From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755630AbcH1OiD (ORCPT ); Sun, 28 Aug 2016 10:38:03 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:34882 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755597AbcH1OiA (ORCPT ); Sun, 28 Aug 2016 10:38:00 -0400 X-IBM-Helo: d06dlp03.portsmouth.uk.ibm.com X-IBM-MailFrom: rppt@linux.vnet.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org From: Mike Rapoport To: Andrea Arcangeli Cc: Pavel Emelyanov , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mike Rapoport Subject: [PATCH 1/3] userfaultfd: selftest: introduce userfaultfd_open Date: Sun, 28 Aug 2016 17:37:45 +0300 X-Mailer: git-send-email 1.9.1 In-Reply-To: <1472395067-24538-1-git-send-email-rppt@linux.vnet.ibm.com> References: <1472395067-24538-1-git-send-email-rppt@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16082814-0040-0000-0000-000002C6EBB6 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16082814-0041-0000-0000-00001CBBC604 Message-Id: <1472395067-24538-2-git-send-email-rppt@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-28_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1608280143 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Mike Rapoport --- tools/testing/selftests/vm/userfaultfd.c | 41 +++++++++++++++++++------------- 1 file changed, 25 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index a5e5808..75540e7 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -81,7 +81,7 @@ static int huge_fd; static char *huge_fd_off0; #endif static unsigned long long *count_verify; -static int uffd, finished, *pipefd; +static int uffd, uffd_flags, finished, *pipefd; static char *area_src, *area_dst; static char *zeropage; pthread_attr_t attr; @@ -512,23 +512,9 @@ static int stress(unsigned long *userfaults) return 0; } -static int userfaultfd_stress(void) +static int userfaultfd_open(void) { - void *area; - char *tmp_area; - unsigned long nr; - struct uffdio_register uffdio_register; struct uffdio_api uffdio_api; - unsigned long cpu; - int uffd_flags, err; - unsigned long userfaults[nr_cpus]; - - allocate_area((void **)&area_src); - if (!area_src) - return 1; - allocate_area((void **)&area_dst); - if (!area_dst) - return 1; uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); if (uffd < 0) { @@ -549,6 +535,29 @@ static int userfaultfd_stress(void) return 1; } + return 0; +} + +static int userfaultfd_stress(void) +{ + void *area; + char *tmp_area; + unsigned long nr; + struct uffdio_register uffdio_register; + unsigned long cpu; + int err; + unsigned long userfaults[nr_cpus]; + + allocate_area((void **)&area_src); + if (!area_src) + return 1; + allocate_area((void **)&area_dst); + if (!area_dst) + return 1; + + if (userfaultfd_open() < 0) + return 1; + count_verify = malloc(nr_pages * sizeof(unsigned long long)); if (!count_verify) { perror("count_verify"); -- 1.9.1