linux-kernel - Re: [PATCH 1/3 staging-next] android: Collect statistics from lowmemorykiller

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Message-ID: <20170209200737.GB11098@kroah.com>
Date:   Thu, 9 Feb 2017 21:07:37 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     peter enderborg <peter.enderborg@...ymobile.com>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Arve Hjønnevåg <arve@...roid.com>,
        Riley Andrews <riandrews@...roid.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-mm@...ck.org
Subject: Re: [PATCH 1/3 staging-next] android: Collect statistics from
 lowmemorykiller

On Thu, Feb 09, 2017 at 08:26:41PM +0100, Michal Hocko wrote:
> On Thu 09-02-17 14:21:45, peter enderborg wrote:
> > This collects stats for shrinker calls and how much
> > waste work we do within the lowmemorykiller.
> 
> This doesn't explain why do we need this information and who is going to
> use it. Not to mention it exports it in /proc which is considered a
> stable user API. This is a no-go, especially for something that is still
> lingering in the staging tree without any actuall effort to make it
> fully supported MM feature. I am actually strongly inclined to simply
> drop lmk from the tree completely.

I thought that someone was working to get the "native" mm features to
work properly with the lmk "feature"  Do you recall if that work got
rejected, or just never happened?

thanks,

greg k-h