linux-kernel - Re: [PATCH 3/4] NOMMU: Make it possible to get the per-task stack usage through /proc for NOMMU

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Date:	Thu, 24 Sep 2009 18:20:14 +0100
From:	David Howells <dhowells@...hat.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	dhowells@...hat.com, torvalds@...l.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, Mike Frysinger <vapier@...too.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Robin Getz <rgetz@...ckfin.uclinux.org>
Subject: Re: [PATCH 3/4] NOMMU: Make it possible to get the per-task stack usage through /proc for NOMMU

David Howells <dhowells@...hat.com> wrote:

> Make it possible to get the per-task stack usage through /proc on a NOMMU
> system.  This is required because walk_page_range() doesn't work on NOMMU.
> 
> 	# grep "Stack usage:" /proc/*/status
> 	/proc/1/status:Stack usage:	2 kB
> 	/proc/56/status:Stack usage:	2 kB
> 	/proc/57/status:Stack usage:	1 kB
> 	/proc/58/status:Stack usage:	2 kB
> 	/proc/59/status:Stack usage:	5 kB
> 	/proc/self/status:Stack usage:	1 kB
> 
> I've only tested it with ELF-FDPIC, though it should work with FLAT too.

Ignore this patch, please.  It only works for single-threaded processes.

David
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