| 1 | /* $Id: loadgeneratorR0.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * Load Generator, Ring-0 Service.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2008-2023 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 <iprt/mp.h>
|
|---|
| 42 | #include <VBox/sup.h>
|
|---|
| 43 | #include <iprt/errcore.h>
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | /**
|
|---|
| 49 | * Worker for loadgenR0Ipi.
|
|---|
| 50 | */
|
|---|
| 51 | static DECLCALLBACK(void) loadgenR0IpiWorker(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
|---|
| 52 | {
|
|---|
| 53 | NOREF(idCpu);
|
|---|
| 54 | NOREF(pvUser1);
|
|---|
| 55 | NOREF(pvUser2);
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 |
|
|---|
| 59 | /**
|
|---|
| 60 | * Generate broadcast inter processor interrupts (IPI), aka cross calls.
|
|---|
| 61 | *
|
|---|
| 62 | * @returns VBox status code.
|
|---|
| 63 | * @param cIpis The number of IPIs to do.
|
|---|
| 64 | */
|
|---|
| 65 | static int loadgenR0Ipi(uint64_t cIpis)
|
|---|
| 66 | {
|
|---|
| 67 | if (cIpis > _1G || !cIpis)
|
|---|
| 68 | return VERR_INVALID_PARAMETER;
|
|---|
| 69 |
|
|---|
| 70 | while (cIpis-- > 0)
|
|---|
| 71 | {
|
|---|
| 72 | int rc = RTMpOnAll(loadgenR0IpiWorker, NULL, NULL);
|
|---|
| 73 | if (RT_FAILURE(rc))
|
|---|
| 74 | return rc;
|
|---|
| 75 | }
|
|---|
| 76 | return VINF_SUCCESS;
|
|---|
| 77 | }
|
|---|
| 78 |
|
|---|
| 79 |
|
|---|
| 80 | /**
|
|---|
| 81 | * Service request handler entry point.
|
|---|
| 82 | *
|
|---|
| 83 | * @copydoc FNSUPR0SERVICEREQHANDLER
|
|---|
| 84 | */
|
|---|
| 85 | extern "C" DECLEXPORT(int) LoadGenR0ServiceReqHandler(PSUPDRVSESSION pSession, uint32_t uOperation,
|
|---|
| 86 | uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr)
|
|---|
| 87 |
|
|---|
| 88 | {
|
|---|
| 89 | switch (uOperation)
|
|---|
| 90 | {
|
|---|
| 91 | case 0:
|
|---|
| 92 | if (pReqHdr)
|
|---|
| 93 | return VERR_INVALID_PARAMETER;
|
|---|
| 94 | return loadgenR0Ipi(u64Arg);
|
|---|
| 95 |
|
|---|
| 96 | default:
|
|---|
| 97 | NOREF(pSession);
|
|---|
| 98 | return VERR_NOT_SUPPORTED;
|
|---|
| 99 | }
|
|---|
| 100 | }
|
|---|
| 101 |
|
|---|
