54 	u32 tail;  in encode_tail()  local
56 	tail  = (cpu + 1) << _Q_TAIL_CPU_OFFSET;  in encode_tail()
57 	tail |= idx << _Q_TAIL_IDX_OFFSET; /* assume < 4 */  in encode_tail()
59 	return tail;  in encode_tail()
62 static inline __pure struct mcs_spinlock *decode_tail(u32 tail,  in decode_tail()  argument
65 	int cpu = (tail >> _Q_TAIL_CPU_OFFSET) - 1;  in decode_tail()
66 	int idx = (tail &  _Q_TAIL_IDX_MASK) >> _Q_TAIL_IDX_OFFSET;  in decode_tail()
114 static __always_inline u32 xchg_tail(struct qspinlock *lock, u32 tail)  in xchg_tail()  argument
120 	return (u32)xchg_relaxed(&lock->tail,  in xchg_tail()
121 				 tail >> _Q_TAIL_OFFSET) << _Q_TAIL_OFFSET;  in xchg_tail()
158 static __always_inline u32 xchg_tail(struct qspinlock *lock, u32 tail)  in xchg_tail()  argument
164 		new = (old & _Q_LOCKED_PENDING_MASK) | tail;  in xchg_tail()