linux-kernel - Re: [PATCH net-next] mctp: Reorder fields in 'struct mctp

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Message-ID: <ZJBpGFF7870dcWe4@nanopsycho>
Date:   Mon, 19 Jun 2023 16:41:28 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Jeremy Kerr <jk@...econstruct.com.au>,
        Matt Johnston <matt@...econstruct.com.au>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] mctp: Reorder fields in 'struct mctp_route'

Sun, Jun 18, 2023 at 11:33:55AM CEST, christophe.jaillet@...adoo.fr wrote:
>Group some variables based on their sizes to reduce hole and avoid padding.
>On x86_64, this shrinks the size of 'struct mctp_route'
>from 72 to 64 bytes.
>
>It saves a few bytes of memory and is more cache-line friendly.
>
>Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Jiri Pirko <jiri@...dia.com>