While debugging the selftests/bpf: get_cgroup_id_user test failure on arm64 where the test is expecting trace file /sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id but this path not enabled after enabling required kernel configuration also. CONFIG_FTRACE_SYSCALLS=y
strace output: open(\"/sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id\", O_RDONLY) = -1 ENOENT (No such file or directory) This problem noticed on Linux mainline kernel version 4.20.0-rc3. Best regards Naresh Kamboju