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Commit 8dbd12b9 authored by Wei Wang's avatar Wei Wang
Browse files

init.rc: set initial cpuset to all cores 

Starting zygote early requires cpuset to be initialized to all cores for
foreground cpuset. Change to expolit all cores by default at boot and
let device manufacturers override to proper values in device specific
init script.

Bug: 36576280
Test: marlin boot fast and checked cpuset during early boot
Change-Id: I2c1ce0630e58a7b04d1a453c6740d3f0bce9de9f
(cherry picked from commit 2e83b86a)
parent 54cd7e0d

rootdir/init.rc

+10 −10
Original line number Diff line number Diff line
@@ -157,25 +157,25 @@ on init 
    # this ensures that the cpusets are present and usable, but the device's

    # init.rc must actually set the correct cpus

    mkdir /dev/cpuset/foreground

    write /dev/cpuset/foreground/cpus 0

    write /dev/cpuset/foreground/mems 0

    copy /dev/cpuset/cpus /dev/cpuset/foreground/cpus

    copy /dev/cpuset/mems /dev/cpuset/foreground/mems

    mkdir /dev/cpuset/foreground/boost

    write /dev/cpuset/foreground/boost/cpus 0

    write /dev/cpuset/foreground/boost/mems 0

    copy /dev/cpuset/cpus /dev/cpuset/foreground/boost/cpus

    copy /dev/cpuset/mems /dev/cpuset/foreground/boost/mems

    mkdir /dev/cpuset/background

    write /dev/cpuset/background/cpus 0

    write /dev/cpuset/background/mems 0

    copy /dev/cpuset/cpus /dev/cpuset/background/cpus

    copy /dev/cpuset/mems /dev/cpuset/background/mems



    # system-background is for system tasks that should only run on

    # little cores, not on bigs

    # to be used only by init, so don't change system-bg permissions

    mkdir /dev/cpuset/system-background

    write /dev/cpuset/system-background/cpus 0

    write /dev/cpuset/system-background/mems 0

    copy /dev/cpuset/cpus /dev/cpuset/system-background/cpus

    copy /dev/cpuset/mems /dev/cpuset/system-background/mems



    mkdir /dev/cpuset/top-app

    write /dev/cpuset/top-app/cpus 0

    write /dev/cpuset/top-app/mems 0

    copy /dev/cpuset/cpus /dev/cpuset/top-app/cpus

    copy /dev/cpuset/mems /dev/cpuset/top-app/mems



    # change permissions for all cpusets we'll touch at runtime

    chown system system /dev/cpuset