linux-kernel - [PATCH mm-unstable v1 0/2] Track pages allocated for struct

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Message-ID: <20241031224551.1736113-1-kinseyho@google.com>
Date: Thu, 31 Oct 2024 22:45:49 +0000
From: Kinsey Ho <kinseyho@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...nel.org>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Shakeel Butt <shakeel.butt@...ux.dev>, 
	Muchun Song <muchun.song@...ux.dev>, Pasha Tatashin <pasha.tatashin@...een.com>, 
	David Rientjes <rientjes@...gle.com>, willy@...radead.org, Vlastimil Babka <vbabka@...e.cz>, 
	David Hildenbrand <david@...hat.com>, Kinsey Ho <kinseyho@...gle.com>, 
	Joel Granados <joel.granados@...nel.org>, Kaiyang Zhao <kaiyang2@...cmu.edu>, 
	Sourav Panda <souravpanda@...gle.com>, linux-kernel@...r.kernel.org, 
	cgroups@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH mm-unstable v1 0/2] Track pages allocated for struct

We noticed high overhead for pages allocated for struct swap_cgroup in
our fleet. This patchset adds the number of pages allocated for struct
swap_cgroup to vmstat. This can be a useful metric for identifying
unneeded overhead on systems which configure swap.

Before adding the new stat, Patch 1 introduces a generic system-wide
counting interface. 

Kinsey Ho (2):
  mm: add generic system-wide page counters
  mm, swap: add pages allocated for struct swap_cgroup to vmstat

 include/linux/vmstat.h | 11 +++++++++++
 mm/swap_cgroup.c       |  3 +++
 mm/vmstat.c            | 35 ++++++++++++++++++++++++++---------
 3 files changed, 40 insertions(+), 9 deletions(-)

-- 
2.47.0.163.g1226f6d8fa-goog