linux-kernel - Re: [PATCH] m68k: Merge mmu and non-mmu versions of sys_call

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Date:	Sat, 7 May 2011 10:34:25 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Mikael Pettersson <mikpe@...uu.se>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"Linux/m68k" <linux-m68k@...r.kernel.org>,
	Greg Ungerer <gerg@...inux.org>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	uClinux list <uclinux-dev@...inux.org>
Subject: Re: [PATCH] m68k: Merge mmu and non-mmu versions of sys_call_table

On Thu, May 5, 2011 at 22:39, Mikael Pettersson <mikpe@...uu.se> wrote:
> Geert Uytterhoeven writes:
>  > On Thu, 5 May 2011, Arnd Bergmann wrote:
>  > > Did you check the macros in unistd to see if they match the
>  > > actual table? I guess it would be a good time to comment out
>  > > the ones that are not implemented in either of the two ABIs.
>  >
>  > Like this?
>  >
>  > warning: #warning syscall pselect6 not implemented
>  > warning: #warning syscall ppoll not implemented
>  > warning: #warning syscall recvmmsg not implemented
>  >
>  > Do we need pselect6 and ppoll? I have vague memories not requiring it.
>
> They close user-space race conditions, so you want them.

So do you recommend to backport the wiring up of pselect6/ppoll to -stable?
We always had their _NR_* defines, so I guess glibc was always compiled
with pselect6/ppoll support, and will use it if it's present.

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
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