livepatch: Delete the duplicate code of klp_compare_address()

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5CJ7X

--------------------------------

Delete the duplicate code of klp_compare_address() in each arch.
Signed-off-by: NLi Huafei <lihuafei1@huawei.com>
Reviewed-by: NXu Kuohai <xukuohai@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm/kernel/livepatch.c

@@ -86,16 +86,6 @@ static inline unsigned long klp_size_to_check(unsigned long func_size,
 	return size;
 }
 
-static inline int klp_compare_address(unsigned long pc, unsigned long func_addr,
-		const char *func_name, unsigned long check_size)
-{
-	if (pc >= func_addr && pc < func_addr + check_size) {
-		pr_err("func %s is in use!\n", func_name);
-		return -EBUSY;
-	}
-	return 0;
-}
-
 static bool check_jump_insn(unsigned long func_addr)
 {
 	unsigned long i;

arch/arm64/kernel/livepatch.c

@@ -80,16 +80,6 @@ static inline unsigned long klp_size_to_check(unsigned long func_size,
 	return size;
 }
 
-static inline int klp_compare_address(unsigned long pc, unsigned long func_addr,
-		const char *func_name, unsigned long check_size)
-{
-	if (pc >= func_addr && pc < func_addr + check_size) {
-		pr_err("func %s is in use!\n", func_name);
-		return -EBUSY;
-	}
-	return 0;
-}
-
 static bool check_jump_insn(unsigned long func_addr)
 {
 	unsigned long i;

arch/powerpc/kernel/livepatch_32.c

@@ -83,16 +83,6 @@ static inline unsigned long klp_size_to_check(unsigned long func_size,
 	return size;
 }
 
-static inline int klp_compare_address(unsigned long pc, unsigned long func_addr,
-		const char *func_name, unsigned long check_size)
-{
-	if (pc >= func_addr && pc < func_addr + check_size) {
-		pr_err("func %s is in use!\n", func_name);
-		return -EBUSY;
-	}
-	return 0;
-}
-
 static bool check_jump_insn(unsigned long func_addr)
 {
 	unsigned long i;

arch/powerpc/kernel/livepatch_64.c

@@ -89,16 +89,6 @@ static inline unsigned long klp_size_to_check(unsigned long func_size,
 	return size;
 }
 
-static inline int klp_compare_address(unsigned long pc, unsigned long func_addr,
-		const char *func_name, unsigned long check_size)
-{
-	if (pc >= func_addr && pc < func_addr + check_size) {
-		pr_err("func %s is in use!\n", func_name);
-		return -EBUSY;
-	}
-	return 0;
-}
-
 static bool check_jump_insn(unsigned long func_addr)
 {
 	unsigned long i;

arch/x86/kernel/livepatch.c

@@ -66,17 +66,6 @@ static inline unsigned long klp_size_to_check(unsigned long func_size,
 	return size;
 }
 
-static inline int klp_compare_address(unsigned long stack_addr,
-		unsigned long func_addr, const char *func_name,
-		unsigned long check_size)
-{
-	if (stack_addr >= func_addr && stack_addr < func_addr + check_size) {
-		pr_err("func %s is in use!\n", func_name);
-		return -EBUSY;
-	}
-	return 0;
-}
-
 static bool check_jump_insn(unsigned long func_addr)
 {
 	int len = JMP_E9_INSN_SIZE;

include/linux/livepatch.h

@@ -234,6 +234,18 @@ struct klp_func_node {
 struct klp_func_node *klp_find_func_node(const void *old_func);
 void klp_add_func_node(struct klp_func_node *func_node);
 void klp_del_func_node(struct klp_func_node *func_node);
+
+static inline
+int klp_compare_address(unsigned long pc, unsigned long func_addr,
+			const char *func_name, unsigned long check_size)
+{
+	if (pc >= func_addr && pc < func_addr + check_size) {
+		pr_err("func %s is in use!\n", func_name);
+		return -EBUSY;
+	}
+	return 0;
+}
+
 #endif
 
 int klp_apply_section_relocs(struct module *pmod, Elf_Shdr *sechdrs,