27 	unsigned long fp, sp, pc;  in walk_stackframe()  local
32 		pc = instruction_pointer(regs);  in walk_stackframe()
37 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
42 		pc = task->thread.ra;  in walk_stackframe()
49 		if (unlikely(!__kernel_text_address(pc) || fn(pc, arg)))  in walk_stackframe()
60 		if (regs && (regs->epc == pc) && (frame->fp & 0x7)) {  in walk_stackframe()
62 			pc = regs->ra;  in walk_stackframe()
65 			pc = ftrace_graph_ret_addr(current, NULL, frame->ra,  in walk_stackframe()
77 	unsigned long sp, pc;  in walk_stackframe()  local
82 		pc = instruction_pointer(regs);  in walk_stackframe()
85 		pc = (unsigned long)walk_stackframe;  in walk_stackframe()
89 		pc = task->thread.ra;  in walk_stackframe()
97 		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))  in walk_stackframe()
99 		pc = (*ksp++) - 0x4;  in walk_stackframe()
106 static bool print_trace_address(unsigned long pc, void *arg)  in print_trace_address()  argument
110 	print_ip_sym(loglvl, pc);  in print_trace_address()
120 static bool save_wchan(unsigned long pc, void *arg)  in save_wchan()  argument
122 	if (!in_sched_functions(pc)) {  in save_wchan()
124 		*p = pc;  in save_wchan()
132 	unsigned long pc = 0;  in get_wchan()  local
135 		walk_stackframe(task, NULL, save_wchan, &pc);  in get_wchan()
136 	return pc;  in get_wchan()
142 static bool __save_trace(unsigned long pc, void *arg, bool nosched)  in __save_trace()  argument
146 	if (unlikely(nosched && in_sched_functions(pc)))  in __save_trace()
153 	trace->entries[trace->nr_entries++] = pc;  in __save_trace()
157 static bool save_trace(unsigned long pc, void *arg)  in save_trace()  argument
159 	return __save_trace(pc, arg, false);  in save_trace()