41 int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)  in unwind_frame()  argument
44 	unsigned long fp = frame->fp;  in unwind_frame()
59 	low  = frame->sp;  in unwind_frame()
61 	if (on_irq_stack(frame->sp, raw_smp_processor_id()))  in unwind_frame()
69 	frame->sp = fp + 0x10;  in unwind_frame()
70 	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp));  in unwind_frame()
71 	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp + 8));  in unwind_frame()
75 			(frame->pc == (unsigned long)return_to_handler)) {  in unwind_frame()
82 		frame->pc = tsk->ret_stack[frame->graph--].ret;  in unwind_frame()
95 	if (frame->sp == irq_stack_ptr) {  in unwind_frame()
100 		   object_is_on_stack((void *)frame->fp)) {  in unwind_frame()
101 			frame->sp = orig_sp;  in unwind_frame()
105 			frame->pc = irq_args->pc;  in unwind_frame()
119 void notrace walk_stackframe(struct task_struct *tsk, struct stackframe *frame,  in walk_stackframe()  argument
125 		if (fn(frame, data))  in walk_stackframe()
127 		ret = unwind_frame(tsk, frame);  in walk_stackframe()
140 static int save_trace(struct stackframe *frame, void *d)  in save_trace()  argument
144 	unsigned long addr = frame->pc;  in save_trace()
161 	struct stackframe frame;  in save_stack_trace_regs()  local
167 	frame.fp = regs->regs[29];  in save_stack_trace_regs()
168 	frame.sp = regs->sp;  in save_stack_trace_regs()
169 	frame.pc = regs->pc;  in save_stack_trace_regs()
171 	frame.graph = current->curr_ret_stack;  in save_stack_trace_regs()
174 	walk_stackframe(current, &frame, save_trace, &data);  in save_stack_trace_regs()
182 	struct stackframe frame;  in save_stack_trace_tsk()  local
192 		frame.fp = thread_saved_fp(tsk);  in save_stack_trace_tsk()
193 		frame.sp = thread_saved_sp(tsk);  in save_stack_trace_tsk()
194 		frame.pc = thread_saved_pc(tsk);  in save_stack_trace_tsk()
197 		frame.fp = (unsigned long)__builtin_frame_address(0);  in save_stack_trace_tsk()
198 		frame.sp = current_stack_pointer;  in save_stack_trace_tsk()
199 		frame.pc = (unsigned long)save_stack_trace_tsk;  in save_stack_trace_tsk()
202 	frame.graph = tsk->curr_ret_stack;  in save_stack_trace_tsk()
205 	walk_stackframe(tsk, &frame, save_trace, &data);  in save_stack_trace_tsk()