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-rw-r--r--kernel/livepatch/core.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/livepatch/core.h b/kernel/livepatch/core.h
index c74f24c47837..6fc907b54e71 100644
--- a/kernel/livepatch/core.h
+++ b/kernel/livepatch/core.h
@@ -1,6 +1,44 @@
#ifndef _LIVEPATCH_CORE_H
#define _LIVEPATCH_CORE_H
+#include <linux/livepatch.h>
+
extern struct mutex klp_mutex;
+static inline bool klp_is_object_loaded(struct klp_object *obj)
+{
+ return !obj->name || obj->mod;
+}
+
+static inline int klp_pre_patch_callback(struct klp_object *obj)
+{
+ int ret;
+
+ ret = (obj->callbacks.pre_patch) ?
+ (*obj->callbacks.pre_patch)(obj) : 0;
+
+ obj->callbacks.post_unpatch_enabled = !ret;
+
+ return ret;
+}
+
+static inline void klp_post_patch_callback(struct klp_object *obj)
+{
+ if (obj->callbacks.post_patch)
+ (*obj->callbacks.post_patch)(obj);
+}
+
+static inline void klp_pre_unpatch_callback(struct klp_object *obj)
+{
+ if (obj->callbacks.pre_unpatch)
+ (*obj->callbacks.pre_unpatch)(obj);
+}
+
+static inline void klp_post_unpatch_callback(struct klp_object *obj)
+{
+ if (obj->callbacks.post_unpatch_enabled &&
+ obj->callbacks.post_unpatch)
+ (*obj->callbacks.post_unpatch)(obj);
+}
+
#endif /* _LIVEPATCH_CORE_H */