UBUNTU: apparmor -- follow change to this_cpu_ptr

Signed-off-by: Andy Whitcroft <apw@canonical.com>
diff --git a/security/apparmor/include/path.h b/security/apparmor/include/path.h
index 09b47b8..79c48d4 100644
--- a/security/apparmor/include/path.h
+++ b/security/apparmor/include/path.h
@@ -64,7 +64,7 @@
 #define __get_buffer(N) ({					\
 	struct aa_buffers *__cpu_var; \
 	AA_BUG_PREEMPT_ENABLED("__get_buffer without preempt disabled");  \
-	__cpu_var = &__get_cpu_var(aa_buffers);			\
+	__cpu_var = this_cpu_ptr(&aa_buffers);			\
         __cpu_var->buf[(N)]; })
 
 #define __get_buffers(X...)		\