FUTEX_CMD_MASK   1994 kernel/futex.c 	int cmd = op & FUTEX_CMD_MASK;
FUTEX_CMD_MASK   2046 kernel/futex.c 	int cmd = op & FUTEX_CMD_MASK;
FUTEX_CMD_MASK    177 kernel/futex_compat.c 	int cmd = op & FUTEX_CMD_MASK;