These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / asm-generic / mutex-xchg.h

diff --git a/kernel/include/asm-generic/mutex-xchg.h b/kernel/include/asm-generic/mutex-xchg.h
index f169ec0..a6b4a7b 100644 (file)
--- a/kernel/include/asm-generic/mutex-xchg.h
+++ b/kernel/include/asm-generic/mutex-xchg.h
@@ -31,7 +31,7 @@ __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
                 * to ensure that any waiting tasks are woken up by the
                 * unlock slow path.
                 */
-               if (likely(atomic_xchg(count, -1) != 1))
+               if (likely(atomic_xchg_acquire(count, -1) != 1))
                        fail_fn(count);
 }
 
@@ -46,7 +46,7 @@ __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
 static inline int
 __mutex_fastpath_lock_retval(atomic_t *count)
 {
-       if (unlikely(atomic_xchg(count, 0) != 1))
+       if (unlikely(atomic_xchg_acquire(count, 0) != 1))
                if (likely(atomic_xchg(count, -1) != 1))
                        return -1;
        return 0;
@@ -67,7 +67,7 @@ __mutex_fastpath_lock_retval(atomic_t *count)
 static inline void
 __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 {
-       if (unlikely(atomic_xchg(count, 1) != 0))
+       if (unlikely(atomic_xchg_release(count, 1) != 0))
                fail_fn(count);
 }
 
@@ -91,7 +91,7 @@ __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 static inline int
 __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
 {
-       int prev = atomic_xchg(count, 0);
+       int prev = atomic_xchg_acquire(count, 0);
 
        if (unlikely(prev < 0)) {
                /*
@@ -105,7 +105,7 @@ __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
                 *   owner's unlock path needlessly, but that's not a problem
                 *   in practice. ]
                 */
-               prev = atomic_xchg(count, prev);
+               prev = atomic_xchg_acquire(count, prev);
                if (prev < 0)
                        prev = 0;
        }