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#ifndef _LINUX_UNWIND_H
#define _LINUX_UNWIND_H
 
/*
 * Copyright (C) 2002-2006 Novell, Inc.
 *	Jan Beulich <jbeulich@novell.com>
 * This code is released under version 2 of the GNU GPL.
 *
 * A simple API for unwinding kernel stacks.  This is used for
 * debugging and error reporting purposes.  The kernel doesn't need
 * full-blown stack unwinding with all the bells and whistles, so there
 * is not much point in implementing the full Dwarf2 unwind API.
 */
 
struct module;
 
struct unwind_frame_info {};
 
static inline void unwind_init(void) {}
static inline void unwind_setup(void) {}
 
#ifdef CONFIG_MODULES
 
static inline void *unwind_add_table(struct module *mod,
                                     const void *table_start,
                                     unsigned long table_size)
{
	return NULL;
}
 
static inline void unwind_remove_table(void *handle, int init_only)
{
}
 
#endif
 
static inline int unwind_init_frame_info(struct unwind_frame_info *info,
                                         struct task_struct *tsk,
                                         const struct pt_regs *regs)
{
	return -ENOSYS;
}
 
static inline int unwind_init_blocked(struct unwind_frame_info *info,
                                      struct task_struct *tsk)
{
	return -ENOSYS;
}
 
static inline int unwind_init_running(struct unwind_frame_info *info,
                                      asmlinkage int (*cb)(struct unwind_frame_info *,
                                                           void *arg),
                                      void *arg)
{
	return -ENOSYS;
}
 
static inline int unwind(struct unwind_frame_info *info)
{
	return -ENOSYS;
}
 
static inline int unwind_to_user(struct unwind_frame_info *info)
{
	return -ENOSYS;
}
 
#endif /* _LINUX_UNWIND_H */