netdev - Re: [RFC v3 net-next 13/18] net/sched: Introduce the TBS Qdisc

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Message-Id: <20180424.095048.818224012961344954.davem@davemloft.net>
Date:   Tue, 24 Apr 2018 09:50:48 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     tglx@...utronix.de
Cc:     jesus.sanchez-palencia@...el.com, netdev@...r.kernel.org,
        jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        vinicius.gomes@...el.com, richardcochran@...il.com,
        intel-wired-lan@...ts.osuosl.org, anna-maria@...utronix.de,
        henrik@...tad.us, john.stultz@...aro.org, levi.pearson@...man.com,
        edumazet@...gle.com, willemb@...gle.com, mlichvar@...hat.com
Subject: Re: [RFC v3 net-next 13/18] net/sched: Introduce the TBS Qdisc

From: Thomas Gleixner <tglx@...utronix.de>
Date: Tue, 24 Apr 2018 10:50:04 +0200 (CEST)

> So adding 8 bytes to spare duplicated code will not change the kmem_cache
> object size and I really doubt that anyone will notice.

It's about where the cache lines end up when each and every byte is added
to the structure, not just the slab object size.