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Diffstat (limited to '')
| -rw-r--r-- | arch/s390/include/asm/atomic.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h new file mode 100644 index 000000000..7138d189c --- /dev/null +++ b/arch/s390/include/asm/atomic.h @@ -0,0 +1,150 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright IBM Corp. 1999, 2016 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Denis Joseph Barrow, + * Arnd Bergmann, + */ + +#ifndef __ARCH_S390_ATOMIC__ +#define __ARCH_S390_ATOMIC__ + +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm/atomic_ops.h> +#include <asm/barrier.h> +#include <asm/cmpxchg.h> + +static inline int arch_atomic_read(const atomic_t *v) +{ + return __atomic_read(v); +} +#define arch_atomic_read arch_atomic_read + +static inline void arch_atomic_set(atomic_t *v, int i) +{ + __atomic_set(v, i); +} +#define arch_atomic_set arch_atomic_set + +static inline int arch_atomic_add_return(int i, atomic_t *v) +{ + return __atomic_add_barrier(i, &v->counter) + i; +} +#define arch_atomic_add_return arch_atomic_add_return + +static inline int arch_atomic_fetch_add(int i, atomic_t *v) +{ + return __atomic_add_barrier(i, &v->counter); +} +#define arch_atomic_fetch_add arch_atomic_fetch_add + +static inline void arch_atomic_add(int i, atomic_t *v) +{ + __atomic_add(i, &v->counter); +} +#define arch_atomic_add arch_atomic_add + +#define arch_atomic_sub(_i, _v) arch_atomic_add(-(int)(_i), _v) +#define arch_atomic_sub_return(_i, _v) arch_atomic_add_return(-(int)(_i), _v) +#define arch_atomic_fetch_sub(_i, _v) arch_atomic_fetch_add(-(int)(_i), _v) + +#define ATOMIC_OPS(op) \ +static inline void arch_atomic_##op(int i, atomic_t *v) \ +{ \ + __atomic_##op(i, &v->counter); \ +} \ +static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ +{ \ + return __atomic_##op##_barrier(i, &v->counter); \ +} + +ATOMIC_OPS(and) +ATOMIC_OPS(or) +ATOMIC_OPS(xor) + +#undef ATOMIC_OPS + +#define arch_atomic_and arch_atomic_and +#define arch_atomic_or arch_atomic_or +#define arch_atomic_xor arch_atomic_xor +#define arch_atomic_fetch_and arch_atomic_fetch_and +#define arch_atomic_fetch_or arch_atomic_fetch_or +#define arch_atomic_fetch_xor arch_atomic_fetch_xor + +#define arch_atomic_xchg(v, new) (arch_xchg(&((v)->counter), new)) + +static inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new) +{ + return __atomic_cmpxchg(&v->counter, old, new); +} +#define arch_atomic_cmpxchg arch_atomic_cmpxchg + +#define ATOMIC64_INIT(i) { (i) } + +static inline s64 arch_atomic64_read(const atomic64_t *v) +{ + return __atomic64_read(v); +} +#define arch_atomic64_read arch_atomic64_read + +static inline void arch_atomic64_set(atomic64_t *v, s64 i) +{ + __atomic64_set(v, i); +} +#define arch_atomic64_set arch_atomic64_set + +static inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v) +{ + return __atomic64_add_barrier(i, (long *)&v->counter) + i; +} +#define arch_atomic64_add_return arch_atomic64_add_return + +static inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v) +{ + return __atomic64_add_barrier(i, (long *)&v->counter); +} +#define arch_atomic64_fetch_add arch_atomic64_fetch_add + +static inline void arch_atomic64_add(s64 i, atomic64_t *v) +{ + __atomic64_add(i, (long *)&v->counter); +} +#define arch_atomic64_add arch_atomic64_add + +#define arch_atomic64_xchg(v, new) (arch_xchg(&((v)->counter), new)) + +static inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) +{ + return __atomic64_cmpxchg((long *)&v->counter, old, new); +} +#define arch_atomic64_cmpxchg arch_atomic64_cmpxchg + +#define ATOMIC64_OPS(op) \ +static inline void arch_atomic64_##op(s64 i, atomic64_t *v) \ +{ \ + __atomic64_##op(i, (long *)&v->counter); \ +} \ +static inline long arch_atomic64_fetch_##op(s64 i, atomic64_t *v) \ +{ \ + return __atomic64_##op##_barrier(i, (long *)&v->counter); \ +} + +ATOMIC64_OPS(and) +ATOMIC64_OPS(or) +ATOMIC64_OPS(xor) + +#undef ATOMIC64_OPS + +#define arch_atomic64_and arch_atomic64_and +#define arch_atomic64_or arch_atomic64_or +#define arch_atomic64_xor arch_atomic64_xor +#define arch_atomic64_fetch_and arch_atomic64_fetch_and +#define arch_atomic64_fetch_or arch_atomic64_fetch_or +#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor + +#define arch_atomic64_sub_return(_i, _v) arch_atomic64_add_return(-(s64)(_i), _v) +#define arch_atomic64_fetch_sub(_i, _v) arch_atomic64_fetch_add(-(s64)(_i), _v) +#define arch_atomic64_sub(_i, _v) arch_atomic64_add(-(s64)(_i), _v) + +#endif /* __ARCH_S390_ATOMIC__ */ |