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Message-ID: <alpine.DEB.2.20.1601281047050.12779@east.gentwo.org>
Date: Thu, 28 Jan 2016 10:48:09 -0600 (CST)
From: Christoph Lameter <cl@...ux.com>
To: akpm@...ux-foundation.org, Michal Hocko <mhocko@...nel.org>
cc: Mike Galbraith <umgwanakikbuti@...il.com>,
Peter Zijlstra <peterz@...radead.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] vmstat: make vmstat_update deferrable (was: Re: [PATCH]
mm, vmstat: make quiet_vmstat lighter) path cycle muncher (vmstat: make
vmstat_updater deferrable) again and shut down on idle)
On Thu, 28 Jan 2016, Michal Hocko wrote:
> down on idle") made vmstat_shepherd deferrable. vmstat_update itself
> is still using standard timer which might interrupt idle task. This
> is possible because "mm, vmstat: make quiet_vmstat lighter" removed
> cancel_delayed_work from the quiet_vmstat. Change vmstat_work to
> use DEFERRABLE_WORK to prevent from pointless wakeups from the idle
> context.
Acked-by: Christoph Lameter <cl@...ux.com>
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