linux-kernel - Re: When and how to use ftrace?

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Message-ID: <AANLkTikSaMcKPh5GI3Tq2SZkVXsNKwE8pfR8me5IHDDv@mail.gmail.com>
Date:	Wed, 9 Jun 2010 13:32:11 +0800
From:	Ryan Wang <openspace.wang@...il.com>
To:	Steven Rostedt <srostedt@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kernelnewbies@...linux.org
Subject: Re: When and how to use ftrace?

2010/6/9 Steven Rostedt <srostedt@...hat.com>:
> On Wed, 2010-06-09 at 09:38 +0800, Ryan Wang wrote:
>> Hi all,
>>
>>        I'm new to kernel development, and I'm learning
>> ftrace recently. I have one question:
>>        When to use ftrace, or in which cases ftrace can be
>> more efficient?
>
> I can't really answer these questions without knowing what you want to
> do?
>
> ftrace allows you to see what is happening inside the kernel. What would
> you like to see?
>
> -- Steve
>
>
>

I really want to know is the differences between ftrace and other kernel debug
tools such as kdump, kdb, etc.

thanks!
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