089eafaff3
This setting places a (small) limit on the size of the buffer cache, constraining UFS performance on large servers. The setting comes from the initial arm64 implementation and appears to be vestigal. Remove it. Reviewed by: kib Submitted by: Klara, Inc. Sponsored by: Ampere Computing Differential Revision: https://reviews.freebsd.org/D28162
126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)param.h 5.8 (Berkeley) 6/28/91
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PARAM_H_
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#define _MACHINE_PARAM_H_
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/*
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* Machine dependent constants for arm64.
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*/
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#include <machine/_align.h>
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#define STACKALIGNBYTES (16 - 1)
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#define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES)
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#define __PCI_REROUTE_INTERRUPT
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#ifndef MACHINE
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#define MACHINE "arm64"
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#endif
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#ifndef MACHINE_ARCH
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#define MACHINE_ARCH "aarch64"
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#endif
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#ifndef MACHINE_ARCH32
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#define MACHINE_ARCH32 "armv7"
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#endif
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#ifdef SMP
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#ifndef MAXCPU
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#define MAXCPU 256
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#endif
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#else
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#define MAXCPU 1
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#endif
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#ifndef MAXMEMDOM
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#define MAXMEMDOM 8
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#endif
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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/*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*/
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#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
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/*
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* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
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* architecture. It should be used with appropriate caution.
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*/
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#define CACHE_LINE_SHIFT 7
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#define PAGE_SHIFT_4K 12
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#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
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#define PAGE_MASK_4K (PAGE_SIZE_4K - 1)
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#define PAGE_SHIFT_16K 14
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#define PAGE_SIZE_16K (1 << PAGE_SHIFT_16K)
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#define PAGE_MASK_16K (PAGE_SIZE_16K - 1)
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#define PAGE_SHIFT_64K 16
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#define PAGE_SIZE_64K (1 << PAGE_SHIFT_64K)
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#define PAGE_MASK_64K (PAGE_SIZE_64K - 1)
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#define PAGE_SHIFT PAGE_SHIFT_4K
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#define PAGE_SIZE PAGE_SIZE_4K
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#define PAGE_MASK PAGE_MASK_4K
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#define MAXPAGESIZES 3 /* maximum number of supported page sizes */
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#ifndef KSTACK_PAGES
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#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
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#endif
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#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
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#define PCPU_PAGES 1
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/*
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* Mach derived conversion macros
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*/
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#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK)
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#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define arm64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define arm64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
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#endif /* !_MACHINE_PARAM_H_ */
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