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authorWill Deacon <will.deacon@arm.com>2015-08-06 17:54:39 +0100
committerIngo Molnar <mingo@kernel.org>2015-08-12 11:59:01 +0200
commit6d79ef2d30ee5af7315535d1e7bf6fce0008f815 (patch)
tree96d9d61d76b5ff3036c1ac4a393363e66c08bdf9 /include
parent586b610e43a5ad5096640312fefa6ce931738c7d (diff)
locking, asm-generic: Add _{relaxed|acquire|release}() variants for 'atomic_long_t'
This patch adds 'atomic_long_t' wrappers for the new relaxed atomic operations. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman.Long@hp.com Cc: paulmck@linux.vnet.ibm.com Link: http://lkml.kernel.org/r/1438880084-18856-4-git-send-email-will.deacon@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/atomic-long.h86
1 files 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 */

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