edc8222303
initial thread stack is not adjusted by the tunable, the stack is allocated too early to get access to the kernel environment. See TD0_KSTACK_PAGES for the thread0 stack sizing on i386. The tunable was tested on x86 only. From the visual inspection, it seems that it might work on arm and powerpc. The arm USPACE_SVC_STACK_TOP and powerpc USPACE macros seems to be already incorrect for the threads with non-default kstack size. I only changed the macros to use variable instead of constant, since I cannot test. On arm64, mips and sparc64, some static data structures are sized by KSTACK_PAGES, so the tunable is disabled. Sponsored by: The FreeBSD Foundation MFC after: 2 week
157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
/*-
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* Copyright (c) 2001 David E. O'Brien
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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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 _ARM_INCLUDE_PARAM_H_
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#define _ARM_INCLUDE_PARAM_H_
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/*
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* Machine dependent constants for StrongARM
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*/
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#include <machine/_align.h>
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#include <machine/acle-compat.h>
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#define STACKALIGNBYTES (8 - 1)
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#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES)
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#define __PCI_REROUTE_INTERRUPT
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#if __ARM_ARCH >= 6
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#define _V6_SUFFIX "v6"
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#else
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#define _V6_SUFFIX ""
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#endif
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#ifdef __ARM_PCS_VFP
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#define _HF_SUFFIX "hf"
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#else
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#define _HF_SUFFIX ""
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#endif
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#ifdef __ARM_BIG_ENDIAN
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#define _EB_SUFFIX "eb"
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#else
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#define _EB_SUFFIX ""
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#endif
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#ifndef MACHINE
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#define MACHINE "arm"
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#endif
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#ifndef MACHINE_ARCH
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#define MACHINE_ARCH "arm" _V6_SUFFIX _HF_SUFFIX _EB_SUFFIX
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#endif
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#if defined(SMP) || defined(KLD_MODULE)
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#ifndef MAXCPU
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#define MAXCPU 4
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#endif
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#else
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#define MAXCPU 1
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#endif /* SMP || KLD_MODULE */
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#ifndef MAXMEMDOM
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#define MAXMEMDOM 1
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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) ((((unsigned)(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 6
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
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#define PAGE_MASK (PAGE_SIZE - 1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define PDR_SHIFT 20 /* log2(NBPDR) */
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#define NBPDR (1 << PDR_SHIFT)
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#define PDRMASK (NBPDR - 1)
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#define NPDEPG (1 << (32 - PDR_SHIFT))
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#define MAXPAGESIZES 2 /* maximum number of supported page sizes */
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#ifndef KSTACK_PAGES
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#define KSTACK_PAGES 2
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#endif /* !KSTACK_PAGES */
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#ifndef FPCONTEXTSIZE
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#define FPCONTEXTSIZE (0x100)
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#endif
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#ifndef KSTACK_GUARD_PAGES
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#define KSTACK_GUARD_PAGES 1
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#endif /* !KSTACK_GUARD_PAGES */
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#define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE)
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/*
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* Mach derived conversion macros
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*/
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#define trunc_page(x) ((x) & ~PAGE_MASK)
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#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK)
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#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
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#define atop(x) ((unsigned)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT)
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#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
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#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
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#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
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#ifdef _KERNEL
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#define NO_FUEWORD 1
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#endif
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#endif /* !_ARM_INCLUDE_PARAM_H_ */
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