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=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 72601C433EF for ; Mon, 9 Sep 2019 08:22:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B747D218DE for ; Mon, 9 Sep 2019 08:22:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389225AbfIIIWo (ORCPT ); Mon, 9 Sep 2019 04:22:44 -0400 Received: from mx1.redhat.com ([209.132.183.28]:21345 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726996AbfIIIWn (ORCPT ); Mon, 9 Sep 2019 04:22:43 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0DBA318CB511; Mon, 9 Sep 2019 08:22:43 +0000 (UTC) Received: from [10.36.116.173] (ovpn-116-173.ams2.redhat.com [10.36.116.173]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9CE40600C1; Mon, 9 Sep 2019 08:22:30 +0000 (UTC) Subject: Re: [PATCH v9 3/8] mm: Move set/get_pcppage_migratetype to mmzone.h To: Alexander Duyck , virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, mst@redhat.com, catalin.marinas@arm.com, dave.hansen@intel.com, linux-kernel@vger.kernel.org, willy@infradead.org, mhocko@kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, will@kernel.org, linux-arm-kernel@lists.infradead.org, osalvador@suse.de Cc: yang.zhang.wz@gmail.com, pagupta@redhat.com, konrad.wilk@oracle.com, nitesh@redhat.com, riel@surriel.com, lcapitulino@redhat.com, wei.w.wang@intel.com, aarcange@redhat.com, ying.huang@intel.com, pbonzini@redhat.com, dan.j.williams@intel.com, fengguang.wu@intel.com, alexander.h.duyck@linux.intel.com, kirill.shutemov@linux.intel.com References: <20190907172225.10910.34302.stgit@localhost.localdomain> <20190907172528.10910.37051.stgit@localhost.localdomain> From: David Hildenbrand Openpgp: preference=signencrypt Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190907172528.10910.37051.stgit@localhost.localdomain> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.62]); Mon, 09 Sep 2019 08:22:43 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 07.09.19 19:25, Alexander Duyck wrote: > From: Alexander Duyck > > In order to support page reporting it will be necessary to store and > retrieve the migratetype of a page. To enable that I am moving the set and > get operations for pcppage_migratetype into the mm/internal.h header so > that they can be used outside of the page_alloc.c file. > > Reviewed-by: Dan Williams > Signed-off-by: Alexander Duyck > --- > mm/internal.h | 18 ++++++++++++++++++ > mm/page_alloc.c | 18 ------------------ > 2 files changed, 18 insertions(+), 18 deletions(-) > > diff --git a/mm/internal.h b/mm/internal.h > index 0d5f720c75ab..e4a1a57bbd40 100644 > --- a/mm/internal.h > +++ b/mm/internal.h > @@ -549,6 +549,24 @@ static inline bool is_migrate_highatomic_page(struct page *page) > return get_pageblock_migratetype(page) == MIGRATE_HIGHATOMIC; > } > > +/* > + * A cached value of the page's pageblock's migratetype, used when the page is > + * put on a pcplist. Used to avoid the pageblock migratetype lookup when > + * freeing from pcplists in most cases, at the cost of possibly becoming stale. > + * Also the migratetype set in the page does not necessarily match the pcplist > + * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any > + * other index - this ensures that it will be put on the correct CMA freelist. > + */ > +static inline int get_pcppage_migratetype(struct page *page) > +{ > + return page->index; > +} > + > +static inline void set_pcppage_migratetype(struct page *page, int migratetype) > +{ > + page->index = migratetype; > +} > + > void setup_zone_pageset(struct zone *zone); > extern struct page *alloc_new_node_page(struct page *page, unsigned long node); > #endif /* __MM_INTERNAL_H */ > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 4e4356ba66c7..a791f2baeeeb 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -185,24 +185,6 @@ static int __init early_init_on_free(char *buf) > } > early_param("init_on_free", early_init_on_free); > > -/* > - * A cached value of the page's pageblock's migratetype, used when the page is > - * put on a pcplist. Used to avoid the pageblock migratetype lookup when > - * freeing from pcplists in most cases, at the cost of possibly becoming stale. > - * Also the migratetype set in the page does not necessarily match the pcplist > - * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any > - * other index - this ensures that it will be put on the correct CMA freelist. > - */ > -static inline int get_pcppage_migratetype(struct page *page) > -{ > - return page->index; > -} > - > -static inline void set_pcppage_migratetype(struct page *page, int migratetype) > -{ > - page->index = migratetype; > -} > - > #ifdef CONFIG_PM_SLEEP > /* > * The following functions are used by the suspend/hibernate code to temporarily > > Still have to understand in detail how this will be used, but the change certainly looks ok :) Acked-by: David Hildenbrand -- Thanks, David / dhildenb