From patchwork Tue Oct 25 17:36:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 13019601 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D51FC38A2D for ; Tue, 25 Oct 2022 17:37:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231546AbiJYRhB (ORCPT ); Tue, 25 Oct 2022 13:37:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231429AbiJYRg7 (ORCPT ); Tue, 25 Oct 2022 13:36:59 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34EC3D64; Tue, 25 Oct 2022 10:36:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D9D7BB81E5A; Tue, 25 Oct 2022 17:36:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 046A2C43141; Tue, 25 Oct 2022 17:36:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666719416; bh=4NBEQVWjkZzG2RZ0IZhDEcaAZKCJsWQ5ei6FDrh1eE4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D13bipI5+ZFOlmA3P+OZjs7yvhTB1CxtPiSEjR/7eMpoGmFaJlnmC1ahl0M6VzJ2b jzRwMLGRPLeeuI1mE/u6kGnFuKsmODPXEkwnOJ2p3h7moHkT+/Is837OF5KYofdczS N7NQXo1Sipv9kc4PzBgnOGGPh1ce/xZFIxI83TXJj3DSyT8+z0pkWXOHGdDXNpA7J6 jyYdXgaYBRg6mtgKKzq22VwxIA76VBnvpnAJEO/j2ps/61WVED1Su5fagGUzlO/mZd PvCuTm5s7xP/RTRQPcjCc3+h/+7qY1/4fvqSrOpkUUHcyfFSN3HTT8MO/qpgHGY6tP SQ+BW/725/C5Q== From: SeongJae Park To: Andrew Morton Cc: Shuah Khan , linux-kernel@vger.kernel.org, damon@lists.linux.dev, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, SeongJae Park Subject: [PATCH 2/4] selftests/damon: add tests for DAMON_RECLAIM's enabled parameter Date: Tue, 25 Oct 2022 17:36:48 +0000 Message-Id: <20221025173650.90624-3-sj@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221025173650.90624-1-sj@kernel.org> References: <20221025173650.90624-1-sj@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Adds simple test cases for DAMON_RECLAIM's 'enabled' parameter. Those tests are focusing on the synchronous behavior of DAMON_RECLAIM enabling and disabling. Signed-off-by: SeongJae Park --- tools/testing/selftests/damon/Makefile | 1 + tools/testing/selftests/damon/reclaim.sh | 42 ++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100755 tools/testing/selftests/damon/reclaim.sh diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile index a1fa2eff8192..dbbf18cb3e6b 100644 --- a/tools/testing/selftests/damon/Makefile +++ b/tools/testing/selftests/damon/Makefile @@ -8,5 +8,6 @@ TEST_PROGS = debugfs_attrs.sh debugfs_schemes.sh debugfs_target_ids.sh TEST_PROGS += debugfs_empty_targets.sh debugfs_huge_count_read_write.sh TEST_PROGS += debugfs_duplicate_context_creation.sh TEST_PROGS += sysfs.sh +TEST_PROGS += reclaim.sh include ../lib.mk diff --git a/tools/testing/selftests/damon/reclaim.sh b/tools/testing/selftests/damon/reclaim.sh new file mode 100755 index 000000000000..78dbc2334cbe --- /dev/null +++ b/tools/testing/selftests/damon/reclaim.sh @@ -0,0 +1,42 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +if [ $EUID -ne 0 ] +then + echo "Run as root" + exit $ksft_skip +fi + +damon_reclaim_enabled="/sys/module/damon_reclaim/parameters/enabled" +if [ ! -f "$damon_reclaim_enabled" ] +then + echo "No 'enabled' file. Maybe DAMON_RECLAIM not built" + exit $ksft_skip +fi + +nr_kdamonds=$(pgrep kdamond | wc -l) +if [ "$nr_kdamonds" -ne 0 ] +then + echo "Another kdamond is running" + exit $ksft_skip +fi + +echo Y > "$damon_reclaim_enabled" + +nr_kdamonds=$(pgrep kdamond | wc -l) +if [ "$nr_kdamonds" -ne 1 ] +then + echo "kdamond is not turned on" + exit 1 +fi + +echo N > "$damon_reclaim_enabled" +nr_kdamonds=$(pgrep kdamond | wc -l) +if [ "$nr_kdamonds" -ne 0 ] +then + echo "kdamond is not turned off" + exit 1 +fi