Hi, I found that the commit 4378a7d4be30 ("arm64: implement syscall wrappers") changed the syscall wrapper function names by adding __arm64_ prefix. So arm64 kernel should have its own arch_syscall_match_sym_name().
Thank you, 2018年11月28日(水) 0:22 Naresh Kamboju <naresh.kamb...@linaro.org>: > > 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 -- Masami Hiramatsu