mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 13:11:14 +07:00
0ef76878cf
Pull livepatching updates from Jiri Kosina: - shadow variables support, allowing livepatches to associate new "shadow" fields to existing data structures, from Joe Lawrence - pre/post patch callbacks API, allowing livepatch writers to register callbacks to be called before and after patch application, from Joe Lawrence * 'for-linus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching: livepatch: __klp_disable_patch() should never be called for disabled patches livepatch: Correctly call klp_post_unpatch_callback() in error paths livepatch: add transition notices livepatch: move transition "complete" notice into klp_complete_transition() livepatch: add (un)patch callbacks livepatch: Small shadow variable documentation fixes livepatch: __klp_shadow_get_or_alloc() is local to shadow.c livepatch: introduce shadow variable API
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#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 = 0;
|
|
|
|
if (obj->callbacks.pre_patch)
|
|
ret = (*obj->callbacks.pre_patch)(obj);
|
|
|
|
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);
|
|
|
|
obj->callbacks.post_unpatch_enabled = false;
|
|
}
|
|
|
|
#endif /* _LIVEPATCH_CORE_H */
|