init.hardware.rc: schedtune for boottime
Set stune.boost to 100 to boost process to big cores and prefer_idle to
1 to spread tasks. This saves ~370ms from kernel boot to boot_complete.
Before CL:
BootComplete : 10.046 0.067631
Post CL:
BootComplete : 9.6713 0.083226
Test: boottime
Bug: 80345258
Change-Id: I29159ba3102a23f302ddc2a2747879fd1ca39c27
diff --git a/init.hardware.rc b/init.hardware.rc
index f0a5c36..522a8ff 100644
--- a/init.hardware.rc
+++ b/init.hardware.rc
@@ -17,6 +17,10 @@
import /vendor/etc/init/hw/init.${ro.hardware}.usb.rc
on charger
+ # Set runtime stune value
+ write /dev/stune/schedtune.prefer_idle 0
+ write /dev/stune/schedtune.boost 0
+ # Offline CPUs
write /sys/devices/system/cpu/cpu2/online 0
write /sys/devices/system/cpu/cpu3/online 0
write /sys/devices/system/cpu/cpu4/online 0
@@ -80,6 +84,10 @@
write /sys/devices/system/cpu/cpufreq/policy4/schedutil/up_rate_limit_us 500
write /sys/devices/system/cpu/cpufreq/policy4/schedutil/down_rate_limit_us 20000
+ # Set boottime stune value
+ write /dev/stune/schedtune.prefer_idle 1
+ write /dev/stune/schedtune.boost 100
+
# set default schedTune value for foreground/top-app
write /dev/stune/foreground/schedtune.prefer_idle 1
write /dev/stune/top-app/schedtune.boost 10
@@ -546,6 +554,10 @@
setprop vendor.powerhal.init 1
on property:sys.boot_completed=1
+ # Set runtime stune value
+ write /dev/stune/schedtune.prefer_idle 0
+ write /dev/stune/schedtune.boost 0
+
# Enable power setting and set sys.post_boot.parsed to 1
start vendor.power_sh
