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 v2 3/7] asm-generic: add relaxed/acquire/release variants for atomic_long_t
Date: Thu, 16 Jul 2015 16:32:34 +0100 [thread overview]
Message-ID: <1437060758-10381-4-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1437060758-10381-1-git-send-email-will.deacon@arm.com>
This patch adds atomic_long_t wrappers for the new relaxed atomic
operations.
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
include/asm-generic/atomic-long.h | 86 +++++++++++++++++++++++++++------------
1 file changed, 59 insertions(+), 27 deletions(-)
diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h
index beaea541adfb..a94cbebbc33d 100644
--- a/include/asm-generic/atomic-long.h
+++ b/include/asm-generic/atomic-long.h
@@ -34,19 +34,69 @@ typedef atomic_t atomic_long_t;
#endif
-static inline long atomic_long_read(atomic_long_t *l)
-{
- ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
-
- return (long)ATOMIC_LONG_PFX(_read)(v);
+#define ATOMIC_LONG_READ_OP(mo) \
+static inline long atomic_long_read##mo(atomic_long_t *l) \
+{ \
+ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
+ \
+ return (long)ATOMIC_LONG_PFX(_read##mo)(v); \
}
+ATOMIC_LONG_READ_OP()
+ATOMIC_LONG_READ_OP(_acquire)
-static inline void atomic_long_set(atomic_long_t *l, long i)
-{
- ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
+#undef ATOMIC_LONG_READ_OP
- ATOMIC_LONG_PFX(_set)(v, i);
+#define ATOMIC_LONG_SET_OP(mo) \
+static inline void atomic_long_set##mo(atomic_long_t *l, long i) \
+{ \
+ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
+ \
+ ATOMIC_LONG_PFX(_set##mo)(v, i); \
+}
+ATOMIC_LONG_SET_OP()
+ATOMIC_LONG_SET_OP(_release)
+
+#undef ATOMIC_LONG_SET_OP
+
+#define ATOMIC_LONG_ADD_SUB_OP(op, mo) \
+static inline long \
+atomic_long_##op##_return##mo(long i, atomic_long_t *l) \
+{ \
+ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
+ \
+ return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \
}
+ATOMIC_LONG_ADD_SUB_OP(add,)
+ATOMIC_LONG_ADD_SUB_OP(add, _relaxed)
+ATOMIC_LONG_ADD_SUB_OP(add, _acquire)
+ATOMIC_LONG_ADD_SUB_OP(add, _release)
+ATOMIC_LONG_ADD_SUB_OP(sub,)
+ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed)
+ATOMIC_LONG_ADD_SUB_OP(sub, _acquire)
+ATOMIC_LONG_ADD_SUB_OP(sub, _release)
+
+#undef ATOMIC_LONG_ADD_SUB_OP
+
+#define atomic_long_cmpxchg_relaxed(l, old, new) \
+ (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \
+ (old), (new)))
+#define atomic_long_cmpxchg_acquire(l, old, new) \
+ (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \
+ (old), (new)))
+#define atomic_long_cmpxchg_release(l, old, new) \
+ (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \
+ (old), (new)))
+#define atomic_long_cmpxchg(l, old, new) \
+ (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
+
+#define atomic_long_xchg_relaxed(v, new) \
+ (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
+#define atomic_long_xchg_acquire(v, new) \
+ (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
+#define atomic_long_xchg_release(v, new) \
+ (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
+#define atomic_long_xchg(v, new) \
+ (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
static inline void atomic_long_inc(atomic_long_t *l)
{
@@ -104,20 +154,6 @@ static inline int atomic_long_add_negative(long i, atomic_long_t *l)
return ATOMIC_LONG_PFX(_add_negative)(i, v);
}
-static inline long atomic_long_add_return(long i, atomic_long_t *l)
-{
- ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
-
- return (long)ATOMIC_LONG_PFX(_add_return)(i, v);
-}
-
-static inline long atomic_long_sub_return(long i, atomic_long_t *l)
-{
- ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
-
- return (long)ATOMIC_LONG_PFX(_sub_return)(i, v);
-}
-
static inline long atomic_long_inc_return(atomic_long_t *l)
{
ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
@@ -141,9 +177,5 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
#define atomic_long_inc_not_zero(l) \
ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
-#define atomic_long_cmpxchg(l, old, new) \
- (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
-#define atomic_long_xchg(v, new) \
- (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
#endif /* _ASM_GENERIC_ATOMIC_LONG_H */
--
2.1.4
next prev parent reply other threads:[~2015-07-16 15:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-16 15:32 [PATCH v2 0/7] Add generic support for relaxed atomics Will Deacon
2015-07-16 15:32 ` [PATCH v2 1/7] atomics: add acquire/release/relaxed variants of some atomic operations Will Deacon
2015-07-17 0:07 ` Waiman Long
2015-07-17 9:40 ` Will Deacon
2015-07-17 17:19 ` Waiman Long
2015-07-17 17:30 ` Will Deacon
2015-07-16 15:32 ` [PATCH v2 2/7] asm-generic: rework atomic-long.h to avoid bulk code duplication Will Deacon
2015-07-16 15:32 ` Will Deacon [this message]
2015-07-16 15:32 ` [PATCH v2 4/7] lockref: remove homebrew cmpxchg64_relaxed macro definition Will Deacon
2015-07-16 16:48 ` Peter Zijlstra
2015-07-16 17:00 ` Will Deacon
2015-07-16 15:32 ` [PATCH v2 5/7] locking/qrwlock: make use of acquire/release/relaxed atomics Will Deacon
2015-07-16 16:59 ` Peter Zijlstra
2015-07-16 18:13 ` Will Deacon
2015-07-16 15:32 ` [PATCH v2 6/7] include/llist: use linux/atomic.h instead of asm/cmpxchg.h Will Deacon
2015-07-16 15:32 ` [PATCH v2 7/7] ARM: atomics: define our SMP atomics in terms of _relaxed operations Will Deacon
2015-07-16 20:40 ` Waiman Long
2015-07-16 21:08 ` Peter Zijlstra
2015-07-17 0:00 ` Waiman Long
2015-07-17 9:35 ` Will Deacon
2015-07-17 17:17 ` Waiman Long
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