19 	unsigned long fp, sp, pc;  in walk_stackframe()  local
24 		pc = instruction_pointer(regs);  in walk_stackframe()
29 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
34 		pc = thread_saved_lr(task);  in walk_stackframe()
41 		if (unlikely(!__kernel_text_address(pc) || fn(pc, arg)))  in walk_stackframe()
53 		pc = ftrace_graph_ret_addr(current, NULL, frame->ra,  in walk_stackframe()
63 	unsigned long sp, pc;  in walk_stackframe()  local
68 		pc = instruction_pointer(regs);  in walk_stackframe()
71 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
75 		pc = thread_saved_lr(task);  in walk_stackframe()
83 		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))  in walk_stackframe()
85 		pc = (*ksp++) - 0x4;  in walk_stackframe()
90 static bool print_trace_address(unsigned long pc, void *arg)  in print_trace_address()  argument
92 	print_ip_sym((const char *)arg, pc);  in print_trace_address()
102 static bool save_wchan(unsigned long pc, void *arg)  in save_wchan()  argument
104 	if (!in_sched_functions(pc)) {  in save_wchan()
106 		*p = pc;  in save_wchan()
114 	unsigned long pc = 0;  in __get_wchan()  local
116 	walk_stackframe(task, NULL, save_wchan, &pc);  in __get_wchan()
117 	return pc;  in __get_wchan()
121 static bool __save_trace(unsigned long pc, void *arg, bool nosched)  in __save_trace()  argument
125 	if (unlikely(nosched && in_sched_functions(pc)))  in __save_trace()
132 	trace->entries[trace->nr_entries++] = pc;  in __save_trace()
136 static bool save_trace(unsigned long pc, void *arg)  in save_trace()  argument
138 	return __save_trace(pc, arg, false);  in save_trace()