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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: "Peter Teoh" <htmldeveloper@gmail.com>
Cc: "Steven Rostedt" <srostedt@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: Some FTRACE related question
Date: Sat, 22 Nov 2008 13:59:24 +0100	[thread overview]
Message-ID: <200811221359.24808.rjw@sisk.pl> (raw)
In-Reply-To: <804dabb00811220047q6e0f24eap23e9a7c4c7bd71b6@mail.gmail.com>

On Saturday, 22 of November 2008, Peter Teoh wrote:
> Q1:   how to use ftrace to ftrace itself?   (i would like to see some
> ftrace-triggered flow)   In view of the following patch:
> 
> http://linux.derkeiler.com/Mailing-Lists/Kernel/2008-11/msg03745.html
> 
> Is it to prevent this from being possible?

I can't really answer this, sorry.

> Q2:   how to ftrace s2ram and resume?   I attempted to do it, but the
> trace output is always filled with "resume" related functions when it
> started up, which is only logical.

The tracing is disabled during suspend/resume, so you can't.

Thanks,
Rafael

  reply	other threads:[~2008-11-22 12:59 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-22  8:47 Some FTRACE related question Peter Teoh
2008-11-22 12:59 ` Rafael J. Wysocki [this message]
2008-11-23  9:41   ` [PATCH] tracing: allow tracing of suspend/resume & hibernation code again Ingo Molnar
2008-11-23 15:37     ` Peter Teoh
2008-11-24 15:47       ` Peter Teoh
2008-12-10  3:09         ` Peter Teoh
2008-11-24 21:43     ` Steven Rostedt
2008-11-22 13:30 ` Some FTRACE related question Steven Rostedt

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