sys_waitpid      1152 include/linux/syscalls.h asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
sys_waitpid      1762 tools/include/nolibc/nolibc.h 	return sys_waitpid(-1, status, 0);
sys_waitpid      2244 tools/include/nolibc/nolibc.h 	pid_t ret = sys_waitpid(pid, status, options);