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sys/riscv/include/pcpu_aux.h
- This file was added.
/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
* | |||||
* Copyright (c) 2019 The FreeBSD Foundation | |||||
* | |||||
* This software was developed by Konstantin Belousov <kib@FreeBSD.org> | |||||
* under sponsorship from the FreeBSD Foundation. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
* | |||||
* $FreeBSD$ | |||||
*/ | |||||
#ifndef _MACHINE_PCPU_AUX_H_ | |||||
#define _MACHINE_PCPU_AUX_H_ | |||||
#ifndef _KERNEL | |||||
#error "Not for userspace" | |||||
#endif | |||||
#ifndef _SYS_PCPU_H_ | |||||
#error "Do not include machine/pcpu_aux.h directly" | |||||
#endif | |||||
/* | |||||
* To minimize memory waste in per-cpu UMA zones, the page size should | |||||
* be a multiple of the size of struct pcpu. | |||||
*/ | |||||
markj: "... zones, the page size should be a multiple of the size of struct pcpu." | |||||
_Static_assert(PAGE_SIZE % sizeof(struct pcpu) == 0, "fix pcpu size"); | |||||
extern struct pcpu __pcpu[]; | |||||
Done Inline ActionsThis could be written more simply as PAGE_SIZE % sizeof(struct pcpu) == 0. markj: This could be written more simply as PAGE_SIZE % sizeof(struct pcpu) == 0. | |||||
#endif /* _MACHINE_PCPU_AUX_H_ */ |
"... zones, the page size should be a multiple of the size of struct pcpu."