reproduce:
        git remote add amd-pstate https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git
        git fetch amd-pstate linux-next
        git checkout amd-pstate/linux-next
        b4 shazam https://lore.kernel.org/r/20241030152706.179779-2-t.v.s10123@gmail.com
        make W=1 O=/tmp/kselftest headers
        make W=1 O=/tmp/kselftest -C tools/testing/selftests
        make W=1 O=/tmp/kselftest -C tools/testing/selftests/bpf