19 	unsigned long fp, sp, pc;  in walk_stackframe()  local
24 		pc = instruction_pointer(regs);  in walk_stackframe()
30 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
35 		pc = thread_saved_lr(task);  in walk_stackframe()
42 		if (unlikely(!__kernel_text_address(pc) || fn(pc, arg)))  in walk_stackframe()
54 		pc = ftrace_graph_ret_addr(current, NULL, frame->ra,  in walk_stackframe()
64 	unsigned long sp, pc;  in walk_stackframe()  local
69 		pc = instruction_pointer(regs);  in walk_stackframe()
73 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
77 		pc = thread_saved_lr(task);  in walk_stackframe()
85 		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))  in walk_stackframe()
87 		pc = (*ksp++) - 0x4;  in walk_stackframe()
92 static bool print_trace_address(unsigned long pc, void *arg)  in print_trace_address()  argument
94 	print_ip_sym((const char *)arg, pc);  in print_trace_address()
104 static bool save_wchan(unsigned long pc, void *arg)  in save_wchan()  argument
106 	if (!in_sched_functions(pc)) {  in save_wchan()
108 		*p = pc;  in save_wchan()
116 	unsigned long pc = 0;  in __get_wchan()  local
118 	walk_stackframe(task, NULL, save_wchan, &pc);  in __get_wchan()
119 	return pc;  in __get_wchan()
123 static bool __save_trace(unsigned long pc, void *arg, bool nosched)  in __save_trace()  argument
127 	if (unlikely(nosched && in_sched_functions(pc)))  in __save_trace()
134 	trace->entries[trace->nr_entries++] = pc;  in __save_trace()
138 static bool save_trace(unsigned long pc, void *arg)  in save_trace()  argument
140 	return __save_trace(pc, arg, false);  in save_trace()