---

yaml
---
r: 77223
b: refs/heads/master
c: 894cdde
h: refs/heads/master
i:
  77221: aa4a181
  77219: 22f3db2
  77215: cb38b2a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dab5209cd878c146d9f6923f061d1c2725ff210f
+refs/heads/master: 894cdde26b538c77b9943bc72f0570abf6e58e37

trunk/arch/s390/lib/spinlock.c

@@ -59,6 +59,29 @@ void _raw_spin_lock_wait(raw_spinlock_t *lp)
 }
 EXPORT_SYMBOL(_raw_spin_lock_wait);
 
+void _raw_spin_lock_wait_flags(raw_spinlock_t *lp, unsigned long flags)
+{
+	int count = spin_retry;
+	unsigned int cpu = ~smp_processor_id();
+
+	local_irq_restore(flags);
+	while (1) {
+		if (count-- <= 0) {
+			unsigned int owner = lp->owner_cpu;
+			if (owner != 0)
+				_raw_yield_cpu(~owner);
+			count = spin_retry;
+		}
+		if (__raw_spin_is_locked(lp))
+			continue;
+		local_irq_disable();
+		if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
+			return;
+		local_irq_restore(flags);
+	}
+}
+EXPORT_SYMBOL(_raw_spin_lock_wait_flags);
+
 int _raw_spin_trylock_retry(raw_spinlock_t *lp)
 {
 	unsigned int cpu = ~smp_processor_id();

trunk/include/asm-s390/spinlock.h

@@ -53,12 +53,12 @@ _raw_compare_and_swap(volatile unsigned int *lock,
  */
 
 #define __raw_spin_is_locked(x) ((x)->owner_cpu != 0)
-#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
 #define __raw_spin_unlock_wait(lock) \
 	do { while (__raw_spin_is_locked(lock)) \
 		 _raw_spin_relax(lock); } while (0)
 
 extern void _raw_spin_lock_wait(raw_spinlock_t *);
+extern void _raw_spin_lock_wait_flags(raw_spinlock_t *, unsigned long flags);
 extern int _raw_spin_trylock_retry(raw_spinlock_t *);
 extern void _raw_spin_relax(raw_spinlock_t *lock);
 
@@ -72,6 +72,17 @@ static inline void __raw_spin_lock(raw_spinlock_t *lp)
 	_raw_spin_lock_wait(lp);
 }
 
+static inline void __raw_spin_lock_flags(raw_spinlock_t *lp,
+					 unsigned long flags)
+{
+	int old;
+
+	old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id());
+	if (likely(old == 0))
+		return;
+	_raw_spin_lock_wait_flags(lp, flags);
+}
+
 static inline int __raw_spin_trylock(raw_spinlock_t *lp)
 {
 	int old;