| /* SPDX-License-Identifier: GPL-2.0 */ | 
 | #ifndef _LINUX_UNWINDER_H | 
 | #define _LINUX_UNWINDER_H | 
 |  | 
 | #include <asm/stacktrace.h> | 
 |  | 
 | struct unwinder { | 
 | 	const char *name; | 
 | 	struct list_head list; | 
 | 	int rating; | 
 | 	void (*dump)(struct task_struct *, struct pt_regs *, | 
 | 		     unsigned long *, const struct stacktrace_ops *, void *); | 
 | }; | 
 |  | 
 | extern int unwinder_init(void); | 
 | extern int unwinder_register(struct unwinder *); | 
 |  | 
 | extern void unwind_stack(struct task_struct *, struct pt_regs *, | 
 | 			 unsigned long *, const struct stacktrace_ops *, | 
 | 			 void *); | 
 |  | 
 | extern void stack_reader_dump(struct task_struct *, struct pt_regs *, | 
 | 			      unsigned long *, const struct stacktrace_ops *, | 
 | 			      void *); | 
 |  | 
 | /* | 
 |  * Used by fault handling code to signal to the unwinder code that it | 
 |  * should switch to a different unwinder. | 
 |  */ | 
 | extern int unwinder_faulted; | 
 |  | 
 | #endif /* _LINUX_UNWINDER_H */ |