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Fri, 8 Sep 2023 12:11:49 +0000 (GMT) From: Sachin P Bappalige To: ltp@lists.linux.it Date: Fri, 8 Sep 2023 07:11:35 -0500 Message-Id: <20230908121135.245296-1-sachinpb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.39.3 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: mrCbJlb2EMLrVwlp1y8pLmk1a0nbF73y X-Proofpoint-ORIG-GUID: mrCbJlb2EMLrVwlp1y8pLmk1a0nbF73y X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-08_09,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1011 impostorscore=0 suspectscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=999 phishscore=0 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309080111 X-Virus-Scanned: clamav-milter 1.0.1 at in-3.smtp.seeweb.it X-Virus-Status: Clean X-Mailman-Approved-At: Fri, 08 Sep 2023 14:16:32 +0200 Subject: [LTP] [PATCH] Migrating the libhugetlbfs/testcases/shm-gettest.c test X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geetika@linux.ibm.com, Sachin P Bappalige Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Test Description: This testcase creates shared memory segments backed by hugepages, writes specific patterns to each segment, verifies pattern and detaches a shared memory segments in a loop. This looping test was added to verify the functionality of large page backed shared memory segments. A segment is created, written, verified, and detached a specified number of times. Signed-off-by: Sachin P Bappalige --- runtest/hugetlb | 1 + testcases/kernel/mem/.gitignore | 1 + .../kernel/mem/hugetlb/hugemmap/hugepage35.c | 93 +++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 testcases/kernel/mem/hugetlb/hugemmap/hugepage35.c diff --git a/runtest/hugetlb b/runtest/hugetlb index 299c07ac9..6bebc706c 100644 --- a/runtest/hugetlb +++ b/runtest/hugetlb @@ -35,6 +35,7 @@ hugemmap29 hugemmap29 hugemmap30 hugemmap30 hugemmap31 hugemmap31 hugemmap32 hugemmap32 +hugemmap35 hugemmap35 hugemmap05_1 hugemmap05 -m hugemmap05_2 hugemmap05 -s hugemmap05_3 hugemmap05 -s -m diff --git a/testcases/kernel/mem/.gitignore b/testcases/kernel/mem/.gitignore index 7258489ed..bbc029716 100644 --- a/testcases/kernel/mem/.gitignore +++ b/testcases/kernel/mem/.gitignore @@ -34,6 +34,7 @@ /hugetlb/hugemmap/hugemmap30 /hugetlb/hugemmap/hugemmap31 /hugetlb/hugemmap/hugemmap32 +/hugetlb/hugemmap/hugemmap35 /hugetlb/hugeshmat/hugeshmat01 /hugetlb/hugeshmat/hugeshmat02 /hugetlb/hugeshmat/hugeshmat03 diff --git a/testcases/kernel/mem/hugetlb/hugemmap/hugepage35.c b/testcases/kernel/mem/hugetlb/hugemmap/hugepage35.c new file mode 100644 index 000000000..fb603b4ef --- /dev/null +++ b/testcases/kernel/mem/hugetlb/hugemmap/hugepage35.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2005-2006, IBM Corporation. + * Author: David Gibson & Adam Litke + */ + +/*\ + * [Description] + * + * Test Name: shm-gettest.c + * + * This testcase creates shared memory segments backed by hugepages, + * writes specific patterns to each segment, verifies pattern, + * and detaches a shared memory segments in a loop. + * It ensures that the hugepage backed shared memory functionalities + * works correctly by validating the data written to segment. + */ + +#include "hugetlb.h" +#include "tst_safe_sysv_ipc.h" + +#define MNTPOINT "hugetlbfs/" +#define NR_HUGEPAGES 4 + +static long hpage_size; +static unsigned int iter; +static int shmid = -1, key = -1; + +static void do_shmtest(size_t size) { + size_t i, j; + char pattern; + char *shmaddr; + + shmid = SAFE_SHMGET(key, size, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W); + tst_res(TINFO, "shmid: 0x%x\n", shmid); + + shmaddr = SAFE_SHMAT(shmid, 0, SHM_RND); + tst_res(TINFO, "shmaddr: %p\n", shmaddr); + + for (i = 0; i < NR_HUGEPAGES; i++) { + pattern = 65 + (i % 26); + tst_res(TINFO, "Touching %p with %c\n", + shmaddr + (i * hpage_size), pattern); + memset(shmaddr + (i * hpage_size), pattern, hpage_size); + } + + for (i = 0; i < NR_HUGEPAGES; i++) { + pattern = 65 + (i % 26); + tst_res(TINFO, "Verifying %p\n", (shmaddr + (i * hpage_size))); + for (j = 0; j < (size_t)hpage_size; j++) + if (*(shmaddr + (i * hpage_size) + j) != pattern) + tst_res(TFAIL, "Verifying the segment failed." + "Got %c, expected %c", + *(shmaddr + (i * hpage_size) + j), + pattern); + } + SAFE_SHMDT((const void *)shmaddr); +} + +static void run_test(void) +{ + int i; + iter = 2; + size_t size; + size = NR_HUGEPAGES * hpage_size; + for (i=0; i < (int)iter; i++) + do_shmtest(size); + tst_res(TPASS, "Successfully tested shared memory segment operations " + "backed by hugepages"); +} + +static void setup(void) +{ + hpage_size = tst_get_hugepage_size(); + tst_res(TINFO, "hugepage size is %ld", hpage_size); +} + +static void cleanup(void) +{ + if (shmid >= 0) + // Remove the shared memory segment + SAFE_SHMCTL(shmid, IPC_RMID, NULL); +} + +static struct tst_test test = { + .needs_root = 1, + .mntpoint = MNTPOINT, + .needs_hugetlbfs = 1, + .setup = setup, + .cleanup = cleanup, + .test_all = run_test, + .hugepages = {NR_HUGEPAGES, TST_NEEDS}, +}; -- 2.39.3 -- Mailing list info: https://lists.linux.it/listinfo/ltp