David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LIVEPATCH_PATCH_H
|
|
#define _LIVEPATCH_PATCH_H
|
|
|
|
#include <linux/livepatch.h>
|
|
#include <linux/list.h>
|
|
#include <linux/ftrace.h>
|
|
|
|
/**
|
|
* struct klp_ops - structure for tracking registered ftrace ops structs
|
|
*
|
|
* A single ftrace_ops is shared between all enabled replacement functions
|
|
* (klp_func structs) which have the same old_func. This allows the switch
|
|
* between function versions to happen instantaneously by updating the klp_ops
|
|
* struct's func_stack list. The winner is the klp_func at the top of the
|
|
* func_stack (front of the list).
|
|
*
|
|
* @node: node for the global klp_ops list
|
|
* @func_stack: list head for the stack of klp_func's (active func is on top)
|
|
* @fops: registered ftrace ops struct
|
|
*/
|
|
struct klp_ops {
|
|
struct list_head node;
|
|
struct list_head func_stack;
|
|
struct ftrace_ops fops;
|
|
};
|
|
|
|
struct klp_ops *klp_find_ops(void *old_func);
|
|
|
|
int klp_patch_object(struct klp_object *obj);
|
|
void klp_unpatch_object(struct klp_object *obj);
|
|
void klp_unpatch_objects(struct klp_patch *patch);
|
|
void klp_unpatch_objects_dynamic(struct klp_patch *patch);
|
|
|
|
#endif /* _LIVEPATCH_PATCH_H */
|