linux-kernel - Re: [PATCH] Mark thread stack correctly in proc/<pid>/maps

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Message-ID: <CAAHN_R0ihoA6K8w53ToRD1xew9NWk-bJAZ=U0+hgRV3=0FpVDg@mail.gmail.com>
Date:	Fri, 24 Feb 2012 11:17:48 +0530
From:	Siddhesh Poyarekar <siddhesh.poyarekar@...il.com>
To:	Mike Frysinger <vapier@...too.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, Jamie Lokier <jamie@...reable.org>
Subject: Re: [PATCH] Mark thread stack correctly in proc/<pid>/maps

On Fri, Feb 24, 2012 at 5:17 AM, Mike Frysinger <vapier@...too.org> wrote:
> i don't suppose we could have it say "[tid stack]" rather than "[stack]" ?  or
> perhaps even "[stack tid:%u]" with replacing %u with the tid ?

Why do we need to differentiate a thread stack from a process stack?
If someone really wants to know, the main stack is the last one since
it doesn't look like mmap allocates anything above the stack right
now.

I like the idea of marking all stack vmas with their task ids but it
will most likely break procps. Besides, I think it could be done
within procps with this change rather than having the kernel do it.

-- 
Siddhesh Poyarekar
http://siddhesh.in
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