--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -3070,5 +3070,47 @@ static inline void free_secdata(void *secdata)
 { }
 #endif /* CONFIG_SECURITY */
 
+#if CONFIG_SECURITY_YAMA
+extern int yama_ptrace_access_check(struct task_struct *child,
+                                   unsigned int mode);
+extern int yama_path_link(struct dentry *old_dentry, struct path *new_dir,

Please use "#ifdef CONFIG_SECURITY_YAMA".

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