linux-kernel - Re: [PATCH] mm: show stats for non-default hugepage sizes in /proc/meminfo

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Message-ID: <20171113181105.GA27034@castle>
Date:   Mon, 13 Nov 2017 18:11:12 +0000
From:   Roman Gushchin <guro@...com>
To:     Dave Hansen <dave.hansen@...el.com>
CC:     <linux-mm@...ck.org>, Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Andrea Arcangeli <aarcange@...hat.com>, <kernel-team@...com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: show stats for non-default hugepage sizes in
 /proc/meminfo

On Mon, Nov 13, 2017 at 09:06:32AM -0800, Dave Hansen wrote:
> On 11/13/2017 08:03 AM, Roman Gushchin wrote:
> > To solve this problem, let's display stats for all hugepage sizes.
> > To provide the backward compatibility let's save the existing format
> > for the default size, and add a prefix (e.g. 1G_) for non-default sizes.
> 
> Is there something keeping you from using the sysfs version of this
> information?

Just answered the same question to Michal.

In two words: it would be nice to have a high-level overview of
memory usage in the system in /proc/meminfo. 

Thanks!