root/include/linux/stacktrace.h

INCLUDED FROM

#ifndef __LINUX_STACKTRACE_H
#define __LINUX_STACKTRACE_H

struct task_struct;
struct pt_regs;

#ifdef CONFIG_STACKTRACE
struct task_struct;

struct stack_trace {
        unsigned int nr_entries, max_entries;
        unsigned long *entries;
        int skip;       /* input argument: How many entries to skip */
};

extern void save_stack_trace(struct stack_trace *trace);
extern void save_stack_trace_regs(struct pt_regs *regs,
                                  struct stack_trace *trace);
extern void save_stack_trace_tsk(struct task_struct *tsk,
                                struct stack_trace *trace);

extern void print_stack_trace(struct stack_trace *trace, int spaces);

#ifdef CONFIG_USER_STACKTRACE_SUPPORT
extern void save_stack_trace_user(struct stack_trace *trace);
#else
# define save_stack_trace_user(trace)              do { } while (0)
#endif

#else
# define save_stack_trace(trace)                        do { } while (0)
# define save_stack_trace_tsk(tsk, trace)               do { } while (0)
# define save_stack_trace_user(trace)                   do { } while (0)
# define print_stack_trace(trace, spaces)               do { } while (0)
#endif

#endif