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Mon, 8 May 2023 13:49:06 +0000 (UTC) Received: from fedora-laptop.redhat.com (ovpn-12-196.pek2.redhat.com [10.72.12.196]) by smtp.corp.redhat.com (Postfix) with ESMTP id 443F41121314 for ; Mon, 8 May 2023 13:49:04 +0000 (UTC) From: Li Wang To: ltp@lists.linux.it Date: Mon, 8 May 2023 21:49:03 +0800 Message-Id: <20230508134903.83591-1-liwang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Virus-Scanned: clamav-milter 0.102.4 at in-6.smtp.seeweb.it X-Virus-Status: Clean X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on in-6.smtp.seeweb.it Subject: [LTP] [PATCH] hugemmap32: guarantee enough memory for gigantic hugepage 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: , Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" To get rid of warning on ppc64le: hugemmap32.c:34: TWARN: Failed to close FILE '/sys/kernel/mm/hugepages/hugepages-16777216kB/nr_hugepages' hugemmap32.c:35: TCONF: Can't update the gigantic hugepages. hugemmap32.c:69: TWARN: Failed to close FILE '/sys/kernel/mm/hugepages/hugepages-16777216kB/nr_hugepages': EINVAL (22) # ll /sys/kernel/mm/hugepages/ total 0 drwxr-xr-x. 2 root root 0 May 4 02:02 hugepages-16384kB drwxr-xr-x. 2 root root 0 May 4 02:02 hugepages-16777216kB # cat /proc/meminfo | grep -i Hugepagesize Hugepagesize: 16384 kB # free -h total used free shared buff/cache available Mem: 7.4Gi 1.1Gi 992Mi 13Mi 5.9Gi 6.3Gi Swap: 4.0Gi 0B 4.0Gi Signed-off-by: Li Wang Reviewed-by: Cyril Hrubis --- testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c index 34b322bfa..7ff23b236 100644 --- a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c +++ b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c @@ -60,6 +60,12 @@ static void setup(void) tst_brk(TCONF, "Gigantic hugepages not supported"); SAFE_CLOSEDIR(dir); + + if (tst_available_mem() < (long long)hpage_size) { + g_hpage_path[0] = '\0'; + tst_brk(TCONF, "No enough memory for gigantic hugepage reserving"); + } + SAFE_FILE_LINES_SCANF(g_hpage_path, "%d", &org_g_hpages); }