linux-kernel - Re: Time Track

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Message-ID: <4D38A687.7010300@caviumnetworks.com>
Date:	Thu, 20 Jan 2011 13:17:59 -0800
From:	David Daney <ddaney@...iumnetworks.com>
To:	Artur Baruchi <mail.baruchi@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Time Track

On 01/20/2011 11:50 AM, Artur Baruchi wrote:
> Hi Guys.
>
> I would like to know how long a function in a ginven kernel module is
> taking to run. Is there a way to measure this?

Of course there is.  Use the Function Graph tracer.

An alternative would be a kretprobe

> I've checked in some
> books about kernel programming but dindt find it.
>

Study ftrace and kprobes.

David Daney

> Thanks in advance.
>
> Att.
> Artur Baruchi
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