Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Wed, 23 May 2018 16:02:46 +0200 | Subject | Re: [PATCH 04/13] atomics/treewide: make atomic_fetch_add_unless() optional |
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On Wed, May 23, 2018 at 3:35 PM, Mark Rutland <mark.rutland@arm.com> wrote: > Several architectures these have a near-identical implementation based > on atomic_read() and atomic_cmpxchg() that we can instead define in > <linux/atomic.h>, so let's do so, using something close to the existing > x86 implementation with try_cmpxchg(). > > Where an architecture provides its own atomic_fetch_add_unless(), it > must define a preprocessor symbol for it. The instrumented atomics are > updated accordingly. > > Note that arch/arc's existing atomic_fetch_add_unless() had redundant > barriers, as these are already present in its atomic_cmpxchg() > implementation. > > There should be no functional change as a result of this patch. > > Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> arch/m68k/include/asm/atomic.h | 15 --------------- > include/linux/atomic.h | 23 +++++++++++++++++++++++
For m68k: Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
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
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