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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 task_struct; 11 12struct stack_trace { 13 unsigned int nr_entries, max_entries; 14 unsigned long *entries; 15 int skip; /* input argument: How many entries to skip */ 16}; 17 18extern void save_stack_trace(struct stack_trace *trace); 19extern void save_stack_trace_regs(struct pt_regs *regs, 20 struct stack_trace *trace); 21extern void save_stack_trace_tsk(struct task_struct *tsk, 22 struct stack_trace *trace); 23 24extern void print_stack_trace(struct stack_trace *trace, int spaces); 25extern int snprint_stack_trace(char *buf, size_t size, 26 struct stack_trace *trace, int spaces); 27 28#ifdef CONFIG_USER_STACKTRACE_SUPPORT 29extern void save_stack_trace_user(struct stack_trace *trace); 30#else 31# define save_stack_trace_user(trace) do { } while (0) 32#endif 33 34#else 35# define save_stack_trace(trace) do { } while (0) 36# define save_stack_trace_tsk(tsk, trace) do { } while (0) 37# define save_stack_trace_user(trace) do { } while (0) 38# define print_stack_trace(trace, spaces) do { } while (0) 39# define snprint_stack_trace(buf, size, trace, spaces) do { } while (0) 40#endif 41 42#endif