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From: Li Zefan <lizf@cn.fujitsu.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] tracing/fastboot: document the need of initcall_debug
Date: Mon, 29 Jun 2009 17:01:56 +0800	[thread overview]
Message-ID: <4A488304.9000104@cn.fujitsu.com> (raw)
In-Reply-To: <20090629082152.GA2921@elte.hu>

Ingo Molnar wrote:
> * Li Zefan <lizf@cn.fujitsu.com> wrote:
> 
>> To use boot tracer, one should pass initcall_debug as well as
>> ftrace=initcall to the command line.
> 
> I think both should be auto-enabled if BOOT_TRACER is enabled, for 
> ease of use - agreed?
> 

If both are auto-enabled, we'll always do boot tracing. But we want
BOOT_TRACER to be enabled and only enable boot tracing when it's needed.

But maybe we can make ftrace=initcall implies initcall_debug=1?


  reply	other threads:[~2009-06-29  9:01 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-29  7:55 [PATCH] tracing/fastboot: document the need of initcall_debug Li Zefan
2009-06-29  8:21 ` Ingo Molnar
2009-06-29  9:01   ` Li Zefan [this message]
2009-06-29  9:14     ` Ingo Molnar
2009-06-29 11:19       ` Frederic Weisbecker
2009-06-29 19:39         ` Ingo Molnar
2009-06-29  8:24 ` [tip:tracing/urgent] tracing/fastboot: Document " tip-bot for Li Zefan

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