar CC: Steven Rostedt , Frederic Weisbecker , Jiri Olsa , LKML Subject: [PATCH 3/3] function-graph: Allow writing the same val to set_graph_function References: <4AEF7F8A.3080300@cn.fujitsu.com> In-Reply-To: <4AEF7F8A.3080300@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org # echo 'do_open' > set_graph_function # echo 'do_open' >> set_graph_function bash: echo: write error: Invalid argument Make it valid to write the same value to set_graph_function. Signed-off-by: Li Zefan --- kernel/trace/ftrace.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index e0184b7..eaf6a4d 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2549,10 +2549,9 @@ ftrace_set_func(unsigned long *array, int *idx, char *buffer) exists = true; break; } - if (!exists) { + if (!exists) array[(*idx)++] = rec->ip; - found = 1; - } + found = 1; } } while_for_each_ftrace_rec(); -- 1.6.3