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Message-ID: <dba8aec7-f236-4cb6-b53b-fabefcfa295a@paulmck-laptop> Date: Thu, 6 Apr 2023 07:17:09 -0700 From: "Paul E. McKenney" <paulmck@...nel.org> To: Herbert Xu <herbert@...dor.apana.org.au> 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 Thu, Apr 06, 2023 at 01:15:25PM +0800, Herbert Xu wrote: > 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. Agreed, preemption will be enabled in softirq, but interrupts can still happen, correct? Thanx, Paul
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