netdev - Re: [PATCH net-next] once: add DO_ONCE

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Message-ID: <20221003102520.75fc51b4@kernel.org>
Date:   Mon, 3 Oct 2022 10:25:20 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Willy Tarreau <w@....eu>
Subject: Re: [PATCH net-next] once: add DO_ONCE_SLOW() for sleepable
 contexts

On Sun, 2 Oct 2022 00:44:28 +0200 Jason A. Donenfeld wrote:
> So instead, why not just branch on whether or not we can sleep here, if
> that can be worked out dynamically? 

IDK if we can dynamically work out if _all_ _possible_ callers are 
in a specific context, can we?

> If not, and if you really do need two sets of macros and functions,
> at least you can call the new one something other than "slow"? Maybe
> something about being _SLEEPABLE() instead?

+1 for s/SLOW/SLEEPABLE/. I was about to suggest s/SLOW/TASK/.
But I guess it's already applied..