linux-kernel - Re: [PATCH v4] nubus: Don't list slot resources by default

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Message-ID: <CAMuHMdXLsnfQ4XhJiuE54BjGaCMAxvzOR+GGB9iFD8pYXprfxQ@mail.gmail.com>
Date:   Mon, 15 May 2023 11:44:37 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Finn Thain <fthain@...ux-m68k.org>
Cc:     Brad Boyer <flar@...andria.com>, linux-m68k@...ts.linux-m68k.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] nubus: Don't list slot resources by default

On Wed, Apr 5, 2023 at 6:19 AM Finn Thain <fthain@...ux-m68k.org> wrote:
> Some Nubus card ROMs contain many slot resources. A single Radius video
> card produced well over a thousand entries under /proc/bus/nubus/.
> Populating /proc/bus/nubus/ on a slow machine with several such cards
> installed takes long enough that the user may think that the system is
> wedged. All those procfs entries also consume significant RAM though
> they are not normally needed (except by developers).
> Omit these resources from /proc/bus/nubus/ by default and add a kernel
> parameter to enable them when needed.
> On the test machine, this saved 300 kB and 10 seconds.
>
> Cc: Brad Boyer <flar@...andria.com>
> Tested-by: Stan Johnson <userm57@...oo.com>
> Signed-off-by: Finn Thain <fthain@...ux-m68k.org>
> ---
> Changed since v3:
>  - Better commentary.
> Changed since v2:
>  - Added commentary.
>  - Moved declaration to nubus.h.
> Changed since v1:
>  - Expanded to cover all slot resources in procfs.

Reviewed-by: Geert Uytterhoeven <geert@...ux-m68k.org>
i.e. will queue in the m68k for-v6.5 branch.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds