linux-kernel - Re: [PATCH] Add trace event for munmap

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Message-ID: <20100708144407.GA8141@us.ibm.com>
Date:	Thu, 8 Jul 2010 15:44:07 +0100
From:	Eric B Munson <ebmunson@...ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Eric B Munson <emunson@...bm.net>, akpm@...ux-foundation.org,
	mingo@...hat.com, hugh.dickins@...cali.co.uk, riel@...hat.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, anton@...ba.org
Subject: Re: [PATCH] Add trace event for munmap

On Thu, 08 Jul 2010, Peter Zijlstra wrote:

> On Thu, 2010-07-08 at 15:05 +0100, Eric B Munson wrote:
> > This patch adds a trace event for munmap which will record the starting
> > address of the unmapped area and the length of the umapped area.  This
> > event will be used for modeling memory usage.
> 
> Does it make sense to couple this with a mmap()/mremap()/brk()
> tracepoint?
> 

We were using the mmap information collected by perf, but I think
those might also be useful so I will send a followup patch to add
them.

-- 
Eric B Munson
IBM Linux Technology Center
emunson@...bm.net


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