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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-03 16:10:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-03 16:10:43 -0800
commitd63a9788650fcd999b34584316afee6bd4378f19 (patch)
tree32135409a61fab9365621ad01adb58a8dc7c536d /arch/avr32
parent281422869942c19f05a08d4017c633d08d390938 (diff)
parent6e490b0106a2118ee4c37c37847454a5c2dc6e32 (diff)
downloadlinux-d63a9788650fcd999b34584316afee6bd4378f19.tar.gz
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking changes from Ingo Molnar: "The main changes in this cycle were: - More gradual enhancements to atomic ops: new atomic*_read_ctrl() ops, synchronize atomic_{read,set}() ordering requirements between architectures, add atomic_long_t bitops. (Peter Zijlstra) - Add _{relaxed|acquire|release}() variants for inc/dec atomics and use them in various locking primitives: mutex, rtmutex, mcs, rwsem. This enables weakly ordered architectures (such as arm64) to make use of more locking related optimizations. (Davidlohr Bueso) - Implement atomic[64]_{inc,dec}_relaxed() on ARM. (Will Deacon) - Futex kernel data cache footprint micro-optimization. (Rasmus Villemoes) - pvqspinlock runtime overhead micro-optimization. (Waiman Long) - misc smaller fixlets" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ARM, locking/atomics: Implement _relaxed variants of atomic[64]_{inc,dec} locking/rwsem: Use acquire/release semantics locking/mcs: Use acquire/release semantics locking/rtmutex: Use acquire/release semantics locking/mutex: Use acquire/release semantics locking/asm-generic: Add _{relaxed|acquire|release}() variants for inc/dec atomics atomic: Implement atomic_read_ctrl() atomic, arch: Audit atomic_{read,set}() atomic: Add atomic_long_t bitops futex: Force hot variables into a single cache line locking/pvqspinlock: Kick the PV CPU unconditionally when _Q_SLOW_VAL locking/osq: Relax atomic semantics locking/qrwlock: Rename ->lock to ->wait_lock locking/Documentation/lockstat: Fix typo - lokcing -> locking locking/atomics, cmpxchg: Privatize the inclusion of asm/cmpxchg.h
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/include/asm/atomic.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/avr32/include/asm/atomic.h b/arch/avr32/include/asm/atomic.h
index 97c9bdf83409..d74fd8ce980a 100644
--- a/arch/avr32/include/asm/atomic.h
+++ b/arch/avr32/include/asm/atomic.h
@@ -19,8 +19,8 @@
#define ATOMIC_INIT(i) { (i) }
-#define atomic_read(v) ACCESS_ONCE((v)->counter)
-#define atomic_set(v, i) (((v)->counter) = i)
+#define atomic_read(v) READ_ONCE((v)->counter)
+#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
#define ATOMIC_OP_RETURN(op, asm_op, asm_con) \
static inline int __atomic_##op##_return(int i, atomic_t *v) \