From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- kernel/livepatch/core.h | 59 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 kernel/livepatch/core.h (limited to 'kernel/livepatch/core.h') diff --git a/kernel/livepatch/core.h b/kernel/livepatch/core.h new file mode 100644 index 000000000..38209c736 --- /dev/null +++ b/kernel/livepatch/core.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LIVEPATCH_CORE_H +#define _LIVEPATCH_CORE_H + +#include + +extern struct mutex klp_mutex; +extern struct list_head klp_patches; + +#define klp_for_each_patch_safe(patch, tmp_patch) \ + list_for_each_entry_safe(patch, tmp_patch, &klp_patches, list) + +#define klp_for_each_patch(patch) \ + list_for_each_entry(patch, &klp_patches, list) + +void klp_free_patch_async(struct klp_patch *patch); +void klp_free_replaced_patches_async(struct klp_patch *new_patch); +void klp_unpatch_replaced_patches(struct klp_patch *new_patch); +void klp_discard_nops(struct klp_patch *new_patch); + +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 */ -- cgit v1.2.3