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Commit 8376d87e authored by Treehugger Robot's avatar Treehugger Robot Committed by Gerrit Code Review
Browse files

Merge "Let init mount/unmount debugfs for non-user builds"

parents bedae391 fb921a1c

init/init.cpp

+15 −0
Original line number Diff line number Diff line
@@ -878,6 +878,21 @@ int SecondStageMain(int argc, char** argv) { 
    auto is_installed = android::gsi::IsGsiInstalled() ? "1" : "0";

    SetProperty(gsi::kGsiInstalledProp, is_installed);



    /*

     * For debug builds of S launching devices, init mounts debugfs for

     * enabling vendor debug data collection setup at boot time. Init will unmount it on

     * boot-complete after vendor code has performed the required initializations

     * during boot. Dumpstate will then mount debugfs in order to read data

     * from the same using the dumpstate HAL during bugreport creation.

     * Dumpstate will also unmount debugfs after bugreport creation.

     * first_api_level comparison is done here instead

     * of init.rc since init.rc parser does not support >/< operators.

     */

    auto api_level = android::base::GetIntProperty("ro.product.first_api_level", 0);

    bool is_debuggable = android::base::GetBoolProperty("ro.debuggable", false);

    auto mount_debugfs = (is_debuggable && (api_level >= 31)) ? "1" : "0";

    SetProperty("init.mount_debugfs", mount_debugfs);



    am.QueueBuiltinAction(SetupCgroupsAction, "SetupCgroups");

    am.QueueBuiltinAction(SetKptrRestrictAction, "SetKptrRestrict");

    am.QueueBuiltinAction(TestPerfEventSelinuxAction, "TestPerfEventSelinux");

rootdir/init.rc

+7 −0
Original line number Diff line number Diff line
@@ -934,6 +934,9 @@ on boot && property:ro.config.low_ram=true 
    write /proc/sys/vm/dirty_expire_centisecs 200

    write /proc/sys/vm/dirty_background_ratio  5



on property:sys.boot_completed=1 && property:init.mount_debugfs=1

   umount /sys/kernel/debug



on boot

    # basic network init

    ifup lo
@@ -1202,6 +1205,10 @@ on userspace-reboot-resume 
on property:sys.boot_completed=1 && property:sys.init.userspace_reboot.in_progress=1

  setprop sys.init.userspace_reboot.in_progress ""



on early-init && property:init.mount_debugfs=1

    mount debugfs debugfs /sys/kernel/debug

    chmod 0755 /sys/kernel/debug



# Migrate tasks again in case kernel threads are created during boot

on property:sys.boot_completed=1

  copy_per_line /dev/cpuctl/tasks /dev/cpuctl/system/tasks