linux-kernel - Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many

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Message-ID: <20150130152859.GI15505@dhcp22.suse.cz>
Date:	Fri, 30 Jan 2015 16:28:59 +0100
From:	Michal Hocko <mhocko@...e.cz>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Vinayak Menon <vinmenon@...eaurora.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	hannes@...xchg.org, vdavydov@...allels.com, mgorman@...e.de,
	minchan@...nel.org
Subject: Re: [PATCH v2] mm: vmscan: fix the page state calculation in
 too_many_isolated

On Tue 27-01-15 10:59:59, Christoph Lameter wrote:
> On Tue, 27 Jan 2015, Michal Hocko wrote:
> 
> > I am not following. The idea was to run vmstat_shepherd in a kernel
> > thread and waking up as per defined timeout and then check need_update
> > for each CPU and call smp_call_function_single to refresh the timer
> > rather than building a mask and then calling sm_call_function_many to
> > reduce paralel contention on the shared counters.
> 
> Thats ok.

OK, I will put that on my todo list and try to find some time to
implement it.

-- 
Michal Hocko
SUSE Labs
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