Re: [PATCH v2 0/6] bitops: let optimize out non-atomic bitops on compile-time constants

Alexander Lobakin
2022-06-15T14:19:42Z

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Mon, 13 Jun 2022 17:22:30 +0200

> Hi Olek,

Hi!

>
> On Mon, Jun 13, 2022 at 4:28 PM Alexander Lobakin
> <alexandr.lobakin@intel.com> wrote:
> > From: Geert Uytterhoeven <geert@linux-m68k.org>
> > > On Fri, Jun 10, 2022 at 1:35 PM Alexander Lobakin
> > > <alexandr.lobakin@intel.com> wrote:
> > > On m68k, using gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04), this
> > > blows up immediately with:
> >
> > Yeah I saw the kernel bot report already, sorry for that >_< Fixed
> > in v3 already, will send in 1-2 days.
>
> Is it simple to fix?
> I might be able to give the fixed v2 a try before that.
> Thanks!

Oh, sorry for the late reply, was busy with stuff.
It's linear, there are (after applying the series) some static
inlines in arch/m68k/include/asm/bitops.h (those which were
converted from macros in patch 3/6), 7 ops in total, you just need
to create definitions with 'arch_' prefix for each of them, e.g.

#define arch_test_bit test_bit
#define arch___set_bit __set_bit // will be ___set_bit after 5/6

etc.
Hope I explained it clear-ish :)

>
> Gr{oetje,eeting}s,
>
> 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. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds

Thanks,
Olek