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References: <20210525083340.27722-1-nikita.shubin@maquefel.me>
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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Tue, 25 May 2021 12:19:27 +0200
Message-ID: <CACRpkdYkb+-y366esEDZBDMNQ7s6zOfHEPotNaTUi3m95QrBFw@mail.gmail.com>
Subject: Re: [RFC][PATCH 0/1] ep93xx: clock: convert in-place
To:     Nikita Shubin <nikita.shubin@maquefel.me>
Cc:     Russell King <linux@armlinux.org.uk>,
        Hartley Sweeten <hsweeten@visionengravers.com>,
        Alexander Sverdlin <alexander.sverdlin@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Ard Biesheuvel <ardb@kernel.org>,
        Mike Rapoport <rppt@kernel.org>,
        Gregory Fong <gregory.0xf0@gmail.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        YiFei Zhu <yifeifz2@illinois.edu>,
        =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
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On Tue, May 25, 2021 at 10:36 AM Nikita Shubin
<nikita.shubin@maquefel.me> wrote:

>    text    data     bss     dec     hex filename
> 4491689  920748   92840 5505277  5400fd vmlinux
(...)
>    text    data     bss     dec     hex filename
> 4534485  927424   90304 5552213  54b855 vmlinux

So IIUC that is 49472 bytes more text & data? ~48KB.

I think what really matters is the 2MB limit on compressed
kernel size, which I guess can be pushed a bit by
compressing the kernel with something violent like ZST but
ultimately what EP93xx might want to do is to do what
the other SoCs are doing for accommodating Android: move
out as many drivers as possible to be modules and
not compiled into the static kernel. Do we have candidates
for that? Are people normally using modules on EP93xx?

I am  modernizing XScale IXP4xx and it doesn't suffer
from this as much: even the really ancient NSLU2 has
32MB of RAM.

Yours,
Linus Walleij