44 int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)  in unwind_frame()  argument
51 	if (!tsk)  in unwind_frame()
52 		tsk = current;  in unwind_frame()
54 	if (!on_accessible_stack(tsk, fp))  in unwind_frame()
61 	if (tsk->ret_stack &&  in unwind_frame()
74 		frame->pc = tsk->ret_stack[frame->graph--].ret;  in unwind_frame()
91 void notrace walk_stackframe(struct task_struct *tsk, struct stackframe *frame,  in walk_stackframe()  argument
99 		ret = unwind_frame(tsk, frame);  in walk_stackframe()
151 static noinline void __save_stack_trace(struct task_struct *tsk,  in __save_stack_trace()  argument
157 	if (!try_get_task_stack(tsk))  in __save_stack_trace()
164 	if (tsk != current) {  in __save_stack_trace()
165 		frame.fp = thread_saved_fp(tsk);  in __save_stack_trace()
166 		frame.pc = thread_saved_pc(tsk);  in __save_stack_trace()
174 	frame.graph = tsk->curr_ret_stack;  in __save_stack_trace()
177 	walk_stackframe(tsk, &frame, save_trace, &data);  in __save_stack_trace()
181 	put_task_stack(tsk);  in __save_stack_trace()
185 void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)  in save_stack_trace_tsk()  argument
187 	__save_stack_trace(tsk, trace, 1);  in save_stack_trace_tsk()