From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 98D9DEDF057 for ; Thu, 12 Feb 2026 08:24:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0A1CA6B008C; Thu, 12 Feb 2026 03:24:07 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 059EF6B0092; Thu, 12 Feb 2026 03:24:07 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EDF566B0093; Thu, 12 Feb 2026 03:24:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id DEF696B008C for ; Thu, 12 Feb 2026 03:24:06 -0500 (EST) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id A40A3160741 for ; Thu, 12 Feb 2026 08:24:06 +0000 (UTC) X-FDA: 84435116892.23.25D5A2A Received: from out-183.mta1.migadu.com (out-183.mta1.migadu.com [95.215.58.183]) by imf29.hostedemail.com (Postfix) with ESMTP id 061A5120010 for ; Thu, 12 Feb 2026 08:24:04 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=mtLG1Cj7; spf=pass (imf29.hostedemail.com: domain of hui.zhu@linux.dev designates 95.215.58.183 as permitted sender) smtp.mailfrom=hui.zhu@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1770884645; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Qa7yRxcpGL3PnKF4R1l2meMqj6ZYK13/0dyEKREpmhI=; b=cJXSa44MkepvlDjSsLYlSZ4eweibv8dqxjF6LAvaQrARsdUFV2RAQY/8cr6GiHEM/92u1O 2Be296fJpqJl2ZRap0YqlytdmfaOogZcJbkN+oIpHA3F0yqHEdxKhB4acT8oNNuJPdJBj9 7olsc+eg1SEDVbHtD4fEdhfRfksX/hg= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=mtLG1Cj7; spf=pass (imf29.hostedemail.com: domain of hui.zhu@linux.dev designates 95.215.58.183 as permitted sender) smtp.mailfrom=hui.zhu@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1770884645; a=rsa-sha256; cv=none; b=1a89hfHbA+1JhlJeM1Zzgm0en5doSeUV8LerlByYep3KJsnfWWDKX29v7elI5M8BtYGWC9 ec/Y+0DKfbPgLfqsHyj3NFGWie2lnXTzawqyaqyvRgrJHUlzRQ9pzaSk7TqScry+hDtJm4 fcmRWLnmbNeXxoV4TiLEPDsOurVAOPY= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1770884643; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Qa7yRxcpGL3PnKF4R1l2meMqj6ZYK13/0dyEKREpmhI=; b=mtLG1Cj7F/NN0pQvl1k5tAmMqtzQ0Q7TM4SCVi9GMjgpIDSLSvRuNgxNUBKEWiMccVbj7z K8W4rDks82e97Z8KcgkhM8a3y1wY/HTQgqGjhSAkMrndvzi66dbkI4Pxi7c8hQrM0ljZR8 mAMheL03KE5ojdB75JZXNKsapNcnw0A= From: Hui Zhu To: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan , Hui Zhu , JP Kobryn , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next 3/3] selftests/bpf: Skip test_kmem when cgroup.memory=nokmem Date: Thu, 12 Feb 2026 16:23:16 +0800 Message-ID: <2f6ee1db173b67a636b2caa85744cb4ce8114e64.1770883926.git.zhuhui@kylinos.cn> In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 061A5120010 X-Stat-Signature: qc1wg6wap9kqxk78un8885d3wke454ka X-Rspam-User: X-HE-Tag: 1770884644-453826 X-HE-Meta: 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 imI9Vf+0 0qE/YDnUvE3uGmqivgvviaz/1zNuOMI8MnKF6YuJuPumZBRNtVHjCW+EtZLNpAAg+iMiKkD2jUhOLchqsCv8K0bspu+c/FA5TQO6jtx/bABlKiNYNCRKRYDK2jIoumME6Hr8LveqU8Sd8nkmnuj3kYr+dbP4nK+y7k+De477fqCV8S744uSkw7SqNxUC5Qce5EzUDoLXkPw1FCOknlcrRbBvQxLk45j+w2Uvt07xvnMsxXSwe7YndaT+99nW0igCpwOIGEGDy3HceD0Detp8/1ME9OA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Hui Zhu When cgroup.memory=nokmem is set in kernel command line, kmem accounting is disabled and the test_kmem subtest will fail. Add a check to skip this test when the parameter is present. Signed-off-by: Hui Zhu --- .../bpf/prog_tests/cgroup_iter_memcg.c | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_iter_memcg.c b/tools/testing/selftests/bpf/prog_tests/cgroup_iter_memcg.c index 13b299512429..203e6b091a21 100644 --- a/tools/testing/selftests/bpf/prog_tests/cgroup_iter_memcg.c +++ b/tools/testing/selftests/bpf/prog_tests/cgroup_iter_memcg.c @@ -134,11 +134,39 @@ static void test_shmem(struct bpf_link *link, struct memcg_query *memcg_query) shm_unlink("/tmp_shmem"); } +static bool cmdline_has(const char *arg) +{ + char cmdline[4096]; + int fd; + ssize_t len; + bool ret = false; + + fd = open("/proc/cmdline", O_RDONLY); + if (fd < 0) + return false; + + len = read(fd, cmdline, sizeof(cmdline) - 1); + close(fd); + if (len < 0) + return false; + + cmdline[len] = '\0'; + if (strstr(cmdline, arg)) + ret = true; + + return ret; +} + #define NR_PIPES 64 static void test_kmem(struct bpf_link *link, struct memcg_query *memcg_query) { int fds[NR_PIPES][2], i; + if (cmdline_has("cgroup.memory=nokmem")) { + test__skip(); + return; + } + /* * Increase kmem value by creating pipes which will allocate some * kernel buffers. -- 2.43.0