diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/linux/initterm-r0drv-linux.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/linux/initterm-r0drv-linux.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/linux/initterm-r0drv-linux.c b/src/VBox/Runtime/r0drv/linux/initterm-r0drv-linux.c new file mode 100644 index 00000000..ee64d1a2 --- /dev/null +++ b/src/VBox/Runtime/r0drv/linux/initterm-r0drv-linux.c @@ -0,0 +1,138 @@ +/* $Id: initterm-r0drv-linux.c $ */ +/** @file + * IPRT - Initialization & Termination, R0 Driver, Linux. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-linux-kernel.h" +#include "internal/iprt.h" +#include <iprt/errcore.h> +#include <iprt/assert.h> +#include "internal/initterm.h" + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** The IPRT work queue. */ +#if RTLNX_VER_MIN(2,5,41) +static struct workqueue_struct *g_prtR0LnxWorkQueue; +#else +static DECLARE_TASK_QUEUE(g_rtR0LnxWorkQueue); +#endif + + +/** + * Pushes an item onto the IPRT work queue. + * + * @param pWork The work item. + * @param pfnWorker The callback function. It will be called back + * with @a pWork as argument. + */ +DECLHIDDEN(void) rtR0LnxWorkqueuePush(RTR0LNXWORKQUEUEITEM *pWork, void (*pfnWorker)(RTR0LNXWORKQUEUEITEM *)) +{ + IPRT_LINUX_SAVE_EFL_AC(); + +#if RTLNX_VER_MIN(2,5,41) +# if RTLNX_VER_MIN(2,6,20) + INIT_WORK(pWork, pfnWorker); +# else + INIT_WORK(pWork, (void (*)(void *))pfnWorker, pWork); +# endif + queue_work(g_prtR0LnxWorkQueue, pWork); +#else + INIT_TQUEUE(pWork, (void (*)(void *))pfnWorker, pWork); + queue_task(pWork, &g_rtR0LnxWorkQueue); +#endif + + IPRT_LINUX_RESTORE_EFL_AC(); +} + + +/** + * Flushes all items in the IPRT work queue. + * + * @remarks This is mostly for 2.4.x compatability. Must not be called from + * atomic contexts or with unncessary locks held. + */ +DECLHIDDEN(void) rtR0LnxWorkqueueFlush(void) +{ + IPRT_LINUX_SAVE_EFL_AC(); + +#if RTLNX_VER_MIN(2,5,41) + flush_workqueue(g_prtR0LnxWorkQueue); +#else + run_task_queue(&g_rtR0LnxWorkQueue); +#endif + + IPRT_LINUX_RESTORE_EFL_AC(); +} + + +DECLHIDDEN(int) rtR0InitNative(void) +{ + int rc = VINF_SUCCESS; + IPRT_LINUX_SAVE_EFL_AC(); + +#if RTLNX_VER_MIN(2,5,41) + #if RTLNX_VER_MIN(2,6,13) + g_prtR0LnxWorkQueue = create_workqueue("iprt-VBoxWQueue"); + #else + g_prtR0LnxWorkQueue = create_workqueue("iprt-VBoxQ"); + #endif + if (!g_prtR0LnxWorkQueue) + rc = VERR_NO_MEMORY; +#endif + + IPRT_LINUX_RESTORE_EFL_AC(); + return rc; +} + + +DECLHIDDEN(void) rtR0TermNative(void) +{ + IPRT_LINUX_SAVE_EFL_AC(); + + rtR0LnxWorkqueueFlush(); +#if RTLNX_VER_MIN(2,5,41) + destroy_workqueue(g_prtR0LnxWorkQueue); + g_prtR0LnxWorkQueue = NULL; +#endif + + IPRT_LINUX_RESTORE_EFL_AC(); +} + |