16 extern void save_stack_trace(struct stack_trace *trace);
18 				  struct stack_trace *trace);
20 				struct stack_trace *trace);
22 extern void print_stack_trace(struct stack_trace *trace, int spaces);
24 			struct stack_trace *trace, int spaces);
27 extern void save_stack_trace_user(struct stack_trace *trace);
29 # define save_stack_trace_user(trace)              do { } while (0)  argument
33 # define save_stack_trace(trace)			do { } while (0)  argument
34 # define save_stack_trace_tsk(tsk, trace)		do { } while (0)  argument
35 # define save_stack_trace_user(trace)			do { } while (0)  argument
36 # define print_stack_trace(trace, spaces)		do { } while (0)  argument
37 # define snprint_stack_trace(buf, size, trace, spaces)	do { } while (0)  argument