100 lines
3.8 KiB
C
100 lines
3.8 KiB
C
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/*
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* Copyright (c) 2016-2021 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _SKYWALK_MEM_SKMEMVAR_H
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#define _SKYWALK_MEM_SKMEMVAR_H
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#ifdef BSD_KERNEL_PRIVATE
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#include <skywalk/mem/skmem_region_var.h>
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#include <skywalk/mem/skmem_cache_var.h>
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#include <skywalk/mem/skmem_arena_var.h>
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#if defined(__arm64__)
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#define SKMEM_PAGE_SIZE PAGE_MAX_SIZE
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#else /* __i386__, __x86_64__ */
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#define SKMEM_PAGE_SIZE PAGE_SIZE
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#endif /* __i386__, __x86_64__ */
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/*
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* Initial segment sizes for non-monolithic regions. Smaller size allows more
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* finer-grained control over the memory, at the expense of overheads. The
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* effective region segment size is computed by skmem_region_params_config(),
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* depending on the number and size of objects. This may be overridden by
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* the "skmem_seg_size" and "skmem_buf_seg_size" boot-arg.
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*
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* The sizes are always multiples of SKMEM_PAGE_SIZE.
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*/
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#define SKMEM_MIN_SEG_SIZE (16 * 1024)
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#define SKMEM_SEG_SIZE SKMEM_MIN_SEG_SIZE /* default for all */
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#define SKMEM_MD_SEG_SIZE (16 * 1024) /* default for metadata */
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#define SKMEM_DRV_BUF_SEG_SIZE (64 * 1024) /* default for device buffer */
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#define SKMEM_USR_BUF_SEG_SIZE (16 * 1024) /* default for user buffer */
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#define SKMEM_DRV_BUF_SEG_MULTIPLIER 2
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#define SKMEM_ARENA_PREFIX "ska"
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#define SKMEM_REGION_PREFIX "skr"
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#define SKMEM_CACHE_PREFIX "skc"
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#define SKMEM_ZONE_PREFIX "skywalk"
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#if DEBUG || DEVELOPMENT
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#define SMKEM_KT_DEFAULT KT_PRIV_ACCT
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#else
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#define SMKEM_KT_DEFAULT KT_DEFAULT
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#endif
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#define SKMEM_TYPE_DEFINE(var, type) \
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KALLOC_TYPE_DEFINE(var, type, SMKEM_KT_DEFAULT)
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extern lck_attr_t skmem_lock_attr;
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extern lck_grp_t skmem_lock_grp;
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extern uint32_t skmem_usr_buf_seg_size;
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#if (DEVELOPMENT || DEBUG)
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SYSCTL_DECL(_kern_skywalk_mem);
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#endif /* (DEVELOPMENT || DEBUG) */
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#define SKMEM_MEM_CONSTRAINED_DEVICE() \
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(max_mem_actual <= (2ULL * 1024ULL * 1024ULL * 1024ULL))
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__BEGIN_DECLS
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extern void skmem_init(void);
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extern void skmem_fini(void);
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extern const struct skmem_region_params *skmem_get_default(skmem_region_id_t);
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extern uint32_t skmem_cpu_cache_line_size(void);
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extern void skmem_dispatch(thread_call_t, void (*func)(void), uint64_t);
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extern struct skmem_region *skmem_get_sysctls_region(void);
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extern char *skmem_dump(struct skmem_region *);
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extern boolean_t skmem_lowmem_check(void);
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#if (DEVELOPMENT || DEBUG)
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extern void skmem_test_init(void);
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extern void skmem_test_fini(void);
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extern bool skmem_test_enabled(void);
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#endif /* (DEVELOPMENT || DEBUG) */
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__END_DECLS
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#endif /* BSD_KERNEL_PRIVATE */
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#endif /* _SKYWALK_MEM_SKMEMVAR_H */
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