--- zzzz-none-000/linux-2.6.39.4/arch/arm/include/asm/system.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/arm/include/asm/system.h	2021-11-10 13:38:14.000000000 +0000
@@ -184,6 +184,18 @@
 #define set_mb(var, value)	do { var = value; smp_mb(); } while (0)
 #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
 
+#define smp_store_release(p, v)						\
+do {									\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 extern unsigned long cr_no_alignment;	/* defined in entry-armv.S */
 extern unsigned long cr_alignment;	/* defined in entry-armv.S */