---

yaml
---
r: 158731
b: refs/heads/master
c: 4d576b5
h: refs/heads/master
i:
  158729: 7338c73
  158727: 3ba6e55
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 577eebeae34d340685d8985dfdb7dfe337c511e8
+refs/heads/master: 4d576b57b50a92801e6493e76e5243d6cff193d2

trunk/arch/x86/xen/spinlock.c

@@ -187,7 +187,6 @@ static noinline int xen_spin_lock_slow(struct raw_spinlock *lock, bool irq_enabl
 	struct xen_spinlock *prev;
 	int irq = __get_cpu_var(lock_kicker_irq);
 	int ret;
-	unsigned long flags;
 	u64 start;
 
 	/* If kicker interrupts not initialized yet, just spin */
@@ -199,16 +198,12 @@ static noinline int xen_spin_lock_slow(struct raw_spinlock *lock, bool irq_enabl
 	/* announce we're spinning */
 	prev = spinning_lock(xl);
 
-	flags = __raw_local_save_flags();
-	if (irq_enable) {
-		ADD_STATS(taken_slow_irqenable, 1);
-		raw_local_irq_enable();
-	}
-
 	ADD_STATS(taken_slow, 1);
 	ADD_STATS(taken_slow_nested, prev != NULL);
 
 	do {
+		unsigned long flags;
+
 		/* clear pending */
 		xen_clear_irq_pending(irq);
 
@@ -228,6 +223,12 @@ static noinline int xen_spin_lock_slow(struct raw_spinlock *lock, bool irq_enabl
 			goto out;
 		}
 
+		flags = __raw_local_save_flags();
+		if (irq_enable) {
+			ADD_STATS(taken_slow_irqenable, 1);
+			raw_local_irq_enable();
+		}
+
 		/*
 		 * Block until irq becomes pending.  If we're
 		 * interrupted at this point (after the trylock but
@@ -238,13 +239,15 @@ static noinline int xen_spin_lock_slow(struct raw_spinlock *lock, bool irq_enabl
 		 * pending.
 		 */
 		xen_poll_irq(irq);
+
+		raw_local_irq_restore(flags);
+
 		ADD_STATS(taken_slow_spurious, !xen_test_irq_pending(irq));
 	} while (!xen_test_irq_pending(irq)); /* check for spurious wakeups */
 
 	kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
 
 out:
-	raw_local_irq_restore(flags);
 	unspinning_lock(xl, prev);
 	spin_time_accum_blocked(start);