linux-kernel - Re: [PATCH net-next 1/5] netdevice: convert private flags

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Date: Thu, 27 Jun 2024 12:55:41 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, David Ahern
 <dsahern@...nel.org>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Andrew Lunn
 <andrew@...n.ch>, <nex.sw.ncis.osdt.itp.upstreaming@...el.com>,
 <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 1/5] netdevice: convert private flags > BIT(31)
 to bitfields

On Thu, 27 Jun 2024 11:50:40 +0200 Alexander Lobakin wrote:
> > I don't think we should group them indiscriminately. Better to add the
> > asserts flag by flag. Neither of the flags you're breaking out in this
> > patch are used on the fast path.
> > 
> > Or is the problem that CACHELINE_ASSERT_GROUP_MEMBER doesn't work on
> > bitfields?  
> 
> It generates sizeof(bitfield) which the compilers don't like and don't
> want to compile ._.

Mm. Okay, I have no better ideas then.

Do consider moving the cold flags next to wol_enabled, tho?