1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LIVEPATCH_CORE_H
 3#define _LIVEPATCH_CORE_H
 4
 5#include <linux/livepatch.h>
 6
 7extern struct mutex klp_mutex;
 8
 9static inline bool klp_is_object_loaded(struct klp_object *obj)
10{
11	return !obj->name || obj->mod;
12}
13
14static inline int klp_pre_patch_callback(struct klp_object *obj)
15{
16	int ret = 0;
17
18	if (obj->callbacks.pre_patch)
19		ret = (*obj->callbacks.pre_patch)(obj);
20
21	obj->callbacks.post_unpatch_enabled = !ret;
22
23	return ret;
24}
25
26static inline void klp_post_patch_callback(struct klp_object *obj)
27{
28	if (obj->callbacks.post_patch)
29		(*obj->callbacks.post_patch)(obj);
30}
31
32static inline void klp_pre_unpatch_callback(struct klp_object *obj)
33{
34	if (obj->callbacks.pre_unpatch)
35		(*obj->callbacks.pre_unpatch)(obj);
36}
37
38static inline void klp_post_unpatch_callback(struct klp_object *obj)
39{
40	if (obj->callbacks.post_unpatch_enabled &&
41	    obj->callbacks.post_unpatch)
42		(*obj->callbacks.post_unpatch)(obj);
43
44	obj->callbacks.post_unpatch_enabled = false;
45}
46
47#endif /* _LIVEPATCH_CORE_H */