| 1 | /* $Id: initterm-r0drv-linux.c 98103 2023-01-17 14:15:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Initialization & Termination, R0 Driver, Linux.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * The contents of this file may alternatively be used under the terms
|
|---|
| 26 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 28 | * in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 29 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 30 | *
|
|---|
| 31 | * You may elect to license modified versions of this file under the
|
|---|
| 32 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 33 | *
|
|---|
| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | /*********************************************************************************************************************************
|
|---|
| 39 | * Header Files *
|
|---|
| 40 | *********************************************************************************************************************************/
|
|---|
| 41 | #include "the-linux-kernel.h"
|
|---|
| 42 | #include "internal/iprt.h"
|
|---|
| 43 | #include <iprt/errcore.h>
|
|---|
| 44 | #include <iprt/assert.h>
|
|---|
| 45 | #include "internal/initterm.h"
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | /*********************************************************************************************************************************
|
|---|
| 49 | * Global Variables *
|
|---|
| 50 | *********************************************************************************************************************************/
|
|---|
| 51 | /** The IPRT work queue. */
|
|---|
| 52 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 53 | static struct workqueue_struct *g_prtR0LnxWorkQueue;
|
|---|
| 54 | #else
|
|---|
| 55 | static DECLARE_TASK_QUEUE(g_rtR0LnxWorkQueue);
|
|---|
| 56 | #endif
|
|---|
| 57 |
|
|---|
| 58 |
|
|---|
| 59 | /**
|
|---|
| 60 | * Pushes an item onto the IPRT work queue.
|
|---|
| 61 | *
|
|---|
| 62 | * @param pWork The work item.
|
|---|
| 63 | * @param pfnWorker The callback function. It will be called back
|
|---|
| 64 | * with @a pWork as argument.
|
|---|
| 65 | */
|
|---|
| 66 | DECLHIDDEN(void) rtR0LnxWorkqueuePush(RTR0LNXWORKQUEUEITEM *pWork, void (*pfnWorker)(RTR0LNXWORKQUEUEITEM *))
|
|---|
| 67 | {
|
|---|
| 68 | IPRT_LINUX_SAVE_EFL_AC();
|
|---|
| 69 |
|
|---|
| 70 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 71 | # if RTLNX_VER_MIN(2,6,20)
|
|---|
| 72 | INIT_WORK(pWork, pfnWorker);
|
|---|
| 73 | # else
|
|---|
| 74 | INIT_WORK(pWork, (void (*)(void *))pfnWorker, pWork);
|
|---|
| 75 | # endif
|
|---|
| 76 | queue_work(g_prtR0LnxWorkQueue, pWork);
|
|---|
| 77 | #else
|
|---|
| 78 | INIT_TQUEUE(pWork, (void (*)(void *))pfnWorker, pWork);
|
|---|
| 79 | queue_task(pWork, &g_rtR0LnxWorkQueue);
|
|---|
| 80 | #endif
|
|---|
| 81 |
|
|---|
| 82 | IPRT_LINUX_RESTORE_EFL_AC();
|
|---|
| 83 | }
|
|---|
| 84 |
|
|---|
| 85 |
|
|---|
| 86 | /**
|
|---|
| 87 | * Flushes all items in the IPRT work queue.
|
|---|
| 88 | *
|
|---|
| 89 | * @remarks This is mostly for 2.4.x compatability. Must not be called from
|
|---|
| 90 | * atomic contexts or with unncessary locks held.
|
|---|
| 91 | */
|
|---|
| 92 | DECLHIDDEN(void) rtR0LnxWorkqueueFlush(void)
|
|---|
| 93 | {
|
|---|
| 94 | IPRT_LINUX_SAVE_EFL_AC();
|
|---|
| 95 |
|
|---|
| 96 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 97 | flush_workqueue(g_prtR0LnxWorkQueue);
|
|---|
| 98 | #else
|
|---|
| 99 | run_task_queue(&g_rtR0LnxWorkQueue);
|
|---|
| 100 | #endif
|
|---|
| 101 |
|
|---|
| 102 | IPRT_LINUX_RESTORE_EFL_AC();
|
|---|
| 103 | }
|
|---|
| 104 |
|
|---|
| 105 |
|
|---|
| 106 | DECLHIDDEN(int) rtR0InitNative(void)
|
|---|
| 107 | {
|
|---|
| 108 | int rc = VINF_SUCCESS;
|
|---|
| 109 | IPRT_LINUX_SAVE_EFL_AC();
|
|---|
| 110 |
|
|---|
| 111 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 112 | #if RTLNX_VER_MIN(2,6,13)
|
|---|
| 113 | g_prtR0LnxWorkQueue = create_workqueue("iprt-VBoxWQueue");
|
|---|
| 114 | #else
|
|---|
| 115 | g_prtR0LnxWorkQueue = create_workqueue("iprt-VBoxQ");
|
|---|
| 116 | #endif
|
|---|
| 117 | if (!g_prtR0LnxWorkQueue)
|
|---|
| 118 | rc = VERR_NO_MEMORY;
|
|---|
| 119 | #endif
|
|---|
| 120 |
|
|---|
| 121 | IPRT_LINUX_RESTORE_EFL_AC();
|
|---|
| 122 | return rc;
|
|---|
| 123 | }
|
|---|
| 124 |
|
|---|
| 125 |
|
|---|
| 126 | DECLHIDDEN(void) rtR0TermNative(void)
|
|---|
| 127 | {
|
|---|
| 128 | IPRT_LINUX_SAVE_EFL_AC();
|
|---|
| 129 |
|
|---|
| 130 | rtR0LnxWorkqueueFlush();
|
|---|
| 131 | #if RTLNX_VER_MIN(2,5,41)
|
|---|
| 132 | destroy_workqueue(g_prtR0LnxWorkQueue);
|
|---|
| 133 | g_prtR0LnxWorkQueue = NULL;
|
|---|
| 134 | #endif
|
|---|
| 135 |
|
|---|
| 136 | IPRT_LINUX_RESTORE_EFL_AC();
|
|---|
| 137 | }
|
|---|
| 138 |
|
|---|
