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Ingo Molnar8637c092006-07-03 00:24:38 -07001#ifndef __LINUX_STACKTRACE_H
2#define __LINUX_STACKTRACE_H
3
Joonsoo Kim9a92a6c2014-12-12 16:55:58 -08004#include <linux/types.h>
5
Andrew Morton897312b2008-10-03 15:23:41 -07006struct task_struct;
Soeren Sandmann Pedersen9c0729d2010-11-05 05:59:39 -04007struct pt_regs;
Andrew Morton897312b2008-10-03 15:23:41 -07008
Ingo Molnar8637c092006-07-03 00:24:38 -07009#ifdef CONFIG_STACKTRACE
Vegard Nossumb618ad32008-06-13 15:31:11 +020010struct task_struct;
11
Ingo Molnar8637c092006-07-03 00:24:38 -070012struct stack_trace {
13 unsigned int nr_entries, max_entries;
14 unsigned long *entries;
Andi Kleen5a1b3992006-09-26 10:52:34 +020015 int skip; /* input argument: How many entries to skip */
Ingo Molnar8637c092006-07-03 00:24:38 -070016};
17
Christoph Hellwigab1b6f02007-05-08 00:23:29 -070018extern void save_stack_trace(struct stack_trace *trace);
Masami Hiramatsu39581062011-06-08 16:09:21 +090019extern void save_stack_trace_regs(struct pt_regs *regs,
20 struct stack_trace *trace);
Arjan van de Ven97455122008-01-25 21:08:34 +010021extern void save_stack_trace_tsk(struct task_struct *tsk,
22 struct stack_trace *trace);
Ingo Molnar8637c092006-07-03 00:24:38 -070023
24extern void print_stack_trace(struct stack_trace *trace, int spaces);
Joonsoo Kim9a92a6c2014-12-12 16:55:58 -080025extern int snprint_stack_trace(char *buf, size_t size,
26 struct stack_trace *trace, int spaces);
Török Edwin02b67512008-11-22 13:28:47 +020027
Török Edwin8d264872008-11-23 12:39:08 +020028#ifdef CONFIG_USER_STACKTRACE_SUPPORT
Török Edwin02b67512008-11-22 13:28:47 +020029extern void save_stack_trace_user(struct stack_trace *trace);
30#else
31# define save_stack_trace_user(trace) do { } while (0)
32#endif
33
Ingo Molnar8637c092006-07-03 00:24:38 -070034#else
Christoph Hellwigab1b6f02007-05-08 00:23:29 -070035# define save_stack_trace(trace) do { } while (0)
Arjan van de Ven97455122008-01-25 21:08:34 +010036# define save_stack_trace_tsk(tsk, trace) do { } while (0)
Török Edwin8d7c6a92008-11-23 12:39:06 +020037# define save_stack_trace_user(trace) do { } while (0)
Johannes Berg3b5ad072007-07-19 01:49:02 -070038# define print_stack_trace(trace, spaces) do { } while (0)
Joonsoo Kim9a92a6c2014-12-12 16:55:58 -080039# define snprint_stack_trace(buf, size, trace, spaces) do { } while (0)
Ingo Molnar8637c092006-07-03 00:24:38 -070040#endif
41
42#endif