tree 7896fbfe0ec2eea5fb7dd587e2e9657acc97b5f0
parent 2dac833ea81fae56c01803e9c7cdd1dd81555622
author Mark Salyzyn <salyzyn@google.com> 1501878951 -0700
committer Mark Salyzyn <salyzyn@google.com> 1505233705 -0700

bootstat: introduce sys.boot.reason

Adding functionality to bootstat --record_boot_complete and
--record_boot_reason to initialize sys.boot.reason, the canonical
system boot reason.

Filter out ro.boot.bootreason oem noise into sys.boot.reason.  Add
heuristics to determine what the boot reason is, when otherwise would
be defaulting to the blunt and relatively devoid of detail catch-all
reboot reasons ("reboot", "shutdown", "cold", "warm", "hard").

boot_reason_test.sh is also a compliance test.

Test: boot_reason_test.sh all
Bug: 63736262
Change-Id: Ic9a42cccbcfc89a5c0e081ba66d577a97c8c8c76