| 1 | /* $Id: the-linux-kernel.h 100354 2023-07-04 06:32:00Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Include all necessary headers for the Linux kernel.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 | #ifndef IPRT_INCLUDED_SRC_r0drv_linux_the_linux_kernel_h
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| 38 | #define IPRT_INCLUDED_SRC_r0drv_linux_the_linux_kernel_h
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| 39 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 40 | # pragma once
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| 41 | #endif
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| 42 |
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| 43 | /*
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| 44 | * Include iprt/types.h to install the bool wrappers.
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| 45 | * Then use the linux bool type for all the stuff include here.
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| 46 | */
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| 47 | #include <iprt/types.h>
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| 48 | #define bool linux_bool
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| 49 |
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| 50 | #if RT_GNUC_PREREQ(4, 6)
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| 51 | # pragma GCC diagnostic push
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| 52 | #endif
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| 53 | #if RT_GNUC_PREREQ(4, 2)
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| 54 | # pragma GCC diagnostic ignored "-Wunused-parameter"
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| 55 | # if !defined(__cplusplus) && RT_GNUC_PREREQ(4, 3)
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| 56 | # pragma GCC diagnostic ignored "-Wold-style-declaration" /* 2.6.18-411.0.0.0.1.el5/build/include/asm/apic.h:110: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration] */
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| 57 | # endif
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| 58 | #endif
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| 59 |
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| 60 |
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| 61 | #include <iprt/linux/version.h>
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| 62 | #if RTLNX_VER_MIN(2,6,33)
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| 63 | # include <generated/autoconf.h>
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| 64 | #else
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| 65 | # ifndef AUTOCONF_INCLUDED
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| 66 | # include <linux/autoconf.h>
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| 67 | # endif
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| 68 | #endif
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| 69 |
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| 70 | /* We only support 2.4 and 2.6 series kernels */
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| 71 | #if RTLNX_VER_MAX(2,4,0)
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| 72 | # error Sorry, we do not support 2.3 and earlier kernels.
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| 73 | #endif
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| 74 | #if RTLNX_VER_MIN(2,5,0) && RTLNX_VER_MAX(2,6,0)
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| 75 | # error Sorry, we do not support 2.5 series kernels (might work though).
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| 76 | #endif
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| 77 |
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| 78 | #if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
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| 79 | # define MODVERSIONS
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| 80 | # if RTLNX_VER_MAX(2,5,71)
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| 81 | # include <linux/modversions.h>
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| 82 | # endif
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| 83 | #endif
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| 84 | #ifndef KBUILD_STR
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| 85 | # if RTLNX_VER_MAX(2,6,16)
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| 86 | # define KBUILD_STR(s) s
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| 87 | # else
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| 88 | # define KBUILD_STR(s) #s
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| 89 | # endif
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| 90 | #endif
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| 91 | # if RTLNX_VER_MIN(3,3,0)
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| 92 | # include <linux/kconfig.h> /* for macro IS_ENABLED */
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| 93 | # endif
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| 94 | #include <linux/string.h>
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| 95 | #include <linux/spinlock.h>
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| 96 | #include <linux/slab.h>
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| 97 | #if RTLNX_VER_MIN(2,6,27)
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| 98 | # include <linux/semaphore.h>
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| 99 | #else /* older kernels */
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| 100 | # include <asm/semaphore.h>
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| 101 | #endif /* older kernels */
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| 102 | #include <linux/module.h>
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| 103 | #if RTLNX_VER_MIN(2,6,0)
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| 104 | # include <linux/moduleparam.h>
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| 105 | #endif
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| 106 | #include <linux/kernel.h>
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| 107 | #include <linux/init.h>
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| 108 | #include <linux/fs.h>
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| 109 | #if RTLNX_VER_MIN(2,6,0)
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| 110 | # include <linux/namei.h>
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| 111 | #endif
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| 112 | #include <linux/mm.h>
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| 113 | #include <linux/pagemap.h>
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| 114 | #include <linux/slab.h>
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| 115 | #include <linux/time.h>
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| 116 | #include <linux/sched.h>
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| 117 |
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| 118 | #if RTLNX_VER_RANGE(3,9,23, 3,9,31)
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| 119 | # include <linux/splice.h>
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| 120 | #endif
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| 121 |
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| 122 | #if RTLNX_VER_MIN(3,9,0)
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| 123 | # include <linux/sched/rt.h>
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| 124 | #endif
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| 125 | #if RTLNX_VER_MIN(4,11,0)
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| 126 | # include <linux/sched/signal.h>
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| 127 | # include <linux/sched/types.h>
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| 128 | #endif
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| 129 | #if RTLNX_VER_MIN(2,6,7)
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| 130 | # include <linux/jiffies.h>
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| 131 | #endif
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| 132 | #if RTLNX_VER_MIN(2,6,16)
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| 133 | # include <linux/ktime.h>
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| 134 | # include <linux/hrtimer.h>
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| 135 | #endif
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| 136 | #include <linux/wait.h>
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| 137 | #if RTLNX_VER_MIN(2,5,71)
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| 138 | # include <linux/cpu.h>
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| 139 | # include <linux/notifier.h>
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| 140 | #endif
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| 141 | #if RTLNX_VER_MIN(5,1,0)
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| 142 | # include <uapi/linux/mman.h>
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| 143 | #endif
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| 144 | /* For the basic additions module */
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| 145 | #include <linux/pci.h>
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| 146 | #include <linux/delay.h>
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| 147 | #include <linux/interrupt.h>
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| 148 | #include <linux/completion.h>
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| 149 | #include <linux/compiler.h>
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| 150 | #if RTLNX_VER_MIN(5,9,0) || RTLNX_SUSE_MAJ_PREREQ(15,3) /* linux/fs.h defined HAVE_UNLOCKED_IOCTL from 2.6.11 up to 5.9 (also 5.3.18-56 in SLES15-SP3), when it became an implicit assumption. */
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| 151 | # define HAVE_UNLOCKED_IOCTL 1 /* We use this in a couple of places, so for now just define it for 5.9+ too. */
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| 152 | #endif
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| 153 | #if !defined(HAVE_UNLOCKED_IOCTL) && RTLNX_VER_MAX(2,6,38)
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| 154 | # include <linux/smp_lock.h>
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| 155 | #endif
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| 156 | /* For the shared folders module */
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| 157 | #include <linux/vmalloc.h>
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| 158 | #define wchar_t linux_wchar_t
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| 159 | #include <linux/nls.h>
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| 160 | #undef wchar_t
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| 161 | #include <asm/mman.h>
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| 162 | #include <asm/io.h>
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| 163 | #include <asm/uaccess.h>
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| 164 | #include <asm/div64.h>
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| 165 |
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| 166 | /* For thread-context hooks. */
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| 167 | #if RTLNX_VER_MIN(2,6,18) && defined(CONFIG_PREEMPT_NOTIFIERS)
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| 168 | # include <linux/preempt.h>
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| 169 | #endif
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| 170 |
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| 171 | /* for workqueue / task queues. */
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| 172 | #if RTLNX_VER_MIN(2,5,41)
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| 173 | # include <linux/workqueue.h>
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| 174 | #else
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| 175 | # include <linux/tqueue.h>
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| 176 | #endif
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| 177 |
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| 178 | #if RTLNX_VER_MIN(2,6,4)
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| 179 | # include <linux/kthread.h>
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| 180 | #endif
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| 181 |
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| 182 | /* for cr4_init_shadow() / cpu_tlbstate. */
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| 183 | #if RTLNX_VER_MIN(3,20,0)
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| 184 | # include <asm/tlbflush.h>
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| 185 | #endif
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| 186 |
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| 187 | /* for set_pages_x() */
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| 188 | #if RTLNX_VER_MIN(4,12,0)
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| 189 | # include <asm/set_memory.h>
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| 190 | #endif
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| 191 |
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| 192 | /* for __flush_tlb_all() */
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| 193 | #if RTLNX_VER_MIN(2,6,28) && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
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| 194 | # include <asm/tlbflush.h>
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| 195 | #endif
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| 196 |
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| 197 | /* for kernel_fpu_begin / kernel_fpu_end() */
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| 198 | #if RTLNX_VER_MIN(4,2,0) && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
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| 199 | # include <asm/fpu/api.h>
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| 200 | #endif
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| 201 |
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| 202 | #if RTLNX_VER_MIN(3,7,0) && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
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| 203 | # include <asm/smap.h>
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| 204 | #else
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| 205 | static inline void clac(void) { }
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| 206 | static inline void stac(void) { }
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| 207 | #endif
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| 208 |
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| 209 | #if RTLNX_VER_MAX(2,6,0)
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| 210 | # ifndef page_to_pfn
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| 211 | # define page_to_pfn(page) ((page) - mem_map)
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| 212 | # endif
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| 213 | #endif
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| 214 |
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| 215 | #ifndef DEFINE_WAIT
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| 216 | # define DEFINE_WAIT(name) DECLARE_WAITQUEUE(name, current)
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| 217 | #endif
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| 218 |
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| 219 | #ifndef __GFP_NOWARN
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| 220 | # define __GFP_NOWARN 0
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| 221 | #endif
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| 222 |
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| 223 | /*
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| 224 | * 2.4 / early 2.6 compatibility wrappers
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| 225 | */
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| 226 | #if RTLNX_VER_MAX(2,6,7)
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| 227 |
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| 228 | # ifndef MAX_JIFFY_OFFSET
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| 229 | # define MAX_JIFFY_OFFSET ((~0UL >> 1)-1)
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| 230 | # endif
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| 231 |
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| 232 | # if RTLNX_VER_MAX(2,4,29) || RTLNX_VER_MIN(2,6,0)
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| 233 |
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| 234 | DECLINLINE(unsigned int) jiffies_to_msecs(unsigned long cJiffies)
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| 235 | {
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| 236 | # if HZ <= 1000 && !(1000 % HZ)
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| 237 | return (1000 / HZ) * cJiffies;
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| 238 | # elif HZ > 1000 && !(HZ % 1000)
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| 239 | return (cJiffies + (HZ / 1000) - 1) / (HZ / 1000);
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| 240 | # else
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| 241 | return (cJiffies * 1000) / HZ;
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| 242 | # endif
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| 243 | }
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| 244 |
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| 245 | DECLINLINE(unsigned long) msecs_to_jiffies(unsigned int cMillies)
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| 246 | {
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| 247 | # if HZ > 1000
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| 248 | if (cMillies > jiffies_to_msecs(MAX_JIFFY_OFFSET))
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| 249 | return MAX_JIFFY_OFFSET;
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| 250 | # endif
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| 251 | # if HZ <= 1000 && !(1000 % HZ)
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| 252 | return (cMillies + (1000 / HZ) - 1) / (1000 / HZ);
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| 253 | # elif HZ > 1000 && !(HZ % 1000)
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| 254 | return cMillies * (HZ / 1000);
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| 255 | # else
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| 256 | return (cMillies * HZ + 999) / 1000;
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| 257 | # endif
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| 258 | }
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| 259 |
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| 260 | # endif /* < 2.4.29 || >= 2.6.0 */
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| 261 |
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| 262 | #endif /* < 2.6.7 */
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| 263 |
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| 264 | /*
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| 265 | * 2.4 compatibility wrappers
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| 266 | */
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| 267 | #if RTLNX_VER_MAX(2,6,0)
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| 268 |
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| 269 | # define prepare_to_wait(q, wait, state) \
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| 270 | do { \
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| 271 | add_wait_queue(q, wait); \
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| 272 | set_current_state(state); \
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| 273 | } while (0)
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| 274 |
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| 275 | # define after_wait(wait) \
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| 276 | do { \
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| 277 | list_del_init(&(wait)->task_list); \
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| 278 | } while (0)
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| 279 |
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| 280 | # define finish_wait(q, wait) \
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| 281 | do { \
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| 282 | set_current_state(TASK_RUNNING); \
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| 283 | remove_wait_queue(q, wait); \
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| 284 | } while (0)
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| 285 |
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| 286 | #else /* >= 2.6.0 */
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| 287 |
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| 288 | # define after_wait(wait) do {} while (0)
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| 289 |
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| 290 | #endif /* >= 2.6.0 */
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| 291 |
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| 292 | /** @def TICK_NSEC
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| 293 | * The time between ticks in nsec */
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| 294 | #ifndef TICK_NSEC
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| 295 | # define TICK_NSEC (1000000000UL / HZ)
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| 296 | #endif
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| 297 |
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| 298 | /*
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| 299 | * This sucks soooo badly on x86! Why don't they export __PAGE_KERNEL_EXEC so PAGE_KERNEL_EXEC would be usable?
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| 300 | */
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| 301 | #if RTLNX_VER_MIN(2,6,8) && defined(RT_ARCH_AMD64)
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| 302 | # define MY_PAGE_KERNEL_EXEC PAGE_KERNEL_EXEC
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| 303 | #elif RTLNX_VER_MIN(2,6,8) && defined(PAGE_KERNEL_EXEC) && defined(CONFIG_X86_PAE)
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| 304 | # ifdef __PAGE_KERNEL_EXEC
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| 305 | /* >= 2.6.27 */
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| 306 | # define MY_PAGE_KERNEL_EXEC __pgprot(boot_cpu_has(X86_FEATURE_PGE) ? __PAGE_KERNEL_EXEC | _PAGE_GLOBAL : __PAGE_KERNEL_EXEC)
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| 307 | # else
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| 308 | # define MY_PAGE_KERNEL_EXEC __pgprot(boot_cpu_has(X86_FEATURE_PGE) ? _PAGE_KERNEL_EXEC | _PAGE_GLOBAL : _PAGE_KERNEL_EXEC)
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| 309 | # endif
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| 310 | #else
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| 311 | # define MY_PAGE_KERNEL_EXEC PAGE_KERNEL
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| 312 | #endif
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| 313 |
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| 314 |
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| 315 | /*
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| 316 | * The redhat hack section.
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| 317 | * - The current hacks are for 2.4.21-15.EL only.
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| 318 | */
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| 319 | #ifndef NO_REDHAT_HACKS
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| 320 | /* accounting. */
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| 321 | # if RTLNX_VER_MAX(2,6,0)
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| 322 | # ifdef VM_ACCOUNT
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| 323 | # define USE_RHEL4_MUNMAP
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| 324 | # endif
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| 325 | # endif
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| 326 |
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| 327 | /* backported remap_page_range. */
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| 328 | # if RTLNX_VER_MAX(2,6,0)
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| 329 | # include <asm/tlb.h>
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| 330 | # ifdef tlb_vma /* probably not good enough... */
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| 331 | # define HAVE_26_STYLE_REMAP_PAGE_RANGE 1
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| 332 | # endif
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| 333 | # endif
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| 334 |
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| 335 | # ifndef RT_ARCH_AMD64
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| 336 | /* In 2.6.9-22.ELsmp we have to call change_page_attr() twice when changing
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| 337 | * the page attributes from PAGE_KERNEL to something else, because there appears
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| 338 | * to be a bug in one of the many patches that redhat applied.
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| 339 | * It should be safe to do this on less buggy linux kernels too. ;-)
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| 340 | */
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| 341 | # define MY_CHANGE_PAGE_ATTR(pPages, cPages, prot) \
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| 342 | do { \
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| 343 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) \
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| 344 | change_page_attr(pPages, cPages, prot); \
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| 345 | change_page_attr(pPages, cPages, prot); \
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| 346 | } while (0)
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| 347 | # endif /* !RT_ARCH_AMD64 */
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| 348 | #endif /* !NO_REDHAT_HACKS */
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| 349 |
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| 350 | #ifndef MY_CHANGE_PAGE_ATTR
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| 351 | # ifdef RT_ARCH_AMD64 /** @todo This is a cheap hack, but it'll get around that 'else BUG();' in __change_page_attr(). */
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| 352 | # define MY_CHANGE_PAGE_ATTR(pPages, cPages, prot) \
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| 353 | do { \
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| 354 | change_page_attr(pPages, cPages, PAGE_KERNEL_NOCACHE); \
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| 355 | change_page_attr(pPages, cPages, prot); \
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| 356 | } while (0)
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| 357 | # else
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| 358 | # define MY_CHANGE_PAGE_ATTR(pPages, cPages, prot) change_page_attr(pPages, cPages, prot)
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| 359 | # endif
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| 360 | #endif
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| 361 |
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| 362 | #if RTLNX_VER_MIN(2,6,25)
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| 363 | # if RTLNX_VER_MAX(5,4,0) /* The interface was removed, but we only need it for < 2.4.22, so who cares. */
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| 364 | # define MY_SET_PAGES_EXEC(pPages, cPages) set_pages_x(pPages, cPages)
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| 365 | # define MY_SET_PAGES_NOEXEC(pPages, cPages) set_pages_nx(pPages, cPages)
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| 366 | # endif
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| 367 | #else
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| 368 | # define MY_SET_PAGES_EXEC(pPages, cPages) \
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| 369 | do { \
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| 370 | if (pgprot_val(MY_PAGE_KERNEL_EXEC) != pgprot_val(PAGE_KERNEL)) \
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| 371 | MY_CHANGE_PAGE_ATTR(pPages, cPages, MY_PAGE_KERNEL_EXEC); \
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| 372 | } while (0)
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| 373 | # define MY_SET_PAGES_NOEXEC(pPages, cPages) \
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| 374 | do { \
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| 375 | if (pgprot_val(MY_PAGE_KERNEL_EXEC) != pgprot_val(PAGE_KERNEL)) \
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| 376 | MY_CHANGE_PAGE_ATTR(pPages, cPages, PAGE_KERNEL); \
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| 377 | } while (0)
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| 378 | #endif
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| 379 |
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| 380 | /** @def ONE_MSEC_IN_JIFFIES
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| 381 | * The number of jiffies that make up 1 millisecond. Must be at least 1! */
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| 382 | #if HZ <= 1000
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| 383 | # define ONE_MSEC_IN_JIFFIES 1
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| 384 | #elif !(HZ % 1000)
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| 385 | # define ONE_MSEC_IN_JIFFIES (HZ / 1000)
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| 386 | #else
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| 387 | # define ONE_MSEC_IN_JIFFIES ((HZ + 999) / 1000)
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| 388 | # error "HZ is not a multiple of 1000, the GIP stuff won't work right!"
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| 389 | #endif
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| 390 |
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| 391 | /*
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| 392 | * Stop using the linux bool type.
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| 393 | */
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| 394 | #undef bool
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| 395 |
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| 396 | #if RT_GNUC_PREREQ(4, 6)
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| 397 | # pragma GCC diagnostic pop
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| 398 | #endif
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| 399 |
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| 400 | /*
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| 401 | * There are post-2.6.24 kernels (confusingly with unchanged version number)
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| 402 | * which eliminate macros which were marked as deprecated.
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| 403 | */
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| 404 | #ifndef __attribute_used__
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| 405 | #define __attribute_used__ __used
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| 406 | #endif
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| 407 |
|
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| 408 | /**
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| 409 | * Hack for shortening pointers on linux so we can stuff more stuff into the
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| 410 | * task_struct::comm field. This is used by the semaphore code but put here
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| 411 | * because we don't have any better place atm. Don't use outside IPRT, please.
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| 412 | */
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| 413 | #ifdef RT_ARCH_AMD64
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| 414 | # define IPRT_DEBUG_SEMS_ADDRESS(addr) ( ((long)(addr) & (long)~UINT64_C(0xfffffff000000000)) )
|
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| 415 | #else
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| 416 | # define IPRT_DEBUG_SEMS_ADDRESS(addr) ( (long)(addr) )
|
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| 417 | #endif
|
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| 418 |
|
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| 419 | /**
|
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| 420 | * Puts semaphore info into the task_struct::comm field if IPRT_DEBUG_SEMS is
|
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| 421 | * defined.
|
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| 422 | */
|
|---|
| 423 | #ifdef IPRT_DEBUG_SEMS
|
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| 424 | # define IPRT_DEBUG_SEMS_STATE(pThis, chState) \
|
|---|
| 425 | snprintf(current->comm, sizeof(current->comm), "%c%lx", (chState), IPRT_DEBUG_SEMS_ADDRESS(pThis));
|
|---|
| 426 | #else
|
|---|
| 427 | # define IPRT_DEBUG_SEMS_STATE(pThis, chState) do { } while (0)
|
|---|
| 428 | #endif
|
|---|
| 429 |
|
|---|
| 430 | /**
|
|---|
| 431 | * Puts semaphore info into the task_struct::comm field if IPRT_DEBUG_SEMS is
|
|---|
| 432 | * defined.
|
|---|
| 433 | */
|
|---|
| 434 | #ifdef IPRT_DEBUG_SEMS
|
|---|
| 435 | # define IPRT_DEBUG_SEMS_STATE_RC(pThis, chState, rc) \
|
|---|
| 436 | snprintf(current->comm, sizeof(current->comm), "%c%lx:%d", (chState), IPRT_DEBUG_SEMS_ADDRESS(pThis), rc);
|
|---|
| 437 | #else
|
|---|
| 438 | # define IPRT_DEBUG_SEMS_STATE_RC(pThis, chState, rc) do { } while (0)
|
|---|
| 439 | #endif
|
|---|
| 440 |
|
|---|
| 441 | /** @name Macros for preserving EFLAGS.AC on 3.19+/amd64 paranoid.
|
|---|
| 442 | * The AMD 64 switch_to in macro in arch/x86/include/asm/switch_to.h stopped
|
|---|
| 443 | * restoring flags.
|
|---|
| 444 | * @{ */
|
|---|
| 445 | #if ( defined(CONFIG_X86_SMAP) \
|
|---|
| 446 | || (defined(RT_STRICT) && (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64))) \
|
|---|
| 447 | || defined(IPRT_WITH_EFLAGS_AC_PRESERVING)) \
|
|---|
| 448 | && !defined(IPRT_WITHOUT_EFLAGS_AC_PRESERVING)
|
|---|
| 449 | # include <iprt/asm-amd64-x86.h>
|
|---|
| 450 | # define IPRT_X86_EFL_AC RT_BIT(18)
|
|---|
| 451 | # define IPRT_LINUX_SAVE_EFL_AC() RTCCUINTREG fSavedEfl = ASMGetFlags()
|
|---|
| 452 | # define IPRT_LINUX_RESTORE_EFL_AC() ASMSetFlags(fSavedEfl)
|
|---|
| 453 | # define IPRT_LINUX_RESTORE_EFL_ONLY_AC() ASMChangeFlags(~IPRT_X86_EFL_AC, fSavedEfl & IPRT_X86_EFL_AC)
|
|---|
| 454 | #else
|
|---|
| 455 | # define IPRT_LINUX_SAVE_EFL_AC() do { } while (0)
|
|---|
| 456 | # define IPRT_LINUX_RESTORE_EFL_AC() do { } while (0)
|
|---|
| 457 | # define IPRT_LINUX_RESTORE_EFL_ONLY_AC() do { } while (0)
|
|---|
| 458 | #endif
|
|---|
| 459 | /** @} */
|
|---|
| 460 |
|
|---|
| 461 | /*
|
|---|
| 462 | * There are some conflicting defines in iprt/param.h, sort them out here.
|
|---|
| 463 | */
|
|---|
| 464 | #ifndef IPRT_INCLUDED_param_h
|
|---|
| 465 | # undef PAGE_SIZE
|
|---|
| 466 | # undef PAGE_OFFSET_MASK
|
|---|
| 467 | # include <iprt/param.h>
|
|---|
| 468 | #endif
|
|---|
| 469 |
|
|---|
| 470 | /*
|
|---|
| 471 | * Some global indicator macros.
|
|---|
| 472 | */
|
|---|
| 473 | /** @def IPRT_LINUX_HAS_HRTIMER
|
|---|
| 474 | * Whether the kernel support high resolution timers (Linux kernel versions
|
|---|
| 475 | * 2.6.28 and later (hrtimer_add_expires_ns() & schedule_hrtimeout). */
|
|---|
| 476 | #if RTLNX_VER_MIN(2,6,28) || defined(DOXYGEN_RUNNING)
|
|---|
| 477 | # define IPRT_LINUX_HAS_HRTIMER
|
|---|
| 478 | #endif
|
|---|
| 479 |
|
|---|
| 480 | /*
|
|---|
| 481 | * Workqueue stuff, see initterm-r0drv-linux.c.
|
|---|
| 482 | */
|
|---|
| 483 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 484 | typedef struct work_struct RTR0LNXWORKQUEUEITEM;
|
|---|
| 485 | #else
|
|---|
| 486 | typedef struct tq_struct RTR0LNXWORKQUEUEITEM;
|
|---|
| 487 | #endif
|
|---|
| 488 | DECLHIDDEN(void) rtR0LnxWorkqueuePush(RTR0LNXWORKQUEUEITEM *pWork, void (*pfnWorker)(RTR0LNXWORKQUEUEITEM *));
|
|---|
| 489 | DECLHIDDEN(void) rtR0LnxWorkqueueFlush(void);
|
|---|
| 490 |
|
|---|
| 491 | /*
|
|---|
| 492 | * Memory hacks from memobj-r0drv-linux.c that shared folders need.
|
|---|
| 493 | */
|
|---|
| 494 | RTDECL(struct page *) rtR0MemObjLinuxVirtToPage(void *pv);
|
|---|
| 495 |
|
|---|
| 496 | #endif /* !IPRT_INCLUDED_SRC_r0drv_linux_the_linux_kernel_h */
|
|---|
