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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,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 A837FC2D0A3 for ; Thu, 29 Oct 2020 10:45:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1E479206FA for ; Thu, 29 Oct 2020 10:45:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E479206FA 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 F2E446B0075; Thu, 29 Oct 2020 06:45:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EAA1C6B007D; Thu, 29 Oct 2020 06:45:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C58E26B007B; Thu, 29 Oct 2020 06:45:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0024.hostedemail.com [216.40.44.24]) by kanga.kvack.org (Postfix) with ESMTP id 8CABA6B0074 for ; Thu, 29 Oct 2020 06:45:41 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 2A963181AEF15 for ; Thu, 29 Oct 2020 10:45:41 +0000 (UTC) X-FDA: 77424632082.01.tray07_42120ea2728c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id EAA6510048E09 for ; Thu, 29 Oct 2020 10:45:40 +0000 (UTC) X-HE-Tag: tray07_42120ea2728c X-Filterd-Recvd-Size: 4259 Received: from out30-133.freemail.mail.aliyun.com (out30-133.freemail.mail.aliyun.com [115.124.30.133]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Thu, 29 Oct 2020 10:45:39 +0000 (UTC) X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=alimailimapcm10staff010182156082;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=21;SR=0;TI=SMTPD_---0UDXwDyN_1603968328; Received: from aliy80.localdomain(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UDXwDyN_1603968328) by smtp.aliyun-inc.com(127.0.0.1); Thu, 29 Oct 2020 18:45:33 +0800 From: Alex Shi To: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, kirill@shutemov.name, alexander.duyck@gmail.com, rong.a.chen@intel.com, mhocko@suse.com, vdavydov.dev@gmail.com, shy828301@gmail.com Subject: [PATCH v20 11/20] mm/lru: move lock into lru_note_cost Date: Thu, 29 Oct 2020 18:44:56 +0800 Message-Id: <1603968305-8026-12-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1603968305-8026-1-git-send-email-alex.shi@linux.alibaba.com> References: <1603968305-8026-1-git-send-email-alex.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: We have to move lru_lock into lru_note_cost, since it cycle up on memcg tree, for future per lruvec lru_lock replace. It's a bit ugly and may cost a bit more locking, but benefit from multiple memcg locking could cover the lost. Signed-off-by: Alex Shi Acked-by: Hugh Dickins Cc: Johannes Weiner Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- mm/swap.c | 3 +++ mm/vmscan.c | 4 +--- mm/workingset.c | 2 -- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index 31fc3ebc1079..8798bd899db0 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -268,7 +268,9 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages) { do { unsigned long lrusize; + struct pglist_data *pgdat = lruvec_pgdat(lruvec); + spin_lock_irq(&pgdat->lru_lock); /* Record cost event */ if (file) lruvec->file_cost += nr_pages; @@ -292,6 +294,7 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages) lruvec->file_cost /= 2; lruvec->anon_cost /= 2; } + spin_unlock_irq(&pgdat->lru_lock); } while ((lruvec = parent_lruvec(lruvec))); } diff --git a/mm/vmscan.c b/mm/vmscan.c index 6c6965cbbdef..42bac12aacb4 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1973,19 +1973,17 @@ static int current_may_throttle(void) &stat, false); spin_lock_irq(&pgdat->lru_lock); - move_pages_to_lru(lruvec, &page_list); __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken); - lru_note_cost(lruvec, file, stat.nr_pageout); item = current_is_kswapd() ? PGSTEAL_KSWAPD : PGSTEAL_DIRECT; if (!cgroup_reclaim(sc)) __count_vm_events(item, nr_reclaimed); __count_memcg_events(lruvec_memcg(lruvec), item, nr_reclaimed); __count_vm_events(PGSTEAL_ANON + file, nr_reclaimed); - spin_unlock_irq(&pgdat->lru_lock); + lru_note_cost(lruvec, file, stat.nr_pageout); mem_cgroup_uncharge_list(&page_list); free_unref_page_list(&page_list); diff --git a/mm/workingset.c b/mm/workingset.c index 975a4d2dd02e..d8d2fdf70c24 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -381,9 +381,7 @@ void workingset_refault(struct page *page, void *shadow) if (workingset) { SetPageWorkingset(page); /* XXX: Move to lru_cache_add() when it supports new vs putback */ - spin_lock_irq(&page_pgdat(page)->lru_lock); lru_note_cost_page(page); - spin_unlock_irq(&page_pgdat(page)->lru_lock); inc_lruvec_state(lruvec, WORKINGSET_RESTORE_BASE + file); } out: -- 1.8.3.1