On Wed, May 23, 2018 at 3:35 PM, Mark Rutland <[email protected]> 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 <[email protected]>
> arch/m68k/include/asm/atomic.h | 15 --------------- > include/linux/atomic.h | 23 +++++++++++++++++++++++ For m68k: Reviewed-by: Geert Uytterhoeven <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected] 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
