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From: "tip-bot2 for Mark Rutland" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>,
	Arnd Bergmann <arnd@arndb.de>, Boqun Feng <boqun.feng@gmail.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Will Deacon <will@kernel.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: locking/core] locking/atomic: atomic: simplify ifdeffery
Date: Wed, 26 May 2021 11:24:39 -0000	[thread overview]
Message-ID: <162202827997.29796.12484539820351813813.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20210525140232.53872-9-mark.rutland@arm.com>

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     d0e03218ca3be48c6f7109e4810d58e7b7dd4135
Gitweb:        https://git.kernel.org/tip/d0e03218ca3be48c6f7109e4810d58e7b7dd4135
Author:        Mark Rutland <mark.rutland@arm.com>
AuthorDate:    Tue, 25 May 2021 15:02:07 +01:00
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Wed, 26 May 2021 13:20:50 +02:00

locking/atomic: atomic: simplify ifdeffery

Now that asm-generic/atomic.h is only used by architectures without any
architecture-specific atomic definitions, we know that there will be no
architecture-specific implementations to override, and can remove the
ifdeffery this has previously required, bringing it into line with
asm-generic/atomic64.h.

At the same time, we can implement atomic_add() and atomic_sub()
directly using ATOMIC_OP(), since we know architectures won't provide
atomic_add_return() or atomic_sub_return().

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-9-mark.rutland@arm.com
---
 include/asm-generic/atomic.h | 46 +++--------------------------------
 1 file changed, 4 insertions(+), 42 deletions(-)

diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index d4bf803..316c82a 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -93,65 +93,27 @@ static inline int atomic_fetch_##op(int i, atomic_t *v)			\
 
 #endif /* CONFIG_SMP */
 
-#ifndef atomic_add_return
 ATOMIC_OP_RETURN(add, +)
-#endif
-
-#ifndef atomic_sub_return
 ATOMIC_OP_RETURN(sub, -)
-#endif
 
-#ifndef atomic_fetch_add
 ATOMIC_FETCH_OP(add, +)
-#endif
-
-#ifndef atomic_fetch_sub
 ATOMIC_FETCH_OP(sub, -)
-#endif
-
-#ifndef atomic_fetch_and
 ATOMIC_FETCH_OP(and, &)
-#endif
-
-#ifndef atomic_fetch_or
 ATOMIC_FETCH_OP(or, |)
-#endif
-
-#ifndef atomic_fetch_xor
 ATOMIC_FETCH_OP(xor, ^)
-#endif
 
-#ifndef atomic_and
+ATOMIC_OP(add, +)
+ATOMIC_OP(sub, -)
 ATOMIC_OP(and, &)
-#endif
-
-#ifndef atomic_or
 ATOMIC_OP(or, |)
-#endif
-
-#ifndef atomic_xor
 ATOMIC_OP(xor, ^)
-#endif
 
 #undef ATOMIC_FETCH_OP
 #undef ATOMIC_OP_RETURN
 #undef ATOMIC_OP
 
-#ifndef atomic_read
-#define atomic_read(v)	READ_ONCE((v)->counter)
-#endif
-
-#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
-
-static inline void atomic_add(int i, atomic_t *v)
-{
-	atomic_add_return(i, v);
-}
-
-static inline void atomic_sub(int i, atomic_t *v)
-{
-	atomic_sub_return(i, v);
-}
+#define atomic_read(v)			READ_ONCE((v)->counter)
+#define atomic_set(v, i)		WRITE_ONCE(((v)->counter), (i))
 
 #define atomic_xchg(ptr, v)		(xchg(&(ptr)->counter, (v)))
 #define atomic_cmpxchg(v, old, new)	(cmpxchg(&((v)->counter), (old), (new)))

  reply	other threads:[~2021-05-26 11:26 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-25 14:01 [PATCH v2 00/33] locking/atomic: convert all architectures to ARCH_ATOMIC Mark Rutland
2021-05-25 14:02 ` [PATCH v2 01/33] locking/atomic: make ARCH_ATOMIC a Kconfig symbol Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 02/33] locking/atomic: net: use linux/atomic.h for xchg & cmpxchg Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 03/33] locking/atomic: h8300: use asm-generic exclusively Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 04/33] locking/atomic: microblaze: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-31 12:31   ` [PATCH v2 04/33] " Michal Simek
2021-05-25 14:02 ` [PATCH v2 05/33] locking/atomic: openrisc: avoid asm-generic/atomic.h Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 06/33] locking/atomic: atomic: remove stale comments Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 07/33] locking/atomic: atomic: remove redundant include Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 08/33] locking/atomic: atomic: simplify ifdeffery Mark Rutland
2021-05-26 11:24   ` tip-bot2 for Mark Rutland [this message]
2021-05-25 14:02 ` [PATCH v2 09/33] locking/atomic: atomic: support ARCH_ATOMIC Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 10/33] locking/atomic: atomic64: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 11/33] locking/atomic: cmpxchg: make `generic` a prefix Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 12/33] locking/atomic: cmpxchg: support ARCH_ATOMIC Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 13/33] locking/atomic: alpha: move to ARCH_ATOMIC Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 14/33] locking/atomic: arc: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 15/33] locking/atomic: arm: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 16/33] locking/atomic: csky: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 17/33] locking/atomic: h8300: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 18/33] locking/atomic: hexagon: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 19/33] locking/atomic: ia64: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 20/33] locking/atomic: m68k: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 21/33] locking/atomic: microblaze: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-31 12:31   ` [PATCH v2 21/33] " Michal Simek
2021-05-25 14:02 ` [PATCH v2 22/33] locking/atomic: mips: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 23/33] locking/atomic: nds32: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 24/33] locking/atomic: nios2: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 25/33] locking/atomic: openrisc: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 26/33] locking/atomic: parisc: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 27/33] locking/atomic: powerpc: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 28/33] locking/atomic: riscv: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 29/33] locking/atomic: sh: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 30/33] locking/atomic: sparc: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 31/33] locking/atomic: xtensa: " Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 32/33] locking/atomic: delete !ARCH_ATOMIC remnants Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-25 14:02 ` [PATCH v2 33/33] locking/atomics: atomic-instrumented: simplify ifdeffery Mark Rutland
2021-05-26 11:24   ` [tip: locking/core] " tip-bot2 for Mark Rutland
2021-05-26 11:30 ` [PATCH v2 00/33] locking/atomic: convert all architectures to ARCH_ATOMIC Peter Zijlstra
2021-05-26 12:29   ` Junio C Hamano
2021-05-26 14:19     ` Peter Zijlstra
2021-06-05  5:56 ` Randy Dunlap
2021-06-18  8:48   ` Mark Rutland
2021-06-27 21:47     ` Randy Dunlap
2021-06-28 21:22       ` Randy Dunlap
2021-06-28 22:13         ` Peter Zijlstra
2021-06-28 22:21           ` Vineet Gupta
2021-06-28 22:21           ` Randy Dunlap
2021-06-29  7:36             ` Arnd Bergmann
2021-06-30  7:55               ` Peter Zijlstra
2021-06-30 12:24                 ` Arnd Bergmann

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