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=-8.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 81982C31E45 for ; Thu, 13 Jun 2019 23:30:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 40B1020896 for ; Thu, 13 Jun 2019 23:30:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40B1020896 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1FE238E0005; Thu, 13 Jun 2019 19:30:17 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 163088E0002; Thu, 13 Jun 2019 19:30:17 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ED3268E0005; Thu, 13 Jun 2019 19:30:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) by kanga.kvack.org (Postfix) with ESMTP id B259C8E0002 for ; Thu, 13 Jun 2019 19:30:16 -0400 (EDT) Received: by mail-pl1-f198.google.com with SMTP id 91so459835pla.7 for ; Thu, 13 Jun 2019 16:30:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references; bh=hDNydRbA83jbliMn/y7MvMj1b1V45KErjlHbPtM+FvQ=; b=gqEKgUXc7RlZ2jOgyjHEkERyY+7u0w/JcuaogcI4R4wJm1EHqRNbJctnd77iH4M2DW 7IYLs4OcANDbezdeW6q+h+AcfwbL9yBVzqw1dbkhoMd1UPBrVhtu/vBvbto6cEryT+uz S1HWknVe0xdgZMoIlX2lcc3x44JR3IC2m650mfY7r2tWlgtVEevuC+Ah0JTVnvH7QXSe ZCQgyvQ8+zQJuHAzCMSG+/URT0NPCvZQIjlmH5q1dX6kSxKXfBNcye652gJbK1jAOuOj YXOP0qjLcJVpA68T1iehvnSa63y6WyM6WrQDLi1pBvUgFhki6rLdyHCVknH6EjT+bm2p ZjaA== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 47.88.44.36 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com X-Gm-Message-State: APjAAAUAF8h/c7UdDnj/kYHjZKFufIJrHQmxa9556hlp95KvpavoEN10 JoGTU6tdgwuc49XrYh8RcjB1V6pVT68Iley63HUN4sECurAIb8mmQuzMIQTDWmKigP+KBXLSNaf PlLZV4f6sn0tRGcJ+3WQM2qlNvbpt2kAAO4yvpNY0Ixvmxe0bAtbFluohIG7MpaByFQ== X-Received: by 2002:a63:5c41:: with SMTP id n1mr1190693pgm.69.1560468616259; Thu, 13 Jun 2019 16:30:16 -0700 (PDT) X-Google-Smtp-Source: APXvYqyOhG3yVslHWmRzZpUEy+q/tRec8E14XSfrUbMHfYvndrU74vyHKdlsxIsmsrRmslTxBmfg X-Received: by 2002:a63:5c41:: with SMTP id n1mr1190599pgm.69.1560468615102; Thu, 13 Jun 2019 16:30:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560468615; cv=none; d=google.com; s=arc-20160816; b=uS3NgFzS3/fbp5dmkJj6HsvwG/+6ieZcMnOTX+iK8pwz4PS+EbZksQYQAF5XGu4g97 5PCh022GrBRKCHgGsnvuWRMJj4+GjJStjOaWmfmFT+8JEYr2R57N3nhXfMSIwpyZ1fZ/ LaiWYH7KjVKTWSkoWgxJefaE9R626Bn5n3Mhn2xtBRbEIvToe/RDIYjLVErssn1X47fN 979qA0yoxARdjXrqwJZeYuTqClRk9rwPW/rr1sDas+/B/XWVx8Ye6oEgsDIbSg60Xwvb DFZv7RG/6kduq9yHvcSCcmyZ9lQBV0fPrdVtE1ucRLcmVPBtMX/w+Iyi49muF/KwYHfi JYsA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from; bh=hDNydRbA83jbliMn/y7MvMj1b1V45KErjlHbPtM+FvQ=; b=1Ibqrhysi8nPXMm64293NS89AZCjGawWr+HBh2FdcmokHBOQqbCE7J3Jx7Q3RU2Ntq Vg77dMGkcWHWeZQo8x3DaqGyb1bHhdk15+juZZtJc81F1BLTavhvkYNEqxgeS4rbW4R5 xKWMcqm0Y0xILjvjuTxlImDUtdghN7ih0SDuIguV6qGj+1vwOO8Vtr/6kJu4BPextF5g YjIsUwPPlf8uHWmiZXDTJ53rpq9BHkJlNMjS1xKzDr3ZvSbzHRtwdu5ckg9ZMJ/O7MNN yyq7jo+8Xpco4n6RfzXXv80//86SimslIIyTwZnSAApnyu4gR6UQuZDITlB/xWWiUgFr hRdQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 47.88.44.36 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: from out4436.biz.mail.alibaba.com (out4436.biz.mail.alibaba.com. [47.88.44.36]) by mx.google.com with ESMTPS id b69si749875pjc.104.2019.06.13.16.30.13 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 13 Jun 2019 16:30:15 -0700 (PDT) Received-SPF: pass (google.com: domain of yang.shi@linux.alibaba.com designates 47.88.44.36 as permitted sender) client-ip=47.88.44.36; Authentication-Results: mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 47.88.44.36 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R701e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=yang.shi@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0TU6DYEz_1560468591; Received: from e19h19392.et15sqa.tbsite.net(mailfrom:yang.shi@linux.alibaba.com fp:SMTPD_---0TU6DYEz_1560468591) by smtp.aliyun-inc.com(127.0.0.1); Fri, 14 Jun 2019 07:30:01 +0800 From: Yang Shi To: mhocko@suse.com, mgorman@techsingularity.net, riel@surriel.com, hannes@cmpxchg.org, akpm@linux-foundation.org, dave.hansen@intel.com, keith.busch@intel.com, dan.j.williams@intel.com, fengguang.wu@intel.com, fan.du@intel.com, ying.huang@intel.com, ziy@nvidia.com Cc: yang.shi@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [v3 PATCH 8/9] mm: vmscan: add page demotion counter Date: Fri, 14 Jun 2019 07:29:36 +0800 Message-Id: <1560468577-101178-9-git-send-email-yang.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1560468577-101178-1-git-send-email-yang.shi@linux.alibaba.com> References: <1560468577-101178-1-git-send-email-yang.shi@linux.alibaba.com> 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: Account the number of demoted pages into reclaim_state->nr_demoted. Add pgdemote_kswapd and pgdemote_direct VM counters showed in /proc/vmstat. Signed-off-by: Yang Shi --- include/linux/vm_event_item.h | 2 ++ include/linux/vmstat.h | 1 + mm/vmscan.c | 8 ++++++++ mm/vmstat.c | 2 ++ 4 files changed, 13 insertions(+) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 47a3441..499a3aa 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -32,6 +32,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGREFILL, PGSTEAL_KSWAPD, PGSTEAL_DIRECT, + PGDEMOTE_KSWAPD, + PGDEMOTE_DIRECT, PGSCAN_KSWAPD, PGSCAN_DIRECT, PGSCAN_DIRECT_THROTTLE, diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index bdeda4b..00d53d4 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -29,6 +29,7 @@ struct reclaim_stat { unsigned nr_activate[2]; unsigned nr_ref_keep; unsigned nr_unmap_fail; + unsigned nr_demoted; }; #ifdef CONFIG_VM_EVENT_COUNTERS diff --git a/mm/vmscan.c b/mm/vmscan.c index 9ec55d7..f65cd45 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -130,6 +130,7 @@ struct scan_control { unsigned int immediate; unsigned int file_taken; unsigned int taken; + unsigned int demoted; } nr; }; @@ -1582,6 +1583,12 @@ static unsigned long shrink_page_list(struct list_head *page_list, nr_reclaimed += nr_succeeded; + stat->nr_demoted = nr_succeeded; + if (current_is_kswapd()) + __count_vm_events(PGDEMOTE_KSWAPD, stat->nr_demoted); + else + __count_vm_events(PGDEMOTE_DIRECT, stat->nr_demoted); + if (err) { if (err == -ENOMEM) set_bit(PGDAT_CONTENDED, @@ -2097,6 +2104,7 @@ static int current_may_throttle(void) sc->nr.unqueued_dirty += stat.nr_unqueued_dirty; sc->nr.writeback += stat.nr_writeback; sc->nr.immediate += stat.nr_immediate; + sc->nr.demoted += stat.nr_demoted; sc->nr.taken += nr_taken; if (file) sc->nr.file_taken += nr_taken; diff --git a/mm/vmstat.c b/mm/vmstat.c index d876ac0..eee29a9 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1192,6 +1192,8 @@ int fragmentation_index(struct zone *zone, unsigned int order) "pgrefill", "pgsteal_kswapd", "pgsteal_direct", + "pgdemote_kswapd", + "pgdemote_direct", "pgscan_kswapd", "pgscan_direct", "pgscan_direct_throttle", -- 1.8.3.1