Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

[firefly-linux-kernel-4.4.55.git] / include / asm-generic / barrier.h

diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h
index 639d7a4d033bc2a0dc2413003d9209540504ebe3..01613b382b0e37a14c0339daf32fd574d2fd81a0 100644 (file)
--- a/include/asm-generic/barrier.h
+++ b/include/asm-generic/barrier.h
@@ -46,5 +46,20 @@
 #define read_barrier_depends()         do {} while (0)
 #define smp_read_barrier_depends()     do {} while (0)
 
+#define smp_store_release(p, v)                                                \
+do {                                                                   \
+       compiletime_assert_atomic_type(*p);                             \
+       smp_mb();                                                       \
+       ACCESS_ONCE(*p) = (v);                                          \
+} while (0)
+
+#define smp_load_acquire(p)                                            \
+({                                                                     \
+       typeof(*p) ___p1 = ACCESS_ONCE(*p);                             \
+       compiletime_assert_atomic_type(*p);                             \
+       smp_mb();                                                       \
+       ___p1;                                                          \
+})
+
 #endif /* !__ASSEMBLY__ */
 #endif /* __ASM_GENERIC_BARRIER_H */