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Commit 83f4fcce authored by Jan Beulich's avatar Jan Beulich Committed by Linus Torvalds
Browse files

[PATCH] x86_64: allow unwinder to build without module support 



Add proper conditionals to be able to build with CONFIG_MODULES=n.

Signed-off-by: default avatarJan Beulich <jbeulich@novell.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent c33bd9aa

include/linux/unwind.h

+8 −0
Original line number Diff line number Diff line
@@ -29,12 +29,16 @@ struct module; 
 */

extern void unwind_init(void);



#ifdef CONFIG_MODULES



extern void *unwind_add_table(struct module *,

                              const void *table_start,

                              unsigned long table_size);



extern void unwind_remove_table(void *handle, int init_only);



#endif



extern int unwind_init_frame_info(struct unwind_frame_info *,

                                  struct task_struct *,

                                  /*const*/ struct pt_regs *);
@@ -72,6 +76,8 @@ struct unwind_frame_info {}; 


static inline void unwind_init(void) {}



#ifdef CONFIG_MODULES



static inline void *unwind_add_table(struct module *mod,

                                     const void *table_start,

                                     unsigned long table_size)
@@ -79,6 +85,8 @@ static inline void *unwind_add_table(struct module *mod, 
	return NULL;

}



#endif



static inline void unwind_remove_table(void *handle, int init_only)

{

}

kernel/unwind.c

+4 −0
Original line number Diff line number Diff line
@@ -172,6 +172,8 @@ void __init unwind_init(void) 
	                  __start_unwind, __end_unwind - __start_unwind);

}



#ifdef CONFIG_MODULES



/* Must be called with module_mutex held. */

void *unwind_add_table(struct module *module,

                       const void *table_start,
@@ -253,6 +255,8 @@ void unwind_remove_table(void *handle, int init_only) 
		kfree(table);

}



#endif /* CONFIG_MODULES */



static uleb128_t get_uleb128(const u8 **pcur, const u8 *end)

{

	const u8 *cur = *pcur;