return ((counters >> 16) ^ counters) & 0xffff;
}
+static inline int arch_spin_value_unlocked(arch_spinlock_t lock)
+{
+ return lock.h.serving_now == lock.h.ticket;
+}
+
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_spin_unlock_wait(x) \
while (arch_spin_is_locked(x)) { cpu_relax(); }