Commit-ID: 125897908c718972351b589da89b7f990892d4df
Gitweb: http://git.kernel.org/tip/125897908c718972351b589da89b7f990892d4df
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Wed, 23 Apr 2014 20:04:39 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 27 Jul 2015 14:06:21 +0200
arm: Provide atomic_{or,xor,and}
Implement atomic logic ops -- atomic_{or,xor,and}.
These will replace the atomic_{set,clear}_mask functions that are
available on some archs.
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/arm/include/asm/atomic.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index e22c119..ff214ba 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -194,6 +194,14 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
ATOMIC_OPS(add, +=, add)
ATOMIC_OPS(sub, -=, sub)
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+#define atomic_andnot atomic_andnot
+
+ATOMIC_OP(and, &=, and)
+ATOMIC_OP(andnot, &= ~, bic)
+ATOMIC_OP(or, |=, orr)
+ATOMIC_OP(xor, ^=, eor)
+
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
@@ -321,6 +329,13 @@ static inline long long atomic64_##op##_return(long long i, atomic64_t *v) \
ATOMIC64_OPS(add, adds, adc)
ATOMIC64_OPS(sub, subs, sbc)
+#define atomic64_andnot atomic64_andnot
+
+ATOMIC64_OP(and, and, and)
+ATOMIC64_OP(andnot, bic, bic)
+ATOMIC64_OP(or, orr, orr)
+ATOMIC64_OP(xor, eor, eor)
+
#undef ATOMIC64_OPS
#undef ATOMIC64_OP_RETURN
#undef ATOMIC64_OP
--
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