linux-kernel - Re: [PATCH net-next 04/15] ethtool: add ethnl_parse

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Message-ID: <20200312092533.GL8012@unicorn.suse.cz>
Date:   Thu, 12 Mar 2020 10:25:33 +0100
From:   Michal Kubecek <mkubecek@...e.cz>
To:     netdev@...r.kernel.org
Cc:     David Miller <davem@...emloft.net>, kuba@...nel.org,
        jiri@...nulli.us, andrew@...n.ch, f.fainelli@...il.com,
        linville@...driver.com, johannes@...solutions.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 04/15] ethtool: add ethnl_parse_bitset() helper

On Wed, Mar 11, 2020 at 10:48:21PM -0700, David Miller wrote:
> From: Michal Kubecek <mkubecek@...e.cz>
> 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.

Right, thanks.

Michal