waitid           1549 kernel/exit.c  SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
waitid           1667 kernel/exit.c  COMPAT_SYSCALL_DEFINE5(waitid,
waitid             45 tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c 	if (waitid(P_PID, chld, &si, WEXITED|WSTOPPED) != 0)
waitid             87 tools/testing/selftests/x86/ptrace_syscall.c 	if (waitid(P_PID, chld, &si, WEXITED|WSTOPPED) != 0)