On Wed, Jun 9, 2010 at 11:02 AM, Ryan Wang <[email protected]> wrote:

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

Lets say you want to know what ext2/ext3/ext4 functions are called when you
run mkdir command on ext2/ext3/ext4 mounted filesystem. Then you can trace
each kernel function with ftrace.

Articles on ftrace:-
http://lwn.net/Articles/365835/
http://lwn.net/Articles/366796/

With kdump you get memory dump of currently running kernel and then you
debug it.
kdb will help you to debug the currently running kernel.

I hope this clears some of your doubts.

Regards,
Neependra


>
> thanks!
>
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