From: Andrea Parri <andrea.parri@amarulasolutions.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, aryabinin@virtuozzo.com,
boqun.feng@gmail.com, catalin.marinas@arm.com,
dvyukov@google.com, will.deacon@arm.com,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] locking/atomics: Combine the atomic_andnot() and atomic64_andnot() API definitions
Date: Sun, 6 May 2018 16:15:52 +0200 [thread overview]
Message-ID: <20180506141552.GA28937@andrea> (raw)
In-Reply-To: <20180505085445.cmdnqh6xpnpfoqzb@gmail.com>
Hi Ingo,
> From f5efafa83af8c46b9e81b010b46caeeadb450179 Mon Sep 17 00:00:00 2001
> From: Ingo Molnar <mingo@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 <peterz@infradead.org>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Ingo Molnar <mingo@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))
next prev parent reply other threads:[~2018-05-06 14:16 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-04 17:39 [PATCH 0/6] arm64: add instrumented atomics Mark Rutland
2018-05-04 17:39 ` [PATCH 1/6] locking/atomic, asm-generic: instrument ordering variants Mark Rutland
2018-05-04 18:01 ` Peter Zijlstra
2018-05-04 18:09 ` Mark Rutland
2018-05-04 18:24 ` Peter Zijlstra
2018-05-05 9:12 ` Mark Rutland
2018-05-05 8:11 ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Ingo Molnar
2018-05-05 8:36 ` [PATCH] locking/atomics: Simplify the op definitions in atomic.h some more Ingo Molnar
2018-05-05 8:54 ` [PATCH] locking/atomics: Combine the atomic_andnot() and atomic64_andnot() API definitions Ingo Molnar
2018-05-06 12:15 ` [tip:locking/core] " tip-bot for Ingo Molnar
2018-05-06 14:15 ` Andrea Parri [this message]
2018-05-06 12:14 ` [tip:locking/core] locking/atomics: Simplify the op definitions in atomic.h some more tip-bot for Ingo Molnar
2018-05-09 7:33 ` Peter Zijlstra
2018-05-09 13:03 ` Will Deacon
2018-05-15 8:54 ` Ingo Molnar
2018-05-15 8:35 ` Ingo Molnar
2018-05-15 11:41 ` Peter Zijlstra
2018-05-15 12:13 ` Peter Zijlstra
2018-05-15 15:43 ` Mark Rutland
2018-05-15 17:10 ` Peter Zijlstra
2018-05-15 17:53 ` Mark Rutland
2018-05-15 18:11 ` Peter Zijlstra
2018-05-15 18:15 ` Peter Zijlstra
2018-05-15 18:52 ` Linus Torvalds
2018-05-15 19:39 ` Peter Zijlstra
2018-05-21 17:12 ` Mark Rutland
2018-05-06 14:12 ` [PATCH] " Andrea Parri
2018-05-06 14:57 ` Ingo Molnar
2018-05-07 9:54 ` Andrea Parri
2018-05-18 18:43 ` Palmer Dabbelt
2018-05-05 8:47 ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Peter Zijlstra
2018-05-05 9:04 ` Ingo Molnar
2018-05-05 9:24 ` Peter Zijlstra
2018-05-05 9:38 ` Ingo Molnar
2018-05-05 10:00 ` [RFC PATCH] locking/atomics/powerpc: Introduce optimized cmpxchg_release() family of APIs for PowerPC Ingo Molnar
2018-05-05 10:26 ` Boqun Feng
2018-05-06 1:56 ` Benjamin Herrenschmidt
2018-05-05 10:16 ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Boqun Feng
2018-05-05 10:35 ` [RFC PATCH] locking/atomics/powerpc: Clarify why the cmpxchg_relaxed() family of APIs falls back to full cmpxchg() Ingo Molnar
2018-05-05 11:28 ` Boqun Feng
2018-05-05 13:27 ` [PATCH] locking/atomics/powerpc: Move cmpxchg helpers to asm/cmpxchg.h and define the full set of cmpxchg APIs Ingo Molnar
2018-05-05 14:03 ` Boqun Feng
2018-05-06 12:11 ` Ingo Molnar
2018-05-07 1:04 ` Boqun Feng
2018-05-07 6:50 ` Ingo Molnar
2018-05-06 12:13 ` [tip:locking/core] " tip-bot for Boqun Feng
2018-05-07 13:31 ` [PATCH v2] " Boqun Feng
2018-05-05 9:05 ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Dmitry Vyukov
2018-05-05 9:32 ` Peter Zijlstra
2018-05-07 6:43 ` [RFC PATCH] locking/atomics/x86/64: Clean up and fix details of <asm/atomic64_64.h> Ingo Molnar
2018-05-05 9:09 ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Ingo Molnar
2018-05-05 9:29 ` Peter Zijlstra
2018-05-05 10:48 ` [PATCH] locking/atomics: Shorten the __atomic_op() defines to __op() Ingo Molnar
2018-05-05 10:59 ` Ingo Molnar
2018-05-06 12:15 ` [tip:locking/core] " tip-bot for Ingo Molnar
2018-05-06 12:14 ` [tip:locking/core] locking/atomics: Clean up the atomic.h maze of #defines tip-bot for Ingo Molnar
2018-05-04 17:39 ` [PATCH 2/6] locking/atomic, asm-generic: instrument atomic*andnot*() Mark Rutland
2018-05-04 17:39 ` [PATCH 3/6] arm64: use <linux/atomic.h> for cmpxchg Mark Rutland
2018-05-04 17:39 ` [PATCH 4/6] arm64: fix assembly constraints " Mark Rutland
2018-05-04 17:39 ` [PATCH 5/6] arm64: use instrumented atomics Mark Rutland
2018-05-04 17:39 ` [PATCH 6/6] arm64: instrument smp_{load_acquire,store_release} Mark Rutland
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180506141552.GA28937@andrea \
--to=andrea.parri@amarulasolutions.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=aryabinin@virtuozzo.com \
--cc=boqun.feng@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=dvyukov@google.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@kernel.org \
--cc=paulmck@us.ibm.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).