98 	add_elem(fbuf, fbuf->ret_idx + 1, pc);  in ftrace_enter()
100 	if (fbuf->ret_idx < FTRACE_RETFUNC_DEPTH) {  in ftrace_enter()
101 		fbuf->ret_stack[fbuf->ret_idx] = *lr;  in ftrace_enter()
102 		fbuf->begin_time[fbuf->ret_idx] = now;  in ftrace_enter()
103 		fbuf->ret_idx++;  in ftrace_enter()
127 	if (!fbuf || !fbuf->ret_idx || fbuf->ret_idx > FTRACE_RETFUNC_DEPTH)  in ftrace_return()
130 	fbuf->ret_idx--;  in ftrace_return()
131 	start = fbuf->begin_time[fbuf->ret_idx];  in ftrace_return()
135 	return fbuf->ret_stack[fbuf->ret_idx];  in ftrace_return()
139 void __noprof ftrace_longjmp(unsigned int *ret_idx)  in ftrace_longjmp()  argument
141 	while (__ftrace_buf_start.ret_idx > *ret_idx)  in ftrace_longjmp()
145 void __noprof ftrace_setjmp(unsigned int *ret_idx)  in ftrace_setjmp()  argument
147 	*ret_idx = __ftrace_buf_start.ret_idx;  in ftrace_setjmp()