Hi Ingo,
> From f5efafa83af8c46b9e81b010b46caeeadb450179 Mon Sep 17 00:00:00 2001
> From: Ingo Molnar <mi...@kernel.org>
> Date: Sat, 5 May 2018 10:46:41 +0200
> Subject: [PATCH] locking/atomics: Combine the atomic_andnot() and
> atomic64_andnot() API definitions
>
> The atomic_andnot() and atomic64_andnot() are defined in 4 separate groups
> spred out in the atomic.h header:
>
> #ifdef atomic_andnot
> ...
> #endif /* atomic_andnot */
> ...
> #ifndef atomic_andnot
> ...
> #endif
> ...
> #ifdef atomic64_andnot
> ...
> #endif /* atomic64_andnot */
> ...
> #ifndef atomic64_andnot
> ...
> #endif
>
> Combine them into unify them into two groups:
Nit: "Combine them into unify them into"
Andrea
>
> #ifdef atomic_andnot
> #else
> #endif
>
> ...
>
> #ifdef atomic64_andnot
> #else
> #endif
>
> So that one API group is defined in a single place within the header.
>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Linus Torvalds <torva...@linux-foundation.org>
> Cc: Andrew Morton <a...@linux-foundation.org>
> Cc: Thomas Gleixner <t...@linutronix.de>
> Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
> Cc: Will Deacon <will.dea...@arm.com>
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Ingo Molnar <mi...@kernel.org>
> ---
> include/linux/atomic.h | 72
> +++++++++++++++++++++++++-------------------------
> 1 file changed, 36 insertions(+), 36 deletions(-)
>
> diff --git a/include/linux/atomic.h b/include/linux/atomic.h
> index 352ecc72d7f5..1176cf7c6f03 100644
> --- a/include/linux/atomic.h
> +++ b/include/linux/atomic.h
> @@ -205,22 +205,6 @@
> # endif
> #endif
>
> -#ifdef atomic_andnot
> -
> -#ifndef atomic_fetch_andnot_relaxed
> -# define atomic_fetch_andnot_relaxed atomic_fetch_andnot
> -# define atomic_fetch_andnot_acquire atomic_fetch_andnot
> -# define atomic_fetch_andnot_release atomic_fetch_andnot
> -#else
> -# ifndef atomic_fetch_andnot
> -# define atomic_fetch_andnot(...)
> __atomic_op_fence(atomic_fetch_andnot, __VA_ARGS__)
> -# define atomic_fetch_andnot_acquire(...)
> __atomic_op_acquire(atomic_fetch_andnot, __VA_ARGS__)
> -# define atomic_fetch_andnot_release(...)
> __atomic_op_release(atomic_fetch_andnot, __VA_ARGS__)
> -# endif
> -#endif
> -
> -#endif /* atomic_andnot */
> -
> #ifndef atomic_fetch_xor_relaxed
> # define atomic_fetch_xor_relaxed atomic_fetch_xor
> # define atomic_fetch_xor_acquire atomic_fetch_xor
> @@ -338,7 +322,22 @@ static inline int atomic_add_unless(atomic_t *v, int a,
> int u)
> # define atomic_inc_not_zero(v) atomic_add_unless((v),
> 1, 0)
> #endif
>
> -#ifndef atomic_andnot
> +#ifdef atomic_andnot
> +
> +#ifndef atomic_fetch_andnot_relaxed
> +# define atomic_fetch_andnot_relaxed atomic_fetch_andnot
> +# define atomic_fetch_andnot_acquire atomic_fetch_andnot
> +# define atomic_fetch_andnot_release atomic_fetch_andnot
> +#else
> +# ifndef atomic_fetch_andnot
> +# define atomic_fetch_andnot(...)
> __atomic_op_fence(atomic_fetch_andnot, __VA_ARGS__)
> +# define atomic_fetch_andnot_acquire(...)
> __atomic_op_acquire(atomic_fetch_andnot, __VA_ARGS__)
> +# define atomic_fetch_andnot_release(...)
> __atomic_op_release(atomic_fetch_andnot, __VA_ARGS__)
> +# endif
> +#endif
> +
> +#else /* !atomic_andnot: */
> +
> static inline void atomic_andnot(int i, atomic_t *v)
> {
> atomic_and(~i, v);
> @@ -363,7 +362,8 @@ static inline int atomic_fetch_andnot_release(int i,
> atomic_t *v)
> {
> return atomic_fetch_and_release(~i, v);
> }
> -#endif
> +
> +#endif /* !atomic_andnot */
>
> /**
> * atomic_inc_not_zero_hint - increment if not null
> @@ -600,22 +600,6 @@ static inline int atomic_dec_if_positive(atomic_t *v)
> # endif
> #endif
>
> -#ifdef atomic64_andnot
> -
> -#ifndef atomic64_fetch_andnot_relaxed
> -# define atomic64_fetch_andnot_relaxed atomic64_fetch_andnot
> -# define atomic64_fetch_andnot_acquire atomic64_fetch_andnot
> -# define atomic64_fetch_andnot_release atomic64_fetch_andnot
> -#else
> -# ifndef atomic64_fetch_andnot
> -# define atomic64_fetch_andnot(...)
> __atomic_op_fence(atomic64_fetch_andnot, __VA_ARGS__)
> -# define atomic64_fetch_andnot_acquire(...)
> __atomic_op_acquire(atomic64_fetch_andnot, __VA_ARGS__)
> -# define atomic64_fetch_andnot_release(...)
> __atomic_op_release(atomic64_fetch_andnot, __VA_ARGS__)
> -# endif
> -#endif
> -
> -#endif /* atomic64_andnot */
> -
> #ifndef atomic64_fetch_xor_relaxed
> # define atomic64_fetch_xor_relaxed atomic64_fetch_xor
> # define atomic64_fetch_xor_acquire atomic64_fetch_xor
> @@ -672,7 +656,22 @@ static inline int atomic_dec_if_positive(atomic_t *v)
> # define atomic64_try_cmpxchg_release atomic64_try_cmpxchg
> #endif
>
> -#ifndef atomic64_andnot
> +#ifdef atomic64_andnot
> +
> +#ifndef atomic64_fetch_andnot_relaxed
> +# define atomic64_fetch_andnot_relaxed atomic64_fetch_andnot
> +# define atomic64_fetch_andnot_acquire atomic64_fetch_andnot
> +# define atomic64_fetch_andnot_release atomic64_fetch_andnot
> +#else
> +# ifndef atomic64_fetch_andnot
> +# define atomic64_fetch_andnot(...)
> __atomic_op_fence(atomic64_fetch_andnot, __VA_ARGS__)
> +# define atomic64_fetch_andnot_acquire(...)
> __atomic_op_acquire(atomic64_fetch_andnot, __VA_ARGS__)
> +# define atomic64_fetch_andnot_release(...)
> __atomic_op_release(atomic64_fetch_andnot, __VA_ARGS__)
> +# endif
> +#endif
> +
> +#else /* !atomic64_andnot: */
> +
> static inline void atomic64_andnot(long long i, atomic64_t *v)
> {
> atomic64_and(~i, v);
> @@ -697,7 +696,8 @@ static inline long long
> atomic64_fetch_andnot_release(long long i, atomic64_t *v
> {
> return atomic64_fetch_and_release(~i, v);
> }
> -#endif
> +
> +#endif /* !atomic64_andnot */
>
> #define atomic64_cond_read_relaxed(v, c)
> smp_cond_load_relaxed(&(v)->counter, (c))
> #define atomic64_cond_read_acquire(v, c)
> smp_cond_load_acquire(&(v)->counter, (c))
