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

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Message-ID: <20191126121901.GE20912@dhcp22.suse.cz>
Date:   Tue, 26 Nov 2019 13:19:01 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Cristopher Lameter <cl@...ux.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: SLUB: purpose of sysfs events on cache creation/removal

Hi,
I have just learnt about KOBJ_{ADD,REMOVE} sysfs events triggered on
kmem cache creation/removal when SLUB is configured. This functionality
goes all the way down to initial SLUB merge. I do not see any references
in the Documentation explaining what those events are used for and
whether there are any real users.

Could you shed some more light into this?
-- 
Michal Hocko
SUSE Labs