# 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
    write /dev/cpuset/foreground/cpuset.cpus 0
    write /dev/cpuset/foreground/cpuset.mems 0
    mkdir /dev/cpuset/foreground/boost
    write /dev/cpuset/foreground/boost/cpus 0
    write /dev/cpuset/foreground/boost/mems 0
    write /dev/cpuset/foreground/boost/cpuset.cpus 0
    write /dev/cpuset/foreground/boost/cpuset.mems 0
    mkdir /dev/cpuset/background
    write /dev/cpuset/background/cpus 0
    write /dev/cpuset/background/mems 0
    write /dev/cpuset/background/cpuset.cpus 0
    write /dev/cpuset/background/cpuset.mems 0

    # 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
    write /dev/cpuset/system-background/cpuset.cpus 0
    write /dev/cpuset/system-background/cpuset.mems 0