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

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Message-ID: <20230315133659.4d608eb0@kernel.org>
Date:   Wed, 15 Mar 2023 13:36:59 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Eric Dumazet <edumazet@...gle.com>, David Ahern <dsahern@...il.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 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?