linux-kernel - Re: [patch] procfs: provide stack information for threads

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Message-Id: <1244116589.32392.15.camel@wall-e>
Date:	Thu, 04 Jun 2009 13:56:29 +0200
From:	Stefani Seibold <stefani@...bold.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, Ingo Molnar <mingo@...e.hu>,
	Joerg Engel <joern@...fs.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch] procfs: provide stack information for threads


Am Donnerstag, den 04.06.2009, 04:37 -0700 schrieb Andrew Morton:
> On Thu, 04 Jun 2009 13:23:48 +0200 Stefani Seibold <stefani@...bold.net> wrote:
> >  - slime done
> 
> What's "slime"?
> 

Sorry, that was a typo, should be "slim down".

> > +	for (i = vma->vm_start; i+PAGE_SIZE <= stkpage; i += PAGE_SIZE) {
> > +
> > +		page = follow_page(vma, i, 0);
> > +
> > +		if (!IS_ERR(page) && page)
> 
> Shouldn't this be !page?
> 

No, this is correct... I walk through the top of vma to the first mapped
page, this is the high water mark of the stack.

> > +					unsigned long stack_start;
> > +
> > +					stack_start =
> > +						((struct proc_maps_private *)
> > +						m->private)->task->stack_start;
> 
> I'd suggested a clearer/cleaner way of implementing this.
> 

Sorry, i can not see a problem here. In your last posting you wrote
thats okay! And i have no idea how to make this expression
clearer/cleaner.

> > Signed-off-by: Stefani Seibold <stefani@...bold.net>
> 
> This should be positioned at the end of the changelog, ahead of the
> patch itself.
> 

Next time i will do this, okay?


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