lkml.org 
[lkml]   [2017]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/2] mm: Consolidate page table accounting
From
Date
On 10/04/2017 10:06 PM, Kirill A. Shutemov wrote:
> This patch switches page table accounting to single counter from
> three -- nr_ptes, nr_pmds and nr_puds.
>
> mm->pgtables_bytes is now used to account page table levels. We use
> bytes, because page table size for different levels of page table tree
> may be different.
>
> The change has user-visible effect: we don't have VmPMD and VmPUD
> reported in /proc/[pid]/status. Not sure if anybody uses them.
> (As alternative, we can always report 0 kB for them.)
>
> OOM-killer report is also slightly changed: we now report pgtables_bytes
> instead of nr_ptes, nr_pmd, nr_puds.

Could you please mention the motivation of doing this ? Why we are
consolidating the counters which also changes /proc/ interface as
well as OOM report ? What is the benefit ?

\
 
 \ /
  Last update: 2017-10-05 07:09    [W:0.089 / U:0.988 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site