Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _LIVEPATCH_PATCH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _LIVEPATCH_PATCH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/livepatch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/ftrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * struct klp_ops - structure for tracking registered ftrace ops structs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * A single ftrace_ops is shared between all enabled replacement functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * (klp_func structs) which have the same old_func.  This allows the switch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * between function versions to happen instantaneously by updating the klp_ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * struct's func_stack list.  The winner is the klp_func at the top of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * func_stack (front of the list).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * @node:	node for the global klp_ops list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * @func_stack:	list head for the stack of klp_func's (active func is on top)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * @fops:	registered ftrace ops struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct klp_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	struct list_head node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	struct list_head func_stack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	struct ftrace_ops fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct klp_ops *klp_find_ops(void *old_func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int klp_patch_object(struct klp_object *obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void klp_unpatch_object(struct klp_object *obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void klp_unpatch_objects(struct klp_patch *patch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) void klp_unpatch_objects_dynamic(struct klp_patch *patch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #endif /* _LIVEPATCH_PATCH_H */