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006e9a4088
Move platform specific Linux headers under include/os/linux/. Update the build system accordingly to detect the platform. This lays some of the initial groundwork to supporting building for other platforms. As part of this change it was necessary to create both a user and kernel space sys/simd.h header which can be included in either context. No functional change, the source has been refactored and the relevant #include's updated. Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Igor Kozhukhov <igor@dilos.org> Signed-off-by: Matthew Macy <mmacy@FreeBSD.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #9198
80 lines
3.3 KiB
C
80 lines
3.3 KiB
C
/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SPL_ATOMIC_H
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#define _SPL_ATOMIC_H
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <sys/types.h>
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/*
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* Map the atomic_* functions to the Linux counterparts. This relies on the
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* fact that the atomic types are internally really a uint32 or uint64. If
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* this were to change an alternate approach would be needed.
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*
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* N.B. Due to the limitations of the original API atomicity is not strictly
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* preserved when using the 64-bit functions on a 32-bit system. In order
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* to support this all consumers would need to be updated to use the Linux
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* provided atomic_t and atomic64_t types.
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*/
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#define atomic_inc_32(v) atomic_inc((atomic_t *)(v))
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#define atomic_dec_32(v) atomic_dec((atomic_t *)(v))
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#define atomic_add_32(v, i) atomic_add((i), (atomic_t *)(v))
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#define atomic_sub_32(v, i) atomic_sub((i), (atomic_t *)(v))
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#define atomic_inc_32_nv(v) atomic_inc_return((atomic_t *)(v))
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#define atomic_dec_32_nv(v) atomic_dec_return((atomic_t *)(v))
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#define atomic_add_32_nv(v, i) atomic_add_return((i), (atomic_t *)(v))
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#define atomic_sub_32_nv(v, i) atomic_sub_return((i), (atomic_t *)(v))
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#define atomic_cas_32(v, x, y) atomic_cmpxchg((atomic_t *)(v), x, y)
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#define atomic_swap_32(v, x) atomic_xchg((atomic_t *)(v), x)
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#define atomic_inc_64(v) atomic64_inc((atomic64_t *)(v))
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#define atomic_dec_64(v) atomic64_dec((atomic64_t *)(v))
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#define atomic_add_64(v, i) atomic64_add((i), (atomic64_t *)(v))
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#define atomic_sub_64(v, i) atomic64_sub((i), (atomic64_t *)(v))
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#define atomic_inc_64_nv(v) atomic64_inc_return((atomic64_t *)(v))
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#define atomic_dec_64_nv(v) atomic64_dec_return((atomic64_t *)(v))
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#define atomic_add_64_nv(v, i) atomic64_add_return((i), (atomic64_t *)(v))
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#define atomic_sub_64_nv(v, i) atomic64_sub_return((i), (atomic64_t *)(v))
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#define atomic_cas_64(v, x, y) atomic64_cmpxchg((atomic64_t *)(v), x, y)
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#define atomic_swap_64(v, x) atomic64_xchg((atomic64_t *)(v), x)
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#ifdef _LP64
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static __inline__ void *
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atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
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{
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return ((void *)atomic_cas_64((volatile uint64_t *)target,
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(uint64_t)cmp, (uint64_t)newval));
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}
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#else /* _LP64 */
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static __inline__ void *
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atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
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{
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return ((void *)atomic_cas_32((volatile uint32_t *)target,
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(uint32_t)cmp, (uint32_t)newval));
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}
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#endif /* _LP64 */
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#endif /* _SPL_ATOMIC_H */
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