438 		       struct blk_user_trace_setup *buts)  in do_blk_trace_setup()  argument
444 	if (!buts->buf_size || !buts->buf_nr)  in do_blk_trace_setup()
447 	strncpy(buts->name, name, BLKTRACE_BDEV_SIZE);  in do_blk_trace_setup()
448 	buts->name[BLKTRACE_BDEV_SIZE - 1] = '\0';  in do_blk_trace_setup()
454 	for (i = 0; i < strlen(buts->name); i++)  in do_blk_trace_setup()
455 		if (buts->name[i] == '/')  in do_blk_trace_setup()
456 			buts->name[i] = '_';  in do_blk_trace_setup()
483 	dir = debugfs_create_dir(buts->name, blk_tree_root);  in do_blk_trace_setup()
503 	bt->rchan = relay_open("trace", dir, buts->buf_size,  in do_blk_trace_setup()
504 				buts->buf_nr, &blk_relay_callbacks, bt);  in do_blk_trace_setup()
508 	bt->act_mask = buts->act_mask;  in do_blk_trace_setup()
515 	if (buts->start_lba)  in do_blk_trace_setup()
516 		bt->start_lba = buts->start_lba;  in do_blk_trace_setup()
517 	if (buts->end_lba)  in do_blk_trace_setup()
518 		bt->end_lba = buts->end_lba;  in do_blk_trace_setup()
520 	bt->pid = buts->pid;  in do_blk_trace_setup()
543 	struct blk_user_trace_setup buts;  in blk_trace_setup()  local
546 	ret = copy_from_user(&buts, arg, sizeof(buts));  in blk_trace_setup()
550 	ret = do_blk_trace_setup(q, name, dev, bdev, &buts);  in blk_trace_setup()
554 	if (copy_to_user(arg, &buts, sizeof(buts))) {  in blk_trace_setup()
567 	struct blk_user_trace_setup buts;  in compat_blk_trace_setup()  local
574 	buts = (struct blk_user_trace_setup) {  in compat_blk_trace_setup()
583 	ret = do_blk_trace_setup(q, name, dev, bdev, &buts);  in compat_blk_trace_setup()
587 	if (copy_to_user(arg, &buts.name, ARRAY_SIZE(buts.name))) {  in compat_blk_trace_setup()