Re: [PATCH net-next 04/15] ethtool: add ethnl_parse_bitset() helper

[David Miller]

From: Michal Kubecek <mkubecek@xxxxxxx>
Date: Wed, 11 Mar 2020 22:40:23 +0100 (CET)

> +int ethnl_parse_bitset(unsigned long *val, unsigned long *mask,
> +		       unsigned int nbits, const struct nlattr *attr,
> +		       ethnl_string_array_t names,
> +		       struct netlink_ext_ack *extack)
> +{
 ...
> +		if (bit_val)
> +			set_bit(idx, val);
> +		if (!no_mask)
> +			set_bit(idx, mask);

You can certainly use non-atomic __set_bit() in this context.