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Commit 50fd8221 authored by T.J. Mercier's avatar T.J. Mercier
Browse files

init: Remove schedtune support 

Schedtune was an out of tree cgroup controller present in Android
kernels up to 4.19. It was replaced with uclamp and the cpu controller.
Now that 4.19 is EOL and unsupported, and schedtune is not present in
any supported Android kernels, remove the userspace support for
schedtune.

Bug: 362504801
Change-Id: Iab7b7295d1fb443209d5868ac5c65dca0aabfbab
parent aa56f29f

init/service_parser.cpp

+0 −3
Original line number Diff line number Diff line
@@ -538,12 +538,9 @@ Result<void> ServiceParser::ParseUser(std::vector<std::string>&& args) { 
// when we migrate to cgroups v2 while these hardcoded paths stay the same.

static std::optional<const std::string> ConvertTaskFileToProfile(const std::string& file) {

    static const std::map<const std::string, const std::string> map = {

            {"/dev/stune/top-app/tasks", "MaxPerformance"},

            {"/dev/stune/foreground/tasks", "HighPerformance"},

            {"/dev/cpuset/camera-daemon/tasks", "CameraServiceCapacity"},

            {"/dev/cpuset/foreground/tasks", "ProcessCapacityHigh"},

            {"/dev/cpuset/system-background/tasks", "ServiceCapacityLow"},

            {"/dev/stune/nnapi-hal/tasks", "NNApiHALPerformance"},

            {"/dev/blkio/background/tasks", "LowIoPriority"},

    };

    auto iter = map.find(file);

rootdir/init.rc

+0 −49
Original line number Diff line number Diff line
@@ -112,37 +112,6 @@ on init 
    # Create socket dir for ot-daemon

    mkdir /dev/socket/ot-daemon 0770 thread_network thread_network



    # Create energy-aware scheduler tuning nodes

    mkdir /dev/stune/foreground

    mkdir /dev/stune/background

    mkdir /dev/stune/top-app

    mkdir /dev/stune/rt

    chown system system /dev/stune

    chown system system /dev/stune/foreground

    chown system system /dev/stune/background

    chown system system /dev/stune/top-app

    chown system system /dev/stune/rt

    chown system system /dev/stune/tasks

    chown system system /dev/stune/foreground/tasks

    chown system system /dev/stune/background/tasks

    chown system system /dev/stune/top-app/tasks

    chown system system /dev/stune/rt/tasks

    chown system system /dev/stune/cgroup.procs

    chown system system /dev/stune/foreground/cgroup.procs

    chown system system /dev/stune/background/cgroup.procs

    chown system system /dev/stune/top-app/cgroup.procs

    chown system system /dev/stune/rt/cgroup.procs

    chmod 0664 /dev/stune/tasks

    chmod 0664 /dev/stune/foreground/tasks

    chmod 0664 /dev/stune/background/tasks

    chmod 0664 /dev/stune/top-app/tasks

    chmod 0664 /dev/stune/rt/tasks

    chmod 0664 /dev/stune/cgroup.procs

    chmod 0664 /dev/stune/foreground/cgroup.procs

    chmod 0664 /dev/stune/background/cgroup.procs

    chmod 0664 /dev/stune/top-app/cgroup.procs

    chmod 0664 /dev/stune/rt/cgroup.procs



    # cpuctl hierarchy for devices using utilclamp

    mkdir /dev/cpuctl/foreground

    mkdir /dev/cpuctl/foreground_window
@@ -216,24 +185,6 @@ on init 
    chmod 0664 /dev/cpuctl/camera-daemon/tasks

    chmod 0664 /dev/cpuctl/camera-daemon/cgroup.procs



    # Create an stune group for camera-specific processes

    mkdir /dev/stune/camera-daemon

    chown system system /dev/stune/camera-daemon

    chown system system /dev/stune/camera-daemon/tasks

    chown system system /dev/stune/camera-daemon/cgroup.procs

    chmod 0664 /dev/stune/camera-daemon/tasks

    chmod 0664 /dev/stune/camera-daemon/cgroup.procs



    # Create an stune group for NNAPI HAL processes

    mkdir /dev/stune/nnapi-hal

    chown system system /dev/stune/nnapi-hal

    chown system system /dev/stune/nnapi-hal/tasks

    chown system system /dev/stune/nnapi-hal/cgroup.procs

    chmod 0664 /dev/stune/nnapi-hal/tasks

    chmod 0664 /dev/stune/nnapi-hal/cgroup.procs

    write /dev/stune/nnapi-hal/schedtune.boost 1

    write /dev/stune/nnapi-hal/schedtune.prefer_idle 1



    # Create blkio group and apply initial settings.

    # This feature needs kernel to support it, and the

    # device's init.rc must actually set the correct values.