tree 350c33f08e3259338090afcb2af6c8657a99acb4
parent 1a317133517c75d686d8aa8d15507cc8b791d2e6
author Eric Jeong <ericjeong@google.com> 1631656795 -0700
committer Eric Jeong <ericjeong@google.com> 1632270792 -0700

Use epoll to monitor sysfs in carpowerpolicyd

- inotify doesn't work for sysfs files. Instead, epoll should be used.
- SilentModeHandlerTest#TestSilentModeHwStateMonitoring is removed
because sysfs or socket file cannot be created by unit tests.
- pm_silentmode_kernel is renamed to pm_silentmode_kernel_state.
- SysfsMonitor will be wrapped by jni to serve CarPowerManagementService
in the coming CL.

Bug: 178843534
Test: atest carpowerpolicyserver_test libsysfsmonitor_test
Change-Id: I1f34487ae4bba9a9b9c9fdee60dd17c922585450
Merged-In: I1f34487ae4bba9a9b9c9fdee60dd17c922585450
(cherry picked from commit 01a3e598b912375eb62b671caf9ba29251975de1)