25 	unsigned long fp, sp, pc;  in walk_stackframe()  local
30 		pc = instruction_pointer(regs);  in walk_stackframe()
35 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
40 		pc = task->thread.ra;  in walk_stackframe()
47 		if (unlikely(!__kernel_text_address(pc) || fn(pc, arg)))  in walk_stackframe()
59 		pc = ftrace_graph_ret_addr(current, NULL, frame->ra,  in walk_stackframe()
69 	unsigned long sp, pc;  in walk_stackframe()  local
74 		pc = instruction_pointer(regs);  in walk_stackframe()
78 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
82 		pc = task->thread.ra;  in walk_stackframe()
90 		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))  in walk_stackframe()
92 		pc = (*ksp++) - 0x4;  in walk_stackframe()
99 static bool print_trace_address(unsigned long pc, void *arg)  in print_trace_address()  argument
101 	print_ip_sym(pc);  in print_trace_address()
112 static bool save_wchan(unsigned long pc, void *arg)  in save_wchan()  argument
114 	if (!in_sched_functions(pc)) {  in save_wchan()
116 		*p = pc;  in save_wchan()
124 	unsigned long pc = 0;  in get_wchan()  local
127 		walk_stackframe(task, NULL, save_wchan, &pc);  in get_wchan()
128 	return pc;  in get_wchan()
134 static bool __save_trace(unsigned long pc, void *arg, bool nosched)  in __save_trace()  argument
138 	if (unlikely(nosched && in_sched_functions(pc)))  in __save_trace()
145 	trace->entries[trace->nr_entries++] = pc;  in __save_trace()
149 static bool save_trace(unsigned long pc, void *arg)  in save_trace()  argument
151 	return __save_trace(pc, arg, false);  in save_trace()