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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16B8FC07E9B for ; Wed, 21 Jul 2021 06:42:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F161B61175 for ; Wed, 21 Jul 2021 06:42:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234332AbhGUGCD (ORCPT ); Wed, 21 Jul 2021 02:02:03 -0400 Received: from mga06.intel.com ([134.134.136.31]:44388 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234241AbhGUF7N (ORCPT ); Wed, 21 Jul 2021 01:59:13 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10051"; a="272496386" X-IronPort-AV: E=Sophos;i="5.84,257,1620716400"; d="scan'208";a="272496386" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2021 23:39:50 -0700 X-IronPort-AV: E=Sophos;i="5.84,257,1620716400"; d="scan'208";a="511390018" Received: from yhuang6-desk2.sh.intel.com ([10.239.159.119]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2021 23:39:46 -0700 From: Huang Ying To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yang Shi , Dave Hansen , "Huang, Ying" , Yang Shi , Wei Xu , Michal Hocko , Zi Yan , David Rientjes , Dan Williams , David Hildenbrand , Oscar Salvador , Greg Thelen , Keith Busch Subject: [PATCH -V11 5/9] mm/vmscan: add page demotion counter Date: Wed, 21 Jul 2021 14:39:22 +0800 Message-Id: <20210721063926.3024591-5-ying.huang@intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210721063926.3024591-1-ying.huang@intel.com> References: <20210721063926.3024591-1-ying.huang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yang Shi Account the number of demoted pages. Add pgdemote_kswapd and pgdemote_direct VM counters showed in /proc/vmstat. [ daveh: - __count_vm_events() a bit, and made them look at the THP size directly rather than getting data from migrate_pages() ] Link: https://lkml.kernel.org/r/20210715055145.195411-6-ying.huang@intel.com Signed-off-by: Yang Shi Signed-off-by: Dave Hansen Signed-off-by: "Huang, Ying" Reviewed-by: Yang Shi Reviewed-by: Wei Xu Cc: Michal Hocko Cc: Zi Yan Cc: David Rientjes Cc: Dan Williams Cc: David Hildenbrand Cc: Oscar Salvador Cc: Greg Thelen Cc: Keith Busch Signed-off-by: Andrew Morton --- include/linux/vm_event_item.h | 2 ++ mm/vmscan.c | 5 +++++ mm/vmstat.c | 2 ++ 3 files changed, 9 insertions(+) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index ae0dd1948c2b..a185cc75ff52 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -33,6 +33,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGREUSE, PGSTEAL_KSWAPD, PGSTEAL_DIRECT, + PGDEMOTE_KSWAPD, + PGDEMOTE_DIRECT, PGSCAN_KSWAPD, PGSCAN_DIRECT, PGSCAN_DIRECT_THROTTLE, diff --git a/mm/vmscan.c b/mm/vmscan.c index 49d03b5e3c18..90fa026cfa29 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1322,6 +1322,11 @@ static unsigned int demote_page_list(struct list_head *demote_pages, target_nid, MIGRATE_ASYNC, MR_DEMOTION, &nr_succeeded); + if (current_is_kswapd()) + __count_vm_events(PGDEMOTE_KSWAPD, nr_succeeded); + else + __count_vm_events(PGDEMOTE_DIRECT, nr_succeeded); + return nr_succeeded; } diff --git a/mm/vmstat.c b/mm/vmstat.c index 6246bab9fae2..13ff25d0d96a 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1217,6 +1217,8 @@ const char * const vmstat_text[] = { "pgreuse", "pgsteal_kswapd", "pgsteal_direct", + "pgdemote_kswapd", + "pgdemote_direct", "pgscan_kswapd", "pgscan_direct", "pgscan_direct_throttle", -- 2.30.2