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/* SPDX-License-Identifier: GPL-2.0 */ /* atomic.h: These still suck, but the I-cache hit rate is higher. * * Copyright (C) 1996 David S. Miller (davem@davemloft.net) * Copyright (C) 2000 Anton Blanchard (anton@linuxcare.com.au) * Copyright (C) 2007 Kyle McMartin (kyle@parisc-linux.org) * * Additions by Keith M Wesolowski (wesolows@foobazco.org) based * on asm-parisc/atomic.h Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>. */ #ifndef __ARCH_SPARC_ATOMIC__ #define __ARCH_SPARC_ATOMIC__ #include <linux/types.h> #include <asm/cmpxchg.h> #include <asm/barrier.h> #include <asm-generic/atomic64.h> int arch_atomic_add_return(int, atomic_t *); int arch_atomic_fetch_add(int, atomic_t *); int arch_atomic_fetch_and(int, atomic_t *); int arch_atomic_fetch_or(int, atomic_t *); int arch_atomic_fetch_xor(int, atomic_t *); int arch_atomic_cmpxchg(atomic_t *, int, int); int arch_atomic_xchg(atomic_t *, int); int arch_atomic_fetch_add_unless(atomic_t *, int, int); void arch_atomic_set(atomic_t *, int); #define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless #define arch_atomic_set_release(v, i) arch_atomic_set((v), (i)) #define arch_atomic_read(v) READ_ONCE((v)->counter) #define arch_atomic_add(i, v) ((void)arch_atomic_add_return( (int)(i), (v))) #define arch_atomic_sub(i, v) ((void)arch_atomic_add_return(-(int)(i), (v))) #define arch_atomic_and(i, v) ((void)arch_atomic_fetch_and((i), (v))) #define arch_atomic_or(i, v) ((void)arch_atomic_fetch_or((i), (v))) #define arch_atomic_xor(i, v) ((void)arch_atomic_fetch_xor((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))) #endif /* !(__ARCH_SPARC_ATOMIC__) */