From patchwork Tue Jun 11 01:54:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gang He X-Patchwork-Id: 10985761 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A904276 for ; Tue, 11 Jun 2019 01:55:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96EB728671 for ; Tue, 11 Jun 2019 01:55:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 877B728685; Tue, 11 Jun 2019 01:55:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from aserp2130.oracle.com (aserp2130.oracle.com [141.146.126.79]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EE23528671 for ; Tue, 11 Jun 2019 01:55:48 +0000 (UTC) Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x5B1s8ob064173; Tue, 11 Jun 2019 01:55:36 GMT Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp2130.oracle.com with ESMTP id 2t02heja2f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 11 Jun 2019 01:55:36 +0000 Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x5B1tOHI031509 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 11 Jun 2019 01:55:27 GMT Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1haW0S-0000Dh-Ka; Mon, 10 Jun 2019 18:55:24 -0700 Received: from aserp3020.oracle.com ([141.146.126.70]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1haVzh-00005a-Rs for ocfs2-devel@oss.oracle.com; Mon, 10 Jun 2019 18:54:37 -0700 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x5B1s7vk046635 for ; Tue, 11 Jun 2019 01:54:37 GMT Authentication-Results: aserp3010.oracle.com; spf=fail smtp.mailfrom=ghe@suse.com; dmarc=none Received: from userp2040.oracle.com (userp2040.oracle.com [156.151.31.90]) by aserp3020.oracle.com with ESMTP id 2t0p9r1da1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 11 Jun 2019 01:54:36 +0000 Received: from pps.filterd (userp2040.oracle.com [127.0.0.1]) by userp2040.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x5B1sVtY030694 for ; Tue, 11 Jun 2019 01:54:35 GMT Received: from smtp2.provo.novell.com (smtp2.provo.novell.com [137.65.250.81]) by userp2040.oracle.com with ESMTP id 2t20k52vbc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Tue, 11 Jun 2019 01:54:34 +0000 Received: from ghe-pc.suse.asia (prva10-snat226-1.provo.novell.com [137.65.226.35]) by smtp2.provo.novell.com with ESMTP (TLS encrypted); Mon, 10 Jun 2019 19:54:27 -0600 From: Gang He To: mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com Date: Tue, 11 Jun 2019 09:54:12 +0800 Message-Id: <20190611015414.27754-1-ghe@suse.com> X-Mailer: git-send-email 2.12.3 X-PDR: PASS X-Source-IP: 137.65.250.81 X-ServerName: smtp2.provo.novell.com X-Proofpoint-SPF-Result: pass X-Proofpoint-SPF-Record: v=spf1 include:novell.com -all X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9284 signatures=668687 X-Proofpoint-Spam-Details: rule=tap_spam_policies_notspam policy=tap_spam_policies score=0 priorityscore=300 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=180 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=915 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906110010 X-Spam: Clean Cc: linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com Subject: [Ocfs2-devel] [PATCH V4 1/3] ocfs2: add last unlock times in locking_state X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9284 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906110010 X-Virus-Scanned: ClamAV using ClamSMTP ocfs2 file system uses locking_state file under debugfs to dump each ocfs2 file system's dlm lock resources, but the dlm lock resources in memory are becoming more and more after the files were touched by the user. it will become a bit difficult to analyze these dlm lock resource records in locking_state file by the upper scripts, though some files are not active for now, which were accessed long time ago. Then, I'd like to add last pr/ex unlock times in locking_state file for each dlm lock resource record, the the upper scripts can use last unlock time to filter inactive dlm lock resource record. Compared with v1, the main change is to use wall time in microsecond for last pr/ex unlock time. Signed-off-by: Gang He Reviewed-by: Joseph Qi --- fs/ocfs2/dlmglue.c | 18 +++++++++++++++--- fs/ocfs2/ocfs2.h | 1 + 2 files changed, 16 insertions(+), 3 deletions(-) diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index af405586c5b1..3b0e7d399df2 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -474,6 +474,8 @@ static void ocfs2_update_lock_stats(struct ocfs2_lock_res *res, int level, if (ret) stats->ls_fail++; + + stats->ls_last = ktime_to_us(ktime_get_real()); } static inline void ocfs2_track_lock_refresh(struct ocfs2_lock_res *lockres) @@ -3093,8 +3095,10 @@ static void *ocfs2_dlm_seq_next(struct seq_file *m, void *v, loff_t *pos) * - Lock stats printed * New in version 3 * - Max time in lock stats is in usecs (instead of nsecs) + * New in version 4 + * - Add last pr/ex unlock times in usecs */ -#define OCFS2_DLM_DEBUG_STR_VERSION 3 +#define OCFS2_DLM_DEBUG_STR_VERSION 4 static int ocfs2_dlm_seq_show(struct seq_file *m, void *v) { int i; @@ -3145,6 +3149,8 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v) # define lock_max_prmode(_l) ((_l)->l_lock_prmode.ls_max) # define lock_max_exmode(_l) ((_l)->l_lock_exmode.ls_max) # define lock_refresh(_l) ((_l)->l_lock_refresh) +# define lock_last_prmode(_l) ((_l)->l_lock_prmode.ls_last) +# define lock_last_exmode(_l) ((_l)->l_lock_exmode.ls_last) #else # define lock_num_prmode(_l) (0) # define lock_num_exmode(_l) (0) @@ -3155,6 +3161,8 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v) # define lock_max_prmode(_l) (0) # define lock_max_exmode(_l) (0) # define lock_refresh(_l) (0) +# define lock_last_prmode(_l) (0ULL) +# define lock_last_exmode(_l) (0ULL) #endif /* The following seq_print was added in version 2 of this output */ seq_printf(m, "%u\t" @@ -3165,7 +3173,9 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v) "%llu\t" "%u\t" "%u\t" - "%u\t", + "%u\t" + "%llu\t" + "%llu\t", lock_num_prmode(lockres), lock_num_exmode(lockres), lock_num_prmode_failed(lockres), @@ -3174,7 +3184,9 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v) lock_total_exmode(lockres), lock_max_prmode(lockres), lock_max_exmode(lockres), - lock_refresh(lockres)); + lock_refresh(lockres), + lock_last_prmode(lockres), + lock_last_exmode(lockres)); /* End the line */ seq_printf(m, "\n"); diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 1f029fbe8b8d..6f43651f01b3 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -164,6 +164,7 @@ struct ocfs2_lock_stats { /* Storing max wait in usecs saves 24 bytes per inode */ u32 ls_max; /* Max wait in USEC */ + u64 ls_last; /* Last unlock time in USEC */ }; #endif