linux-kernel - Re: [RFC PATCH 1/2] lib, stackdepot: Add input prompt for STACKDEPOT option.

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Message-ID: <CAMuHMdUwdGHjOH7GTpq0nNg7Mx5bAwGEWJwEwUSoJL3GrEfv_A@mail.gmail.com>
Date:   Tue, 31 Aug 2021 17:54:54 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Imran Khan <imran.f.khan@...cle.com>
Cc:     Christoph Lameter <cl@...ux.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/2] lib, stackdepot: Add input prompt for STACKDEPOT option.

Hi Imran,

On Tue, Aug 31, 2021 at 8:28 AM Imran Khan <imran.f.khan@...cle.com> wrote:
> So far CONFIG_STACKDEPOT option was being selected by
> features that need STACKDEPOT support for their operations,
> for example KASAN.
> Since next patch makes use of STACKDEPOT to store user tracking
> information for slub debugger and since user tracking info may
> or may not store stack trace for allocating and freeing contexts,
> make STACKDEPOT explicitly configurable.
>
> Signed-off-by: Imran Khan <imran.f.khan@...cle.com>

Thanks for your patch!

> ---
>  lib/Kconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/lib/Kconfig b/lib/Kconfig
> index 6a6ae5312fa0..7e4b54f48af7 100644
> --- a/lib/Kconfig
> +++ b/lib/Kconfig
> @@ -665,8 +665,9 @@ config ARCH_STACKWALK
>         bool
>
>  config STACKDEPOT
> -       bool
> +       def_bool n

Why this change? "n" is the default anyway.

>         select STACKTRACE
> +       prompt "Enable stackdepot support"
>
>  config STACK_HASH_ORDER
>         int "stack depot hash size (12 => 4KB, 20 => 1024KB)"

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