--- zzzz-none-000/linux-2.6.39.4/arch/x86/include/asm/system.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/x86/include/asm/system.h	2021-11-10 13:38:14.000000000 +0000
@@ -442,6 +442,18 @@
 #define set_mb(var, value) do { var = value; barrier(); } while (0)
 #endif
 
+#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;								\
+})
+
 /*
  * Stop RDTSC speculation. This is needed when you need to use RDTSC
  * (or get_cycles or vread that possibly accesses the TSC) in a defined