Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[pandora-kernel.git] / arch / s390 / include / asm / spinlock.h

diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index f3861b0..c9af0d1 100644 (file)
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -122,8 +122,10 @@ static inline void __raw_spin_unlock(raw_spinlock_t *lp)
 #define __raw_write_can_lock(x) ((x)->lock == 0)
 
 extern void _raw_read_lock_wait(raw_rwlock_t *lp);
+extern void _raw_read_lock_wait_flags(raw_rwlock_t *lp, unsigned long flags);
 extern int _raw_read_trylock_retry(raw_rwlock_t *lp);
 extern void _raw_write_lock_wait(raw_rwlock_t *lp);
+extern void _raw_write_lock_wait_flags(raw_rwlock_t *lp, unsigned long flags);
 extern int _raw_write_trylock_retry(raw_rwlock_t *lp);
 
 static inline void __raw_read_lock(raw_rwlock_t *rw)
@@ -134,6 +136,14 @@ static inline void __raw_read_lock(raw_rwlock_t *rw)
                _raw_read_lock_wait(rw);
 }
 
+static inline void __raw_read_lock_flags(raw_rwlock_t *rw, unsigned long flags)
+{
+       unsigned int old;
+       old = rw->lock & 0x7fffffffU;
+       if (_raw_compare_and_swap(&rw->lock, old, old + 1) != old)
+               _raw_read_lock_wait_flags(rw, flags);
+}
+
 static inline void __raw_read_unlock(raw_rwlock_t *rw)
 {
        unsigned int old, cmp;
@@ -151,6 +161,12 @@ static inline void __raw_write_lock(raw_rwlock_t *rw)
                _raw_write_lock_wait(rw);
 }
 
+static inline void __raw_write_lock_flags(raw_rwlock_t *rw, unsigned long flags)
+{
+       if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0))
+               _raw_write_lock_wait_flags(rw, flags);
+}
+
 static inline void __raw_write_unlock(raw_rwlock_t *rw)
 {
        _raw_compare_and_swap(&rw->lock, 0x80000000, 0);
@@ -172,9 +188,6 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw)
        return _raw_write_trylock_retry(rw);
 }
 
-#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock)
-#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock)
-
 #define _raw_read_relax(lock)  cpu_relax()
 #define _raw_write_relax(lock) cpu_relax()