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138 lines
3.0 KiB
138 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright IBM Corp. 1999, 2016 |
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* Author(s): Martin Schwidefsky <[email protected]>, |
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* Denis Joseph Barrow, |
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* Arnd Bergmann, |
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*/ |
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#ifndef __ARCH_S390_ATOMIC__ |
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#define __ARCH_S390_ATOMIC__ |
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#include <linux/compiler.h> |
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#include <linux/types.h> |
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#include <asm/atomic_ops.h> |
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#include <asm/barrier.h> |
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#include <asm/cmpxchg.h> |
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static inline int atomic_read(const atomic_t *v) |
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{ |
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int c; |
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asm volatile( |
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" l %0,%1\n" |
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: "=d" (c) : "Q" (v->counter)); |
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return c; |
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} |
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static inline void atomic_set(atomic_t *v, int i) |
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{ |
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asm volatile( |
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" st %1,%0\n" |
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: "=Q" (v->counter) : "d" (i)); |
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} |
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static inline int atomic_add_return(int i, atomic_t *v) |
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{ |
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return __atomic_add_barrier(i, &v->counter) + i; |
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} |
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static inline int atomic_fetch_add(int i, atomic_t *v) |
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{ |
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return __atomic_add_barrier(i, &v->counter); |
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} |
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static inline void atomic_add(int i, atomic_t *v) |
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{ |
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__atomic_add(i, &v->counter); |
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} |
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#define atomic_sub(_i, _v) atomic_add(-(int)(_i), _v) |
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#define atomic_sub_return(_i, _v) atomic_add_return(-(int)(_i), _v) |
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#define atomic_fetch_sub(_i, _v) atomic_fetch_add(-(int)(_i), _v) |
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#define ATOMIC_OPS(op) \ |
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static inline void atomic_##op(int i, atomic_t *v) \ |
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{ \ |
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__atomic_##op(i, &v->counter); \ |
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} \ |
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static inline int atomic_fetch_##op(int i, atomic_t *v) \ |
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{ \ |
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return __atomic_##op##_barrier(i, &v->counter); \ |
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} |
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ATOMIC_OPS(and) |
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ATOMIC_OPS(or) |
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ATOMIC_OPS(xor) |
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#undef ATOMIC_OPS |
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#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) |
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static inline int atomic_cmpxchg(atomic_t *v, int old, int new) |
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{ |
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return __atomic_cmpxchg(&v->counter, old, new); |
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} |
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#define ATOMIC64_INIT(i) { (i) } |
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static inline s64 atomic64_read(const atomic64_t *v) |
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{ |
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s64 c; |
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asm volatile( |
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" lg %0,%1\n" |
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: "=d" (c) : "Q" (v->counter)); |
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return c; |
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} |
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static inline void atomic64_set(atomic64_t *v, s64 i) |
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{ |
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asm volatile( |
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" stg %1,%0\n" |
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: "=Q" (v->counter) : "d" (i)); |
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} |
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static inline s64 atomic64_add_return(s64 i, atomic64_t *v) |
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{ |
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return __atomic64_add_barrier(i, (long *)&v->counter) + i; |
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} |
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static inline s64 atomic64_fetch_add(s64 i, atomic64_t *v) |
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{ |
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return __atomic64_add_barrier(i, (long *)&v->counter); |
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} |
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static inline void atomic64_add(s64 i, atomic64_t *v) |
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{ |
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__atomic64_add(i, (long *)&v->counter); |
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} |
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#define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) |
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static inline s64 atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) |
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{ |
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return __atomic64_cmpxchg((long *)&v->counter, old, new); |
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} |
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#define ATOMIC64_OPS(op) \ |
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static inline void atomic64_##op(s64 i, atomic64_t *v) \ |
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{ \ |
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__atomic64_##op(i, (long *)&v->counter); \ |
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} \ |
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static inline long atomic64_fetch_##op(s64 i, atomic64_t *v) \ |
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{ \ |
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return __atomic64_##op##_barrier(i, (long *)&v->counter); \ |
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} |
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ATOMIC64_OPS(and) |
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ATOMIC64_OPS(or) |
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ATOMIC64_OPS(xor) |
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#undef ATOMIC64_OPS |
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#define atomic64_sub_return(_i, _v) atomic64_add_return(-(s64)(_i), _v) |
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#define atomic64_fetch_sub(_i, _v) atomic64_fetch_add(-(s64)(_i), _v) |
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#define atomic64_sub(_i, _v) atomic64_add(-(s64)(_i), _v) |
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#endif /* __ARCH_S390_ATOMIC__ */
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