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-rw-r--r--include/asm-generic/sections.h15
-rw-r--r--include/linux/kallsyms.h2
2 files changed, 15 insertions, 2 deletions
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index 690f741764e1..d0f7bdd2fdf2 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -59,11 +59,24 @@ extern char __noinstr_text_start[], __noinstr_text_end[];
extern __visible const void __nosave_begin, __nosave_end;
/* Function descriptor handling (if any). Override in asm/sections.h */
-#ifndef dereference_function_descriptor
+#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
+void *dereference_function_descriptor(void *ptr);
+void *dereference_kernel_function_descriptor(void *ptr);
+#else
#define dereference_function_descriptor(p) ((void *)(p))
#define dereference_kernel_function_descriptor(p) ((void *)(p))
+
+/* An address is simply the address of the function. */
+typedef struct {
+ unsigned long addr;
+} func_desc_t;
#endif
+static inline bool have_function_descriptors(void)
+{
+ return IS_ENABLED(CONFIG_HAVE_FUNCTION_DESCRIPTORS);
+}
+
/**
* memory_contains - checks if an object is contained within a memory region
* @begin: virtual address of the beginning of the memory region
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 4176c7eca7b5..ce1bd2fbf23e 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -48,7 +48,7 @@ static inline int is_ksym_addr(unsigned long addr)
static inline void *dereference_symbol_descriptor(void *ptr)
{
-#ifdef HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR
+#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
struct module *mod;
ptr = dereference_kernel_function_descriptor(ptr);