From patchwork Wed May 18 15:40:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Michal_Koutn=C3=BD?= X-Patchwork-Id: 12853811 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 755F5C433EF for ; Wed, 18 May 2022 15:40:54 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0195A6B0073; Wed, 18 May 2022 11:40:53 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F0A186B0074; Wed, 18 May 2022 11:40:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D83F16B0075; Wed, 18 May 2022 11:40:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id CB72F6B0073 for ; Wed, 18 May 2022 11:40:52 -0400 (EDT) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay12.hostedemail.com (Postfix) with ESMTP id 9A9B1120559 for ; Wed, 18 May 2022 15:40:52 +0000 (UTC) X-FDA: 79479276744.07.136A77A Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf28.hostedemail.com (Postfix) with ESMTP id B0886C00B8 for ; Wed, 18 May 2022 15:40:25 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id EDF811F8D9; Wed, 18 May 2022 15:40:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1652888447; h=from:from:reply-to: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=nGOjxaCmozTaID0zJr5Qv3xqJGJFYW6IddaRszUZ5Io=; b=qH9RzgwWP6HM53SV3SM9GGw5HQvJnlpl2b6Igr7X3voYR3Dc6P/OeGTR8HmssfX0JXtIb3 IFt9nGwpbzlH5B8YLrnC+uRfxBCXJjdl9/mD2oT3bwzduOCwx8obI4+3YeG0Vv0iNgE7Bd YcDBOk6JwLQkbFgeamv+7fxW53/ziPo= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id BEA7D13A6D; Wed, 18 May 2022 15:40:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id wLqYLX8ThWJDUgAAMHmgww (envelope-from ); Wed, 18 May 2022 15:40:47 +0000 From: =?utf-8?q?Michal_Koutn=C3=BD?= To: cgroups@vger.kernel.org, linux-mm@kvack.org Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Richard Palethorpe Subject: [PATCH 4/4] selftests: memcg: Remove protection from top level memcg Date: Wed, 18 May 2022 17:40:37 +0200 Message-Id: <20220518154037.18819-5-mkoutny@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220518154037.18819-1-mkoutny@suse.com> References: <20220518154037.18819-1-mkoutny@suse.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: B0886C00B8 X-Stat-Signature: 43ris1in1d1u35p5zqz8xh6qrd9jtttr Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=qH9RzgwW; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf28.hostedemail.com: domain of mkoutny@suse.com designates 195.135.220.29 as permitted sender) smtp.mailfrom=mkoutny@suse.com X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1652888425-998026 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: The reclaim is triggered by memory limit in a subtree, therefore the testcase does not need configured protection against external reclaim. Also, correct/deduplicate respective comments Signed-off-by: Michal Koutný --- tools/testing/selftests/cgroup/test_memcontrol.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c index 9ffacf024bbd..9d370aafd799 100644 --- a/tools/testing/selftests/cgroup/test_memcontrol.c +++ b/tools/testing/selftests/cgroup/test_memcontrol.c @@ -247,7 +247,7 @@ static int cg_test_proc_killed(const char *cgroup) /* * First, this test creates the following hierarchy: - * A memory.min = 50M, memory.max = 200M + * A memory.min = 0, memory.max = 200M * A/B memory.min = 50M, memory.current = 50M * A/B/C memory.min = 75M, memory.current = 50M * A/B/D memory.min = 25M, memory.current = 50M @@ -257,7 +257,7 @@ static int cg_test_proc_killed(const char *cgroup) * Usages are pagecache, but the test keeps a running * process in every leaf cgroup. * Then it creates A/G and creates a significant - * memory pressure in it. + * memory pressure in A. * * A/B memory.current ~= 50M * A/B/C memory.current ~= 29M @@ -335,8 +335,6 @@ static int test_memcg_min(const char *root) (void *)(long)fd); } - if (cg_write(parent[0], "memory.min", "50M")) - goto cleanup; if (cg_write(parent[1], "memory.min", "50M")) goto cleanup; if (cg_write(children[0], "memory.min", "75M")) @@ -404,8 +402,8 @@ static int test_memcg_min(const char *root) /* * First, this test creates the following hierarchy: - * A memory.low = 50M, memory.max = 200M - * A/B memory.low = 50M, memory.current = 50M + * A memory.low = 0, memory.max = 200M + * A/B memory.low = 50M, memory.current = ... * A/B/C memory.low = 75M, memory.current = 50M * A/B/D memory.low = 25M, memory.current = 50M * A/B/E memory.low = 0, memory.current = 50M @@ -490,8 +488,6 @@ static int test_memcg_low(const char *root) goto cleanup; } - if (cg_write(parent[0], "memory.low", "50M")) - goto cleanup; if (cg_write(parent[1], "memory.low", "50M")) goto cleanup; if (cg_write(children[0], "memory.low", "75M"))