19 void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,  in walk_stackframe()  argument
29 	} else if (task == NULL || task == current) {  in walk_stackframe()
35 		fp = task->thread.s[0];  in walk_stackframe()
36 		sp = task->thread.sp;  in walk_stackframe()
37 		pc = task->thread.ra;  in walk_stackframe()
69 void notrace walk_stackframe(struct task_struct *task,  in walk_stackframe()  argument
78 	} else if (task == NULL || task == current) {  in walk_stackframe()
83 		sp = task->thread.sp;  in walk_stackframe()
84 		pc = task->thread.ra;  in walk_stackframe()
108 noinline void dump_backtrace(struct pt_regs *regs, struct task_struct *task,  in dump_backtrace()  argument
111 	walk_stackframe(task, regs, print_trace_address, (void *)loglvl);  in dump_backtrace()
114 void show_stack(struct task_struct *task, unsigned long *sp, const char *loglvl)  in show_stack()  argument
117 	dump_backtrace(NULL, task, loglvl);  in show_stack()
130 unsigned long __get_wchan(struct task_struct *task)  in __get_wchan()  argument
134 	if (!try_get_task_stack(task))  in __get_wchan()
136 	walk_stackframe(task, NULL, save_wchan, &pc);  in __get_wchan()
137 	put_task_stack(task);  in __get_wchan()
142 		     struct task_struct *task, struct pt_regs *regs)  in arch_stack_walk()  argument
144 	walk_stackframe(task, regs, consume_entry, cookie);  in arch_stack_walk()