From mboxrd@z Thu Jan  1 00:00:00 1970
From: Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: should there still be arch-specific 4KSTACKS support?
Date: Sat, 23 Jun 2012 20:51:38 +0200
Message-ID: <CAMuHMdXqieWY5C_C9ituryRwPSNDU__XL8X=g6EXF3-RH1DDdw@mail.gmail.com>
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To: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Linux-Arch <linux-arch@vger.kernel.org>

Broadening the audience...

On Sat, Jun 23, 2012 at 5:47 PM, Robert P. J. Day <rpjday@crashcourse.c=
a> wrote:
> =C2=A0via some convoluted logic, i ended up doing the following searc=
h:
>
> $ grep -r 4KSTACKS *
> arch/sh/configs/r7785rp_defconfig:CONFIG_4KSTACKS=3Dy
> arch/sh/Kconfig.debug:config 4KSTACKS
> arch/sh/include/asm/thread_info.h:#if defined(CONFIG_4KSTACKS)
> arch/mn10300/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
> arch/m68k/Kconfig.machine:config 4KSTACKS
> arch/m68k/configs/m5208evb_defconfig:# CONFIG_4KSTACKS is not set
> arch/m68k/configs/m5275evb_defconfig:# CONFIG_4KSTACKS is not set
> arch/m68k/configs/m5475evb_defconfig:# CONFIG_4KSTACKS is not set
> arch/m68k/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
> arch/c6x/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
> drivers/lguest/interrupts_and_traps.c: =C2=A0 * Depending on the CONF=
IG_4KSTACKS option, the Guest can have one or
> kernel/lockdep.c: =C2=A0 =C2=A0 =C2=A0 =C2=A0* hardirq contexts (such=
 as on 4KSTACKS), so only
> $
>
> =C2=A0so even though 4KSTACKS support was officially removed in June =
of
> 2010:
>
> $ git show dcfa7262
>
> there's still traces of it, some of it obviously harmless, leftover
> cruft, but it would appear that both sh and m68k still provide a
> 4KSTACKS config option.
>
> =C2=A0how much of that can be tossed as useless?

Gr{oetje,eeting}s,

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 Geert

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

In personal conversations with technical people, I call myself a hacker=
=2E But
when I'm talking to journalists I just say "programmer" or something li=
ke that.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0 =C2=A0=C2=A0 -- Linus Torvalds