From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755351AbZF2IZU (ORCPT ); Mon, 29 Jun 2009 04:25:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753199AbZF2IZJ (ORCPT ); Mon, 29 Jun 2009 04:25:09 -0400 Received: from hera.kernel.org ([140.211.167.34]:53982 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752972AbZF2IZH (ORCPT ); Mon, 29 Jun 2009 04:25:07 -0400 Date: Mon, 29 Jun 2009 08:24:31 GMT From: tip-bot for Li Zefan To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, fweisbec@gmail.com, rostedt@goodmis.org, lizf@cn.fujitsu.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, fweisbec@gmail.com, lizf@cn.fujitsu.com, rostedt@goodmis.org, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <4A48735E.9050002@cn.fujitsu.com> References: <4A48735E.9050002@cn.fujitsu.com> Subject: [tip:tracing/urgent] tracing/fastboot: Document the need of initcall_debug Message-ID: Git-Commit-ID: 238a24f626628cb16a3015f332d649f08246ca89 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Mon, 29 Jun 2009 08:24:32 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 238a24f626628cb16a3015f332d649f08246ca89 Gitweb: http://git.kernel.org/tip/238a24f626628cb16a3015f332d649f08246ca89 Author: Li Zefan AuthorDate: Mon, 29 Jun 2009 15:55:10 +0800 Committer: Ingo Molnar CommitDate: Mon, 29 Jun 2009 10:22:10 +0200 tracing/fastboot: Document the need of initcall_debug To use boot tracer, one should pass initcall_debug as well as ftrace=initcall to the command line. Signed-off-by: Li Zefan Cc: Frederic Weisbecker Cc: Steven Rostedt LKML-Reference: <4A48735E.9050002@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- kernel/trace/Kconfig | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 1551f47..019f380 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -226,13 +226,13 @@ config BOOT_TRACER the timings of the initcalls and traces key events and the identity of tasks that can cause boot delays, such as context-switches. - Its aim is to be parsed by the /scripts/bootgraph.pl tool to + Its aim is to be parsed by the scripts/bootgraph.pl tool to produce pretty graphics about boot inefficiencies, giving a visual representation of the delays during initcalls - but the raw /debug/tracing/trace text output is readable too. - You must pass in ftrace=initcall to the kernel command line - to enable this on bootup. + You must pass in initcall_debug and ftrace=initcall to the kernel + command line to enable this on bootup. config TRACE_BRANCH_PROFILING bool