netdev - Re: [PATCH net-next 1/3] net: provide macros for commonly copied lockless queue stop/wake code

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Message-ID: <ZC5VbfkTIluwKYDn@gondor.apana.org.au>
Date:   Thu, 6 Apr 2023 13:15:25 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Alexander Duyck <alexander.duyck@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>, davem@...emloft.net,
        netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com
Subject: Re: [PATCH net-next 1/3] net: provide macros for commonly copied
 lockless queue stop/wake code

On Wed, Apr 05, 2023 at 03:20:39PM -0700, Paul E. McKenney wrote:
>
> Mightn't preemption or interrupts cause further issues?  Or are preemption
> and/or interrupts disabled across the relevant sections of code?

The code in question is supposed to run in softirq context.  So
both interrupts and preemption should be disabled.

Chyeers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt