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,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 8C74AC04EBE for ; Thu, 8 Oct 2020 11:42:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2099C20B1F for ; Thu, 8 Oct 2020 11:42:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2099C20B1F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 05F5A6B0068; Thu, 8 Oct 2020 07:42:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C4A466B0071; Thu, 8 Oct 2020 07:42:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 90B756B0068; Thu, 8 Oct 2020 07:42:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0187.hostedemail.com [216.40.44.187]) by kanga.kvack.org (Postfix) with ESMTP id 4D5316B0071 for ; Thu, 8 Oct 2020 07:42:10 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id DE7C8181AE868 for ; Thu, 8 Oct 2020 11:42:09 +0000 (UTC) X-FDA: 77348569578.29.crate31_0017546271d7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id 4F14818086CDD for ; Thu, 8 Oct 2020 11:42:09 +0000 (UTC) X-HE-Tag: crate31_0017546271d7 X-Filterd-Recvd-Size: 3117 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf36.hostedemail.com (Postfix) with ESMTP for ; Thu, 8 Oct 2020 11:42:08 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 90728AAC6; Thu, 8 Oct 2020 11:42:07 +0000 (UTC) From: Vlastimil Babka To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Michal Hocko , Pavel Tatashin , David Hildenbrand , Oscar Salvador , Joonsoo Kim , Vlastimil Babka Subject: [PATCH v2 3/7] mm, page_alloc: remove setup_pageset() Date: Thu, 8 Oct 2020 13:41:57 +0200 Message-Id: <20201008114201.18824-4-vbabka@suse.cz> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201008114201.18824-1-vbabka@suse.cz> References: <20201008114201.18824-1-vbabka@suse.cz> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 initialize boot-time pagesets with setup_pageset(), which sets high an= d batch values that effectively disable pcplists. We can remove this wrapper if we just set these values for all pagesets i= n pageset_init(). Non-boot pagesets then subsequently update them to the pr= oper values. No functional change. Signed-off-by: Vlastimil Babka Reviewed-by: David Hildenbrand --- mm/page_alloc.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 463f40b12aca..f827b42a2475 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5899,7 +5899,7 @@ static void build_zonelists(pg_data_t *pgdat) * not check if the processor is online before following the pageset poi= nter. * Other parts of the kernel may not check if the zone is available. */ -static void setup_pageset(struct per_cpu_pageset *p); +static void pageset_init(struct per_cpu_pageset *p); static DEFINE_PER_CPU(struct per_cpu_pageset, boot_pageset); static DEFINE_PER_CPU(struct per_cpu_nodestat, boot_nodestats); =20 @@ -5967,7 +5967,7 @@ build_all_zonelists_init(void) * (a chicken-egg dilemma). */ for_each_possible_cpu(cpu) - setup_pageset(&per_cpu(boot_pageset, cpu)); + pageset_init(&per_cpu(boot_pageset, cpu)); =20 mminit_verify_zonelist(); cpuset_init_current_mems_allowed(); @@ -6286,12 +6286,15 @@ static void pageset_init(struct per_cpu_pageset *= p) pcp =3D &p->pcp; for (migratetype =3D 0; migratetype < MIGRATE_PCPTYPES; migratetype++) INIT_LIST_HEAD(&pcp->lists[migratetype]); -} =20 -static void setup_pageset(struct per_cpu_pageset *p) -{ - pageset_init(p); - pageset_update(&p->pcp, 0, 1); + /* + * Set batch and high values safe for a boot pageset. A true percpu + * pageset's initialization will update them subsequently. Here we don'= t + * need to be as careful as pageset_update() as nobody can access the + * pageset yet. + */ + pcp->high =3D 0; + pcp->batch =3D 1; } =20 /* --=20 2.28.0