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Date: Sun, 24 Apr 2022 10:33:25 +0200 From: Sebastian Andrzej Siewior <bigeasy@...utronix.de> To: Peter Zijlstra <peterz@...radead.org> Cc: Eric Dumazet <edumazet@...gle.com>, netdev <netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [PATCH net] net: Use this_cpu_inc() to increment net->core_stats On 2022-04-23 11:24:39 [+0200], Peter Zijlstra wrote: > Eric is right. READ_ONCE() is 'required' to ensure the compiler doesn't > split the load and KCSAN konws about these things. So we should update the documentation and make sure that is done tree-wide with the remote per-CPU access. I will update that patch accordingly and add the other thing to my todo list. Sebastian
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