1#ifndef __LINUX_STACKTRACE_H
2#define __LINUX_STACKTRACE_H
3
4#include <linux/types.h>
5
6struct task_struct;
7struct pt_regs;
8
9#ifdef CONFIG_STACKTRACE
10struct stack_trace {
11	unsigned int nr_entries, max_entries;
12	unsigned long *entries;
13	int skip;	/* input argument: How many entries to skip */
14};
15
16extern void save_stack_trace(struct stack_trace *trace);
17extern void save_stack_trace_regs(struct pt_regs *regs,
18				  struct stack_trace *trace);
19extern void save_stack_trace_tsk(struct task_struct *tsk,
20				struct stack_trace *trace);
21
22extern void print_stack_trace(struct stack_trace *trace, int spaces);
23extern int snprint_stack_trace(char *buf, size_t size,
24			struct stack_trace *trace, int spaces);
25
26#ifdef CONFIG_USER_STACKTRACE_SUPPORT
27extern void save_stack_trace_user(struct stack_trace *trace);
28#else
29# define save_stack_trace_user(trace)              do { } while (0)
30#endif
31
32#else
33# define save_stack_trace(trace)			do { } while (0)
34# define save_stack_trace_tsk(tsk, trace)		do { } while (0)
35# define save_stack_trace_user(trace)			do { } while (0)
36# define print_stack_trace(trace, spaces)		do { } while (0)
37# define snprint_stack_trace(buf, size, trace, spaces)	do { } while (0)
38#endif
39
40#endif
41