linux-kernel - Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoint for x86 & x86

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Message-ID: <20101110132954.GA2101@infradead.org>
Date:	Wed, 10 Nov 2010 08:29:54 -0500
From:	Christoph Hellwig <hch@...radead.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	mingo@...e.hu, rostedt@...dmis.org, andi@...stfloor.org,
	lwoodman@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoint for x86
 & x86_64

On Wed, Nov 10, 2010 at 12:56:11PM +0100, Jiri Olsa wrote:
> +	TP_printk("task=%lx, address=%lx, regs=%lx",
> +		(unsigned long)__entry->task, (unsigned long)__entry->address,
> +			__entry->regs)

How exactly do you use the information in this trace point?  Especially
the undecoded pt_regs doesn't seem very useful to me at all.

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