33 	unsigned long fp, sp, pc;  in walk_stackframe()  local
38 		pc = GET_IP(regs);  in walk_stackframe()
43 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
48 		pc = task->thread.ra;  in walk_stackframe()
55 		if (unlikely(!__kernel_text_address(pc) || fn(pc, arg)))  in walk_stackframe()
68 		pc = ftrace_graph_ret_addr(current, NULL, frame->ra,  in walk_stackframe()
71 		pc = frame->ra - 0x4;  in walk_stackframe()
81 	unsigned long sp, pc;  in walk_stackframe()  local
86 		pc = GET_IP(regs);  in walk_stackframe()
90 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
94 		pc = task->thread.ra;  in walk_stackframe()
102 		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))  in walk_stackframe()
104 		pc = (*ksp++) - 0x4;  in walk_stackframe()
111 static bool print_trace_address(unsigned long pc, void *arg)  in print_trace_address()  argument
113 	print_ip_sym(pc);  in print_trace_address()
124 static bool save_wchan(unsigned long pc, void *arg)  in save_wchan()  argument
126 	if (!in_sched_functions(pc)) {  in save_wchan()
128 		*p = pc;  in save_wchan()
136 	unsigned long pc = 0;  in get_wchan()  local
139 		walk_stackframe(task, NULL, save_wchan, &pc);  in get_wchan()
140 	return pc;  in get_wchan()
146 static bool __save_trace(unsigned long pc, void *arg, bool nosched)  in __save_trace()  argument
150 	if (unlikely(nosched && in_sched_functions(pc)))  in __save_trace()
157 	trace->entries[trace->nr_entries++] = pc;  in __save_trace()
161 static bool save_trace(unsigned long pc, void *arg)  in save_trace()  argument
163 	return __save_trace(pc, arg, false);  in save_trace()