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Subject: Re: Kernel debugging method
From: Peter Zijlstra <peterz@infradead.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Amirali Shambayati <amirali.shambayati@gmail.com>,
        linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>
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Date: Tue, 15 Feb 2011 13:03:02 +0100
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On Mon, 2011-02-14 at 07:14 +0100, Mike Galbraith wrote:
> On Sun, 2011-02-13 at 13:56 +0330, Amirali Shambayati wrote:
> > Hello all,
> > 
> > Can anybody show me a method for kernel debugging? I just want to
> > modify one file(Noop IO scheduler).
> 
> I recommend the most powerful, and easiest to use, kernel debugger known
> to man: printk :)

You've forgotten the most fundamental one, your brain! Use it, it might
surprise you ;-)