linux-kernel - Re: [RFC 1/3] /dev/low_mem

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Message-ID: <20120124154001.GB10990@amt.cnet>
Date:	Tue, 24 Jan 2012 13:40:01 -0200
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Rik van Riel <riel@...hat.com>, Minchan Kim <minchan@...nel.org>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>, leonid.moiseichuk@...ia.com,
	kamezawa.hiroyu@...fujitsu.com, mel@....ul.ie, rientjes@...gle.com,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ronen Hod <rhod@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Subject: Re: [RFC 1/3] /dev/low_mem_notify

On Tue, Jan 17, 2012 at 08:51:13PM +0200, Pekka Enberg wrote:
> Hello,
> 
> Ok, so here's a proof of concept patch that implements sample-base
> per-process free threshold VM event watching using perf-like syscall
> ABI. I'd really like to see something like this that's much more
> extensible and clean than the /dev based ABIs that people have
> proposed so far.
> 
> 			Pekka

What is the practical advantage of a syscall, again?

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