commit f9ef487d3e8736e259e1cb11b45e47fee17d48d3
author Brian Geffon <bgeffon@chromium.org> Sat Aug 22 05:40:19 2020
committer Commit Bot <commit-bot@chromium.org> Sat Aug 22 05:40:19 2020
tree 064535889cec56c35070c85f36b8625817857e6a
parent c19acec814787845f1496deceb9047a497c0b18e

CrOS Memory: PM: Add ARC processes to WorkingSetTrim.

This CL is the equivalent for per-process reclaim for ARC++, which is also referred to as WorkingSetTrim (this is the name Windows used in Chrome).

ARC++ apps can be reclaimed when the system is under memory pressure. The following tunables exist to control this behavior:
  - Limit the frequency at which we fetch the ARC process list.
  - Limit the frequency at which an individual ARC app may be reclaimed.
  - Specify the amount of time an app must have been inactive to be reclaimed.
  - Specify the maximum number of individual ARC apps which can be reclaimed per round.
- Control whether both system processes or apps are reclaimed.

Again this only applies when the system is under moderate memory pressure, when there is no memory pressure we will never reclaim ARC apps.

BUG=chromium:973963

Change-Id: I211590b123dfff5aaa5738d3025d1eb830fac427
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335816
Commit-Queue: Brian Geffon <bgeffon@chromium.org>
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Reviewed-by: Yury Khmel <khmel@chromium.org>
Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800821}