From: Will Deacon <will.deacon@arm.com>
To: linux-arch@vger.kernel.org
Cc: Waiman.Long@hp.com, peterz@infradead.org,
linux-kernel@vger.kernel.org, paulmck@linux.vnet.ibm.com,
Will Deacon <will.deacon@arm.com>
Subject: [PATCH v3 4/8] lockref: remove homebrew cmpxchg64_relaxed macro definition
Date: Fri, 24 Jul 2015 15:04:37 +0100 [thread overview]
Message-ID: <1437746681-2809-5-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1437746681-2809-1-git-send-email-will.deacon@arm.com>
cmpxchg64_relaxed is now defined by linux/atomic.h, so we can
remove our local definition from the lockref code.
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
lib/lockref.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/lib/lockref.c b/lib/lockref.c
index 494994bf17c8..5a92189ad711 100644
--- a/lib/lockref.c
+++ b/lib/lockref.c
@@ -4,14 +4,6 @@
#if USE_CMPXCHG_LOCKREF
/*
- * Allow weakly-ordered memory architectures to provide barrier-less
- * cmpxchg semantics for lockref updates.
- */
-#ifndef cmpxchg64_relaxed
-# define cmpxchg64_relaxed cmpxchg64
-#endif
-
-/*
* Note that the "cmpxchg()" reloads the "old" value for the
* failure case.
*/
--
2.1.4
next prev parent reply other threads:[~2015-07-24 14:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 14:04 [PATCH v3 0/8] Add generic support for relaxed atomics Will Deacon
2015-07-24 14:04 ` Will Deacon
2015-07-24 14:04 ` [PATCH v3 1/8] atomics: add acquire/release/relaxed variants of some atomic operations Will Deacon
2015-07-27 9:14 ` Peter Zijlstra
2015-07-27 10:21 ` Will Deacon
2015-07-27 10:21 ` Will Deacon
2015-07-27 16:33 ` Will Deacon
2015-07-27 17:51 ` Peter Zijlstra
2015-07-24 14:04 ` [PATCH v3 2/8] asm-generic: rework atomic-long.h to avoid bulk code duplication Will Deacon
2015-07-24 14:04 ` [PATCH v3 3/8] asm-generic: add relaxed/acquire/release variants for atomic_long_t Will Deacon
2015-07-24 14:04 ` Will Deacon [this message]
2015-07-24 14:04 ` [PATCH v3 4/8] lockref: remove homebrew cmpxchg64_relaxed macro definition Will Deacon
2015-07-24 14:04 ` [PATCH v3 5/8] locking/qrwlock: implement queue_write_unlock using smp_store_release Will Deacon
2015-07-24 14:04 ` Will Deacon
2015-07-24 14:04 ` [PATCH v3 6/8] locking/qrwlock: make use of acquire/release/relaxed atomics Will Deacon
2015-07-24 14:04 ` Will Deacon
2015-07-24 14:04 ` [PATCH v3 7/8] include/llist: use linux/atomic.h instead of asm/cmpxchg.h Will Deacon
2015-07-24 14:04 ` Will Deacon
2015-07-24 14:04 ` [PATCH v3 8/8] ARM: atomics: define our SMP atomics in terms of _relaxed operations Will Deacon
2015-07-24 14:04 ` Will Deacon
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