Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b7893e6f authored by James Hawkins's avatar James Hawkins
Browse files

bootstat: Fix false metrics due to soft reboots. 

Use a flag to enable/disable logging metrics, set to false during soft
reboots.

Bug: 32807863
Change-Id: Ib1359327af4e18d40400c29961c454f7be1b8d0c
Test: None
(cherry picked from commit 800ceb45)
parent 00d5dad5

bootstat/bootstat.rc

+19 −1
Original line number Diff line number Diff line
@@ -11,8 +11,26 @@ on post-fs-data 
on post-fs-data && property:init.svc.bootanim=running

    exec - root root -- /system/bin/bootstat -r post_decrypt_time_elapsed



# sys.logbootcomplete is a signal to enable the bootstat logging mechanism.

# This signaling is necessary to prevent logging boot metrics after a soft

# reboot (e.g., adb shell stop && adb shell start).  /proc/uptime is not reset

# during a soft reboot, which leads to false boot time metrics being reported.

#

# The 'on boot' event occurs once per hard boot (device power on), which

# switches the flag on. If the device performs a soft reboot, the flag is

# switched off and cannot be switched on until the device hard boots again.



# Enable bootstat logging on boot.

on boot

    setprop sys.logbootcomplete 1



# Disable further bootstat logging on a soft reboot. A soft reboot is

# signaled by the zygote stopping.

on property:init.svc.zygote=stopping

    setprop sys.logbootcomplete 0



# Record boot complete metrics.

on property:sys.boot_completed=1

on property:sys.boot_completed=1 && property:sys.logbootcomplete=1

    # Record boot_complete and related stats (decryption, etc).

    exec - root root -- /system/bin/bootstat --record_boot_complete