debugfs_write_file_bool
rc = debugfs_write_file_bool(file, user_buf, count, ppos);
result = debugfs_write_file_bool(filp, ubuf, cnt, ppos);
ret = debugfs_write_file_bool(file, user_buf, count, ppos);
EXPORT_SYMBOL_GPL(debugfs_write_file_bool);
.write = debugfs_write_file_bool,
.write = debugfs_write_file_bool,
ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
result = debugfs_write_file_bool(filp, ubuf, cnt, ppos);