linux-kernel - Re: SLUB: purpose of sysfs events on cache creation/removal

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Date:   Wed, 4 Dec 2019 14:28:12 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Christopher Lameter <cl@...ux.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: SLUB: purpose of sysfs events on cache creation/removal

On Wed 27-11-19 18:43:17, Michal Hocko wrote:
> On Wed 27-11-19 16:26:11, Cristopher Lameter wrote:
> > On Wed, 27 Nov 2019, Michal Hocko wrote:
> > 
> > > Would you mind a patch that would add a kernel command line parameter
> > > that would work like memcg_sysfs_enabled? The default for the config
> > > would be on. Or it would be preferrable to simply drop only events?
> > 
> > Just drop the events may be best. Then we know if someone is using it.
> 
> I would be worried that a lack of events might be surprising and a
> potential userspace wouldn't know that something has changed.

It would be great to land with some decision here.
-- 
Michal Hocko
SUSE Labs