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 picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8C2EC77B73 for ; Fri, 21 Apr 2023 01:27:30 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id E7D883CBFE2 for ; Fri, 21 Apr 2023 03:27:28 +0200 (CEST) Received: from in-2.smtp.seeweb.it (in-2.smtp.seeweb.it [IPv6:2001:4b78:1:20::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 622743CBFE4 for ; Fri, 21 Apr 2023 03:27:13 +0200 (CEST) Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) (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-2.smtp.seeweb.it (Postfix) with ESMTPS id 7766A6009F1 for ; Fri, 21 Apr 2023 03:27:11 +0200 (CEST) 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 5F5EE1FDD6; Fri, 21 Apr 2023 01:27:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1682040431; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=av7O8wqA5l5acpG9v4iebekjhlfuxbzl44uj2XY0t4c=; b=Wzi8nQ7sHtrr8x7IG/ny3h5v0ZtxPHKCgLLmo8tm9rzKU3V5Fcu+pC0/1O8jwEXTISZGgQ pMzdvZOEhZZy0UBzVIj2KzKdHFjmgoj7QXcQiD/UgluvG408Ox36ZnZfaf4AG6OMZZdMka OnYzM+Cr7muKkIjpXM4gEmjWuZOl/5s= 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 B25F613584; Fri, 21 Apr 2023 01:27:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id QJY1IW7mQWT7eAAAMHmgww (envelope-from ); Fri, 21 Apr 2023 01:27:10 +0000 To: ltp@lists.linux.it Date: Thu, 20 Apr 2023 21:26:42 -0400 Message-Id: <20230421012642.16625-3-wegao@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230421012642.16625-1-wegao@suse.com> References: <20230419151849.13152-1-wegao@suse.com> <20230421012642.16625-1-wegao@suse.com> MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.102.4 at in-2.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v8 2/2] tst_cgroup.c: Add a cgroup pseudo controller 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: , From: Wei Gao via ltp Reply-To: Wei Gao Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" For new test case such as kill01.c no need specific controller, it just need LTP cgroup library start work, so we need add a "cgroup" pseudo controller. Signed-off-by: Wei Gao --- lib/tst_cgroup.c | 54 +++++++++++++++++++++++++++++++----------------- 1 file changed, 35 insertions(+), 19 deletions(-) diff --git a/lib/tst_cgroup.c b/lib/tst_cgroup.c index 77575431d..6a70bf4b4 100644 --- a/lib/tst_cgroup.c +++ b/lib/tst_cgroup.c @@ -94,9 +94,10 @@ enum cgroup_ctrl_indx { CTRL_MISC, CTRL_PERFEVENT, CTRL_DEBUG, - CTRL_RDMA + CTRL_RDMA, + CTRL_PSEUDO }; -#define CTRLS_MAX CTRL_RDMA +#define CTRLS_MAX CTRL_PSEUDO /* At most we can have one cgroup V1 tree for each controller and one * (empty) v2 tree. @@ -259,6 +260,10 @@ static const struct cgroup_file rdma_ctrl_files[] = { { } }; +static const struct cgroup_file cgroup_pseudo_ctrl_files[] = { + { } +}; + #define CTRL_NAME_MAX 31 #define CGROUP_CTRL_MEMBER(x, y)[y] = { .ctrl_name = #x, .files = \ x ## _ctrl_files, .ctrl_indx = y, NULL, 0 } @@ -282,6 +287,7 @@ static struct cgroup_ctrl controllers[] = { CGROUP_CTRL_MEMBER(perf_event, CTRL_PERFEVENT), CGROUP_CTRL_MEMBER(debug, CTRL_DEBUG), CGROUP_CTRL_MEMBER(rdma, CTRL_RDMA), + CGROUP_CTRL_MEMBER(cgroup_pseudo, CTRL_PSEUDO), { } }; @@ -798,6 +804,7 @@ void tst_cg_require(const char *const ctrl_name, const char *const cgsc = "cgroup.subtree_control"; struct cgroup_ctrl *const ctrl = cgroup_find_ctrl(ctrl_name); struct cgroup_root *root; + int cgroup_pseudo = !strcmp(ctrl->ctrl_name, "cgroup_pseudo"); if (!ctrl) { tst_brk(TBROK, "'%s' controller is unknown to LTP", ctrl_name); @@ -827,6 +834,9 @@ void tst_cg_require(const char *const ctrl_name, if (options->needs_ver != TST_CG_V2) cgroup_mount_v1(ctrl); + if (cgroup_pseudo) + ctrl->ctrl_root = roots; + if (!ctrl->ctrl_root) { tst_brk(TCONF, "'%s' controller required, but not available", @@ -849,13 +859,15 @@ mkdirs: ctrl->ctrl_name); } - if (cgroup_ctrl_on_v2(ctrl)) { - if (root->we_mounted_it) { - SAFE_FILE_PRINTFAT(root->mnt_dir.dir_fd, - cgsc, "+%s", ctrl->ctrl_name); - } else { - tst_file_printfat(root->mnt_dir.dir_fd, - cgsc, "+%s", ctrl->ctrl_name); + if (!cgroup_pseudo) { + if (cgroup_ctrl_on_v2(ctrl)) { + if (root->we_mounted_it) { + SAFE_FILE_PRINTFAT(root->mnt_dir.dir_fd, + cgsc, "+%s", ctrl->ctrl_name); + } else { + tst_file_printfat(root->mnt_dir.dir_fd, + cgsc, "+%s", ctrl->ctrl_name); + } } } @@ -864,15 +876,17 @@ mkdirs: else root->ltp_dir.ctrl_field |= root->mnt_dir.ctrl_field; - if (cgroup_ctrl_on_v2(ctrl)) { - SAFE_FILE_PRINTFAT(root->ltp_dir.dir_fd, - cgsc, "+%s", ctrl->ctrl_name); - } else { - SAFE_FILE_PRINTFAT(root->ltp_dir.dir_fd, - "cgroup.clone_children", "%d", 1); + if (!cgroup_pseudo) { + if (cgroup_ctrl_on_v2(ctrl)) { + SAFE_FILE_PRINTFAT(root->ltp_dir.dir_fd, + cgsc, "+%s", ctrl->ctrl_name); + } else { + SAFE_FILE_PRINTFAT(root->ltp_dir.dir_fd, + "cgroup.clone_children", "%d", 1); - if (ctrl->ctrl_indx == CTRL_CPUSET) - cgroup_copy_cpuset(root); + if (ctrl->ctrl_indx == CTRL_CPUSET) + cgroup_copy_cpuset(root); + } } cgroup_dir_mk(&root->ltp_dir, cgroup_ltp_drain_dir, &root->drain_dir); @@ -1050,8 +1064,10 @@ static void cgroup_group_add_dir(const struct tst_cg_group *const parent, if (!parent || dir->dir_root->ver == TST_CG_V1) continue; - SAFE_CG_PRINTF(parent, "cgroup.subtree_control", - "+%s", ctrl->ctrl_name); + if (strcmp(ctrl->ctrl_name, "cgroup_pseudo")) { + SAFE_CG_PRINTF(parent, "cgroup.subtree_control", + "+%s", ctrl->ctrl_name); + } } for (i = 0; cg->dirs[i]; i++) -- 2.35.3 -- Mailing list info: https://lists.linux.it/listinfo/ltp