platform_system_core/libprocessgroup/cgrouprc
Suren Baghdasaryan 7f19b1e6de libprocessgroup: introduce optional attribute for cgroup controllers
Memory cgroup controller is not used by high-end Android devices and is
disabled in Android kernels 5.10+, however Android Go devices still
require this controller.
Similarly schedtune controller is being replaced with cpu controller's
utilclamp feature, however some devices are using older kernels which
only support schedtune.
To prevent spamming logcat with errors we need a way to mark a
controller optional in such cases without removing it from
cgroups.json file.
Introduce "Optional" attribute to cgroup controller's cgroups.json
description to accomodate these cases. When an optional controller
fails to mount due to lack of support in the kernel it will log an
informational message without generating further errors.

Bug: 181866655
Test: boot and observe libprocessgroup messages in logcat
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ib5bcfdd8d338704f3f9d8b326d8ddd88b67915a1
2021-03-11 17:42:30 +00:00
..
include/android libprocessgroup: introduce optional attribute for cgroup controllers 2021-03-11 17:42:30 +00:00
Android.bp [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
cgroup_controller.cpp Revive ACgroupController_getFlags LLNDK function to detect missing cgroups 2020-01-29 17:24:06 +00:00
cgroup_file.cpp libprocessgroup: Add libcgrouprc 2019-04-02 22:31:57 -07:00
cgrouprc_internal.h libprocessgroup: Add libcgrouprc 2019-04-02 22:31:57 -07:00
libcgrouprc.map.txt Symbol files describing APIs across updatable components are reviewed 2021-02-04 21:05:21 +09:00