netdev - Re: [PATCH net-next v4 05/10] pie: rearrange structure members and their initializations

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Message-ID: <CADAms0zvGp4ffqmvZV6RVOTfrosjt6Ht6EkyQ594yJYQFTJBXA@mail.gmail.com>
Date:   Tue, 21 Jan 2020 21:14:50 +0530
From:   Gautam Ramakrishnan <gautamramk@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        "Mohit P. Tahiliani" <tahiliani@...k.edu.in>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Dave Taht <dave.taht@...il.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Leslie Monis <lesliemonis@...il.com>
Subject: Re: [PATCH net-next v4 05/10] pie: rearrange structure members and
 their initializations

On Tue, Jan 21, 2020 at 8:05 PM David Miller <davem@...emloft.net> wrote:
>
> From: gautamramk@...il.com
> Date: Tue, 21 Jan 2020 19:42:44 +0530
>
> > From: "Mohit P. Tahiliani" <tahiliani@...k.edu.in>
> >
> > Rearrange the members of the structures such that they appear in
> > order of their types. Also, change the order of their
> > initializations to match the order in which they appear in the
> > structures. This improves the code's readability and consistency.
> >
> > Signed-off-by: Mohit P. Tahiliani <tahiliani@...k.edu.in>
> > Signed-off-by: Leslie Monis <lesliemonis@...il.com>
> > Signed-off-by: Gautam Ramakrishnan <gautamramk@...il.com>
>
> What matters for structure member ordering is dense packing and
> grouping commonly-used-together elements for performance.
>
We shall reorder the variables as per their appearance in the
structure and re-submit. Could you elaborate a bit on dense packing?
> "order of their types" are none of those things.