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sys/compat/linuxkpi/common/include/linux/page-flags.h
- This file was copied from sys/compat/linuxkpi/common/include/linux/smp.h.
| /*- | /*- | ||||
| * Copyright (c) 2017 Mark Johnston <markj@FreeBSD.org> | * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | ||||
| * | * | ||||
| * Copyright (c) 2010 Isilon Systems, Inc. | |||||
| * Copyright (c) 2016 Matthew Macy (mmacy@mattmacy.io) | |||||
| * Copyright (c) 2017 Mellanox Technologies, Ltd. | |||||
| * Copyright (c) 2021 Vladimir Kondratyev <wulf@FreeBSD.org> | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | * Redistribution and use in source and binary forms, with or without | ||||
| * modification, are permitted provided that the following conditions are | * modification, are permitted provided that the following conditions are | ||||
| * met: | * met: | ||||
| * 1. Redistributions of source code must retain the above copyright | * 1. Redistributions of source code must retain the above copyright | ||||
| * notice, this list of conditions and the following disclaimer. | * notice, this list of conditions and the following disclaimer. | ||||
| * 2. Redistributions in binary form must reproduce the above copyright | * 2. Redistributions in binary form must reproduce the above copyright | ||||
| * notice, this list of conditions and the following disclaimer in | * notice, this list of conditions and the following disclaimer in | ||||
| * the documentation and/or other materials provided with the | * the documentation and/or other materials provided with the | ||||
| * distribution. | * distribution. | ||||
| * | * | ||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | ||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | ||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | * 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 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
| * SUCH DAMAGE. | * SUCH DAMAGE. | ||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | */ | ||||
| #ifndef _LINUXKPI_LINUX_SMP_H_ | #ifndef _LINUXKPI_LINUX_PAGEFLAGS_H_ | ||||
| #define _LINUXKPI_LINUX_SMP_H_ | #define _LINUXKPI_LINUX_PAGEFLAGS_H_ | ||||
| /* | #define PageHighMem(p) (0) | ||||
| * Important note about the use of the function provided below: | |||||
| * | |||||
| * The callback function passed to on_each_cpu() is called from a | |||||
| * so-called critical section, and if you need a mutex you will have | |||||
| * to rewrite the code to use native FreeBSD mtx spinlocks instead of | |||||
| * the spinlocks provided by the LinuxKPI! Be very careful to not call | |||||
| * any LinuxKPI functions inside the on_each_cpu()'s callback | |||||
| * function, because they may sleep, unlike in native Linux. | |||||
| * | |||||
| * Enabling witness(4) when testing, can catch such issues. | |||||
| */ | |||||
| #define on_each_cpu(cb, data, wait) ({ \ | |||||
| CTASSERT(wait); \ | |||||
| linux_on_each_cpu(cb, data); \ | |||||
| }) | |||||
| extern int linux_on_each_cpu(void (*)(void *), void *); | #endif /* _LINUXKPI_LINUX_PAGEFLAGS_H_ */ | ||||
| #endif /* _LINUXKPI_LINUX_SMP_H_ */ | |||||