syscall_enter 3 tools/perf/examples/bpf/hello.c int syscall_enter(openat)(void *args) syscall_enter 28 tools/perf/examples/bpf/sys_enter_openat.c int syscall_enter(openat)(struct syscall_enter_openat_args *args) syscall_enter 55 tools/perf/include/bpf/bpf.h #define syscall_enter(name) \