linux-kernel - Re: [patch V2 1/4] net: dst: Prevent false sharing vs. dst_entry::_

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Date:   Wed, 15 Mar 2023 16:26:47 -0600
From:   David Ahern <dsahern@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: Re: [patch V2 1/4] net: dst: Prevent false sharing vs.
 dst_entry::__refcnt

On 3/15/23 2:36 PM, Jakub Kicinski wrote:
> On Tue,  7 Mar 2023 13:57:42 +0100 (CET) Thomas Gleixner wrote:
>> Move the rt[6i]_uncached[_list] members out of struct rtable and struct
>> rt6_info into struct dst_entry to provide padding and move the lwtstate
>> member after that so it ends up in the same cache line.
> 
> Eric, David, looks reasonable? 

Reviewed-by: David Ahern <dsahern@...nel.org>