From patchwork Sun Jan 28 02:48:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Wang X-Patchwork-Id: 1891832 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=jOi6A9FO; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it (client-ip=2001:1418:10:5::2; helo=picard.linux.it; envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it; receiver=patchwork.ozlabs.org) Received: from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TMwrm6JH3z1yQ0 for ; Sun, 28 Jan 2024 13:50:00 +1100 (AEDT) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id DA5F53CE5F2 for ; Sun, 28 Jan 2024 03:49:58 +0100 (CET) X-Original-To: ltp@lists.linux.it Delivered-To: ltp@picard.linux.it Received: from in-6.smtp.seeweb.it (in-6.smtp.seeweb.it [IPv6:2001:4b78:1:20::6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 74F4C3CE19A for ; Sun, 28 Jan 2024 03:48:57 +0100 (CET) Authentication-Results: in-6.smtp.seeweb.it; spf=pass (sender SPF authorized) smtp.mailfrom=redhat.com (client-ip=170.10.133.124; helo=us-smtp-delivery-124.mimecast.com; envelope-from=liwang@redhat.com; receiver=lists.linux.it) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-6.smtp.seeweb.it (Postfix) with ESMTPS id D22FF1400E1A for ; Sun, 28 Jan 2024 03:48:55 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1706410133; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8e+5PnydiAjGtB6qXElWFCEHlHGnXso8cOSkA+m6ysk=; b=jOi6A9FOxFB1oO+tLNMLzPLo7qxXe/9C1uIs1/3CQotipSg73vU5gmI4bRtBa+tzfa2yuB HdtaehFb8QrAUA6XlUuieJDvPs7ksaMdZVkYqBbFcN1cRVROXhP7sdXdkcaarHwZpPNgRE mZO1ohvUr385qh+uDd8bqp6qpDZYnAM= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-20-ZyXaPHcRMqq8lPCXoTwKyw-1; Sat, 27 Jan 2024 21:48:49 -0500 X-MC-Unique: ZyXaPHcRMqq8lPCXoTwKyw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9F75A837224; Sun, 28 Jan 2024 02:48:48 +0000 (UTC) Received: from liwang-workstation.lab.eng.nay.redhat.com (unknown [10.66.145.229]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6CACC1C060B1; Sun, 28 Jan 2024 02:48:47 +0000 (UTC) From: Li Wang To: ltp@lists.linux.it Date: Sun, 28 Jan 2024 10:48:33 +0800 Message-Id: <20240128024838.2699248-4-liwang@redhat.com> In-Reply-To: <20240128024838.2699248-1-liwang@redhat.com> References: <20240128024838.2699248-1-liwang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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 shortcircuit=no autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on in-6.smtp.seeweb.it X-Virus-Scanned: clamav-milter 1.0.3 at in-6.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v5 3/8] swapon01: Improving test with memory limits and swap reporting 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" This is target to create a more robust and controlled environment to test the swapon system call. By introducing memory limits through cgroups and filling memory with a known pattern, the test can better assess swapon behavior when the system experiences memory pressure. Additionally, the reporting of "SwapCached" memory before turning off the swap file provides a clearer understanding of the swap system's state in response to the test conditions. Signed-off-by: Li Wang Tested-by: Petr Vorel Reviewed-by: Petr Vorel --- testcases/kernel/syscalls/swapon/swapon01.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/testcases/kernel/syscalls/swapon/swapon01.c b/testcases/kernel/syscalls/swapon/swapon01.c index e1fe50459..a74a5171e 100644 --- a/testcases/kernel/syscalls/swapon/swapon01.c +++ b/testcases/kernel/syscalls/swapon/swapon01.c @@ -20,11 +20,15 @@ #define MNTPOINT "mntpoint" #define SWAP_FILE MNTPOINT"/swapfile01" +#define TESTMEM (1UL<<30) static void verify_swapon(void) { TST_EXP_PASS(tst_syscall(__NR_swapon, SWAP_FILE, 0)); + tst_pollute_memory(TESTMEM, 0x41); + tst_res(TINFO, "SwapCached: %ld Kb", SAFE_READ_MEMINFO("SwapCached:")); + if (TST_PASS && tst_syscall(__NR_swapoff, SWAP_FILE) != 0) { tst_brk(TBROK | TERRNO, "Failed to turn off swapfile, system reboot recommended"); @@ -35,6 +39,9 @@ static void setup(void) { is_swap_supported(SWAP_FILE); make_swapfile(SWAP_FILE, 0); + + SAFE_CG_PRINTF(tst_cg, "cgroup.procs", "%d", getpid()); + SAFE_CG_PRINTF(tst_cg, "memory.max", "%lu", TESTMEM); } static struct tst_test test = { @@ -42,6 +49,7 @@ static struct tst_test test = { .mount_device = 1, .needs_root = 1, .all_filesystems = 1, + .needs_cgroup_ctrls = (const char *const []){ "memory", NULL }, .test_all = verify_swapon, .setup = setup };