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platform_system_core
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bootstat: Update boot reason property earlier 

bootstat updates boot reason upon boot_complete, however users of the
updated properties e.g. getLastShutdownReason from PowerManager could
be called before boot_complete. This introduces a inconsistency and
racing for those APIs.

In this CL, we change boot reason to be updated at the same time when
zygote starts where persist properties have been loaded already. Also
the initialization of bootloader's boot reason is pulled into post-fs
where all kernel command line arguments have been parsed in init already.

Bug: 122696730
Bug: 119509425
Test: trigger thermal shutdown and see warnings
Test: verify boot reason properties updated correctly post boot
Change-Id: Ia393b98ea072bc0ae6e4110d111393b34be0ee5d
Signed-off-by: Wei Wang <wvw@google.com>
This commit is contained in:
Wei Wang 2019-02-07 10:05:42 -08:00
parent 708d45979c
commit 4e9c653c93
1 changed files with 11 additions and 4 deletions
bootstat
bootstat.rc

15
bootstat/bootstat.rc
View File

@ -1,7 +1,9 @@
# This file is the LOCAL_INIT_RC file for the bootstat command.
# mirror bootloader boot reason to system boot reason
on property:ro.boot.bootreason=*
# Mirror bootloader boot reason to system boot reason
# ro.boot.bootreason should be set by init already
# before post-fs trigger
on post-fs && property:ro.boot.bootreason=*
setprop sys.boot.reason ${ro.boot.bootreason}
on post-fs-data
@ -66,11 +68,16 @@ on boot
on property:init.svc.zygote=stopping
setprop sys.logbootcomplete 0
# Set boot reason
on zygote-start
# Converts bootloader boot reason and persist.sys.boot.reason to system boot reason
# Need go after persist peroperties are loaded which is right before zygote-start trigger
exec_background - system log -- /system/bin/bootstat --set_system_boot_reason
# Record boot complete metrics.
on property:sys.boot_completed=1 && property:sys.logbootcomplete=1
# Converts bootloader boot reason to system boot reason
# Record boot_complete and related stats (decryption, etc).
# Record the boot reason.
# Record time since factory reset.
# Log all boot events.
exec_background - system log -- /system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l
exec_background - system log -- /system/bin/bootstat --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l