[PATCH v7 for-next 1/8] livepatch: Make klp_find_func() non static

[Yafang Shao <laoar.shao@gmail.com>]

Make klp_find_func() non static to allow its use in other source files
by an upcoming patch.

While at it, rename the parameter @old_func to @func to better reflect
its generic purpose.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Song Liu <song@kernel.org>
---
 kernel/livepatch/core.c | 18 +++++++++---------
 kernel/livepatch/core.h |  1 +
 2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index a240d1144e89..c34306ecfb0b 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -82,21 +82,21 @@ static bool klp_initialized(void)
 	return !!klp_root_kobj;
 }
 
-static struct klp_func *klp_find_func(struct klp_object *obj,
-				      struct klp_func *old_func)
+/* Check if @func is present in @obj. */
+struct klp_func *klp_find_func(struct klp_object *obj, struct klp_func *func)
 {
-	struct klp_func *func;
+	struct klp_func *obj_func;
 
-	klp_for_each_func(obj, func) {
+	klp_for_each_func(obj, obj_func) {
 		/*
 		 * Besides identical old_sympos, also consider old_sympos
 		 * of 0 and 1 are identical.
 		 */
-		if ((strcmp(old_func->old_name, func->old_name) == 0) &&
-		    ((old_func->old_sympos == func->old_sympos) ||
-		     (old_func->old_sympos == 0 && func->old_sympos == 1) ||
-		     (old_func->old_sympos == 1 && func->old_sympos == 0))) {
-			return func;
+		if ((strcmp(obj_func->old_name, func->old_name) == 0) &&
+		    ((obj_func->old_sympos == func->old_sympos) ||
+		     (obj_func->old_sympos == 0 && func->old_sympos == 1) ||
+		     (obj_func->old_sympos == 1 && func->old_sympos == 0))) {
+			return obj_func;
 		}
 	}
 
diff --git a/kernel/livepatch/core.h b/kernel/livepatch/core.h
index 38209c7361b6..361a0917a03f 100644
--- a/kernel/livepatch/core.h
+++ b/kernel/livepatch/core.h
@@ -17,6 +17,7 @@ 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);
+struct klp_func *klp_find_func(struct klp_object *obj, struct klp_func *func);
 
 static inline bool klp_is_object_loaded(struct klp_object *obj)
 {
-- 
2.52.0