asm-generic: guard smp_store_release/load_acquire

[cascardo/linux.git] / include / asm-generic / barrier.h

diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h
index b42afad..987b2e0 100644 (file)
--- a/include/asm-generic/barrier.h
+++ b/include/asm-generic/barrier.h
@@ -93,7 +93,7 @@
 #endif /* CONFIG_SMP */
 
 #ifndef smp_store_mb
-#define smp_store_mb(var, value)  do { WRITE_ONCE(var, value); mb(); } while (0)
+#define smp_store_mb(var, value)  do { WRITE_ONCE(var, value); smp_mb(); } while (0)
 #endif
 
 #ifndef smp_mb__before_atomic
@@ -104,13 +104,16 @@
 #define smp_mb__after_atomic() smp_mb()
 #endif
 
+#ifndef smp_store_release
 #define smp_store_release(p, v)                                                \
 do {                                                                   \
        compiletime_assert_atomic_type(*p);                             \
        smp_mb();                                                       \
        WRITE_ONCE(*p, v);                                              \
 } while (0)
+#endif
 
+#ifndef smp_load_acquire
 #define smp_load_acquire(p)                                            \
 ({                                                                     \
        typeof(*p) ___p1 = READ_ONCE(*p);                               \
@@ -118,6 +121,7 @@ do {                                                                        \
        smp_mb();                                                       \
        ___p1;                                                          \
 })
+#endif
 
 #endif /* !__ASSEMBLY__ */
 #endif /* __ASM_GENERIC_BARRIER_H */