linux-kernel - Re: [PATCH 3/3] mm/sched: memdelay: memory health interface for systems and workloads

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Message-ID: <20170813145227.eblt2ihn6wlqmcyn@hirez.programming.kicks-ass.net>
Date:   Sun, 13 Aug 2017 16:52:27 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 3/3] mm/sched: memdelay: memory health interface for
 systems and workloads

On Tue, Aug 01, 2017 at 08:26:34AM -0400, Johannes Weiner wrote:
> On Tue, Aug 01, 2017 at 09:57:28AM +0200, Peter Zijlstra wrote:

> > And you haven't even defined wth a memdelay section is yet..
> 
> It's what a task is in after it calls memdelay_enter() and before it
> calls memdelay_leave().

Urgh, yes that makes it harder to reusing existing bits.. although
delayacct seems to do something vaguely similar. I've never really
looked at that, but if you can reuse/merge that would of course be good.