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