mkdir -p /cgroup2
mount -t cgroup2 none /cgroup2
echo '+cpuset' > '/cgroup2/cgroup.subtree_control'
echo '+cpu' > '/cgroup2/cgroup.subtree_control'
echo '+io' > '/cgroup2/cgroup.subtree_control'
echo '+memory' > '/cgroup2/cgroup.subtree_control'
echo '+hugetlb' > '/cgroup2/cgroup.subtree_control'
echo '+pids' > '/cgroup2/cgroup.subtree_control'
echo '+rdma' > '/cgroup2/cgroup.subtree_control'
mkdir -p /cgroup2/kbuild.1
echo 123695058124 > '/cgroup2/kbuild.1/memory.high'
echo 68719476736 > '/cgroup2/kbuild.1/memory.low'
echo max > '/cgroup2/kbuild.1/memory.max'
echo 10000 > '/cgroup2/kbuild.1/pids.max'
echo 3909 > '/cgroup2/kbuild.1/cgroup.procs'

for cpu_dir in /sys/devices/system/cpu/cpu[0-9]*
do
	online_file="$cpu_dir"/online
	[ -f "$online_file" ] && [ "$(cat "$online_file")" -eq 0 ] && continue

	file="$cpu_dir"/cpufreq/scaling_governor
	[ -f "$file" ] && echo "performance" > "$file"
done

cd /lkp/benchmarks/kbuild/linux
make mrproper
make defconfig
scripts/config --file .config --disable CONFIG_UNUSED_SYMBOLS
scripts/config --file .config --enable CONFIG_TRIM_UNUSED_KSYMS
make -j 44 autoksyms_recursive