From patchwork Tue Oct 1 15:29:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 11169055 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 97F141709 for ; Tue, 1 Oct 2019 15:29:33 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4A95F2133F for ; Tue, 1 Oct 2019 15:29:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="I96R73TB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4A95F2133F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 61C748E0007; Tue, 1 Oct 2019 11:29:32 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 5CBC08E0001; Tue, 1 Oct 2019 11:29:32 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 492318E0007; Tue, 1 Oct 2019 11:29:32 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0161.hostedemail.com [216.40.44.161]) by kanga.kvack.org (Postfix) with ESMTP id 25AC58E0001 for ; Tue, 1 Oct 2019 11:29:32 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id B5417180AD802 for ; Tue, 1 Oct 2019 15:29:31 +0000 (UTC) X-FDA: 75995600142.09.waste11_7039096f6755b X-Spam-Summary: 2,0,0,f764409c1209ccba,d41d8cd98f00b204,alexander.duyck@gmail.com,:virtio-dev@lists.oasis-open.org:kvm@vger.kernel.org:mst@redhat.com:david@redhat.com:dave.hansen@intel.com:linux-kernel@vger.kernel.org:willy@infradead.org:mhocko@kernel.org::akpm@linux-foundation.org:mgorman@techsingularity.net:vbabka@suse.cz:osalvador@suse.de: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:pbonzini@redhat.com:dan.j.williams@intel.com:alexander.h.duyck@linux.intel.com,RULES_HIT:1:2:41:69:152:355:379:560:800:960:965:966:968:973:988:989:1260:1277:1311:1313:1314:1345:1359:1431:1437:1515:1516:1518:1593:1594:1605:1730:1747:1777:1792:2196:2198:2199:2200:2393:2559:2562:2693:2731:2898:2901:3138:3139:3140:3141:3142:3865:3866:3867:3868:3870:3871:3872:3874:4051:4321:4385:4390:4395:4605:5007:6119:6261:6653:6737:6742:7576:7974:8603:8957:9010:9036:9413:9592:10004:11026:11473:1 1658:119 X-HE-Tag: waste11_7039096f6755b X-Filterd-Recvd-Size: 12338 Received: from mail-pg1-f194.google.com (mail-pg1-f194.google.com [209.85.215.194]) by imf28.hostedemail.com (Postfix) with ESMTP for ; Tue, 1 Oct 2019 15:29:31 +0000 (UTC) Received: by mail-pg1-f194.google.com with SMTP id a3so9858364pgm.13 for ; Tue, 01 Oct 2019 08:29:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:date:message-id:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=0K2FpVpCh6PKnNggfKA86tN6UUW5hrFsV1d9U5M4+WY=; b=I96R73TBFPYE44iKujpqzQWQK3J8yF4xWvXJLUZpYgjqZvdTkYZpFe7vlHJ4Fb7KI6 UuJK9c5wNUsBgx0I7WAQ3rgO0/SYkDjNjGftUOgU+zaW2J5MoetrZBgK+PWZTIBEt+wb XiaLuvVJSuHzlQFiqch4KFwvyEqunOOx0DgZ0tnzXtVjP7PS4bJBeISmaP3ilz4tSOgy iheasFrAUAnNQYx8TwPfST2krQ2e9g2C6u9oTdKptAPFJzkhs57QsKKQ7Dt1TlrAR3fb NDWVMDZG0hbf1+68yU177bjcto+r0FdQOXZLMzTGoineWqxyuCwuLFL7+kmHkR1Am6pn QpAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:date:message-id:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=0K2FpVpCh6PKnNggfKA86tN6UUW5hrFsV1d9U5M4+WY=; b=QjDAHmqPKn4ASxoOWlo59guzsJNMFAGoVXTF2UnADRnNHgkdLR4kL+kTULaqiGqmbJ fthZsstyZxPtc8opAO7TwNUwhCpD0YxpLuK2qMcQTK7aXwQZ7QcISCmkQqA/HrJymegG WSBsHElIy3erNOcOpOpqE2JN1hop7MQizoNMbx+gRKLG/VcTk9yPs4V8EM88sfrvlM4N ExbE3vX5KWSZkFK7QHIrlOyzuXIC6uH2uqsieChIEcJQDhOE5X6GZUH1KsjzFbyoRy/1 VICG1qzuAzd8tUxr1UIfPDrXas7bTD2zb0zYWswnkhhaRwlaLFPOa+1WkTztXUpvVJOR acPg== X-Gm-Message-State: APjAAAXHwSxnNlZQPI4bNUEfgJY3G68zVRftgBtB20j5wLWE/nOBce/a xcE9XPGtnDCWIrVRg6ZVXNs= X-Google-Smtp-Source: APXvYqzTm3Qna10SfQt1BUH9kl+jhh/w0RXiIoM5A7J0PLLmuOHpDv/3dxL7BXzT72+mpBUZS6KrjQ== X-Received: by 2002:a62:4e09:: with SMTP id c9mr29034017pfb.152.1569943769921; Tue, 01 Oct 2019 08:29:29 -0700 (PDT) Received: from localhost.localdomain ([2001:470:b:9c3:9e5c:8eff:fe4f:f2d0]) by smtp.gmail.com with ESMTPSA id z25sm15220217pfn.7.2019.10.01.08.29.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 Oct 2019 08:29:29 -0700 (PDT) Subject: [PATCH v11 2/6] mm: Use zone and order instead of free area in free_list manipulators From: Alexander Duyck To: virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, mst@redhat.com, david@redhat.com, dave.hansen@intel.com, linux-kernel@vger.kernel.org, willy@infradead.org, mhocko@kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, mgorman@techsingularity.net, vbabka@suse.cz, 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, pbonzini@redhat.com, dan.j.williams@intel.com, alexander.h.duyck@linux.intel.com Date: Tue, 01 Oct 2019 08:29:28 -0700 Message-ID: <20191001152928.27008.8178.stgit@localhost.localdomain> In-Reply-To: <20191001152441.27008.99285.stgit@localhost.localdomain> References: <20191001152441.27008.99285.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 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: From: Alexander Duyck In order to enable the use of the zone from the list manipulator functions I will need access to the zone pointer. As it turns out most of the accessors were always just being directly passed &zone->free_area[order] anyway so it would make sense to just fold that into the function itself and pass the zone and order as arguments instead of the free area. In order to be able to reference the zone we need to move the declaration of the functions down so that we have the zone defined before we define the list manipulation functions. Since the functions are only used in the file mm/page_alloc.c we can just move them there to reduce noise in the header. Reviewed-by: Dan Williams Reviewed-by: David Hildenbrand Reviewed-by: Pankaj Gupta Signed-off-by: Alexander Duyck Reported-by: kernel test robot --- include/linux/mmzone.h | 32 ----------------------- mm/page_alloc.c | 68 +++++++++++++++++++++++++++++++++++------------- 2 files changed, 49 insertions(+), 51 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 125f300981c6..270a7b493174 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -100,29 +100,6 @@ struct free_area { unsigned long nr_free; }; -/* Used for pages not on another list */ -static inline void add_to_free_area(struct page *page, struct free_area *area, - int migratetype) -{ - list_add(&page->lru, &area->free_list[migratetype]); - area->nr_free++; -} - -/* Used for pages not on another list */ -static inline void add_to_free_area_tail(struct page *page, struct free_area *area, - int migratetype) -{ - list_add_tail(&page->lru, &area->free_list[migratetype]); - area->nr_free++; -} - -/* Used for pages which are on another list */ -static inline void move_to_free_area(struct page *page, struct free_area *area, - int migratetype) -{ - list_move(&page->lru, &area->free_list[migratetype]); -} - static inline struct page *get_page_from_free_area(struct free_area *area, int migratetype) { @@ -130,15 +107,6 @@ static inline struct page *get_page_from_free_area(struct free_area *area, struct page, lru); } -static inline void del_page_from_free_area(struct page *page, - struct free_area *area) -{ - list_del(&page->lru); - __ClearPageBuddy(page); - set_page_private(page, 0); - area->nr_free--; -} - static inline bool free_area_empty(struct free_area *area, int migratetype) { return list_empty(&area->free_list[migratetype]); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index bc8de8d9416d..5e142047f730 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -877,6 +877,44 @@ static inline struct capture_control *task_capc(struct zone *zone) } #endif /* CONFIG_COMPACTION */ +/* Used for pages not on another list */ +static inline void add_to_free_list(struct page *page, struct zone *zone, + unsigned int order, int migratetype) +{ + struct free_area *area = &zone->free_area[order]; + + list_add(&page->lru, &area->free_list[migratetype]); + area->nr_free++; +} + +/* Used for pages not on another list */ +static inline void add_to_free_list_tail(struct page *page, struct zone *zone, + unsigned int order, int migratetype) +{ + struct free_area *area = &zone->free_area[order]; + + list_add_tail(&page->lru, &area->free_list[migratetype]); + area->nr_free++; +} + +/* Used for pages which are on another list */ +static inline void move_to_free_list(struct page *page, struct zone *zone, + unsigned int order, int migratetype) +{ + struct free_area *area = &zone->free_area[order]; + + list_move(&page->lru, &area->free_list[migratetype]); +} + +static inline void del_page_from_free_list(struct page *page, struct zone *zone, + unsigned int order) +{ + list_del(&page->lru); + __ClearPageBuddy(page); + set_page_private(page, 0); + zone->free_area[order].nr_free--; +} + /* * If this is not the largest possible page, check if the buddy * of the next-highest order is free. If it is, it's possible @@ -939,7 +977,6 @@ static inline void __free_one_page(struct page *page, struct capture_control *capc = task_capc(zone); unsigned long uninitialized_var(buddy_pfn); unsigned long combined_pfn; - struct free_area *area; unsigned int max_order; struct page *buddy; bool to_tail; @@ -977,7 +1014,7 @@ static inline void __free_one_page(struct page *page, if (page_is_guard(buddy)) clear_page_guard(zone, buddy, order, migratetype); else - del_page_from_free_area(buddy, &zone->free_area[order]); + del_page_from_free_list(buddy, zone, order); combined_pfn = buddy_pfn & pfn; page = page + (combined_pfn - pfn); pfn = combined_pfn; @@ -1011,16 +1048,15 @@ static inline void __free_one_page(struct page *page, done_merging: set_page_order(page, order); - area = &zone->free_area[order]; if (is_shuffle_order(order)) to_tail = shuffle_pick_tail(); else to_tail = buddy_merge_likely(pfn, buddy_pfn, page, order); if (to_tail) - add_to_free_area_tail(page, area, migratetype); + add_to_free_list_tail(page, zone, order, migratetype); else - add_to_free_area(page, area, migratetype); + add_to_free_list(page, zone, order, migratetype); } /* @@ -2024,13 +2060,11 @@ void __init init_cma_reserved_pageblock(struct page *page) * -- nyc */ static inline void expand(struct zone *zone, struct page *page, - int low, int high, struct free_area *area, - int migratetype) + int low, int high, int migratetype) { unsigned long size = 1 << high; while (high > low) { - area--; high--; size >>= 1; VM_BUG_ON_PAGE(bad_range(zone, &page[size]), &page[size]); @@ -2044,7 +2078,7 @@ static inline void expand(struct zone *zone, struct page *page, if (set_page_guard(zone, &page[size], high, migratetype)) continue; - add_to_free_area(&page[size], area, migratetype); + add_to_free_list(&page[size], zone, high, migratetype); set_page_order(&page[size], high); } } @@ -2202,8 +2236,8 @@ struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, page = get_page_from_free_area(area, migratetype); if (!page) continue; - del_page_from_free_area(page, area); - expand(zone, page, order, current_order, area, migratetype); + del_page_from_free_list(page, zone, current_order); + expand(zone, page, order, current_order, migratetype); set_pcppage_migratetype(page, migratetype); return page; } @@ -2211,7 +2245,6 @@ struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, return NULL; } - /* * This array describes the order lists are fallen back to when * the free lists for the desirable migrate type are depleted @@ -2277,7 +2310,7 @@ static int move_freepages(struct zone *zone, VM_BUG_ON_PAGE(page_zone(page) != zone, page); order = page_order(page); - move_to_free_area(page, &zone->free_area[order], migratetype); + move_to_free_list(page, zone, order, migratetype); page += 1 << order; pages_moved += 1 << order; } @@ -2393,7 +2426,6 @@ static void steal_suitable_fallback(struct zone *zone, struct page *page, unsigned int alloc_flags, int start_type, bool whole_block) { unsigned int current_order = page_order(page); - struct free_area *area; int free_pages, movable_pages, alike_pages; int old_block_type; @@ -2464,8 +2496,7 @@ static void steal_suitable_fallback(struct zone *zone, struct page *page, return; single_page: - area = &zone->free_area[current_order]; - move_to_free_area(page, area, start_type); + move_to_free_list(page, zone, current_order, start_type); } /* @@ -3136,7 +3167,6 @@ void split_page(struct page *page, unsigned int order) int __isolate_free_page(struct page *page, unsigned int order) { - struct free_area *area = &page_zone(page)->free_area[order]; unsigned long watermark; struct zone *zone; int mt; @@ -3162,7 +3192,7 @@ int __isolate_free_page(struct page *page, unsigned int order) /* Remove page from free list */ - del_page_from_free_area(page, area); + del_page_from_free_list(page, zone, order); /* * Set the pageblock if the isolated page is at least half of a @@ -8605,7 +8635,7 @@ void zone_pcp_reset(struct zone *zone) pr_info("remove from free list %lx %d %lx\n", pfn, 1 << order, end_pfn); #endif - del_page_from_free_area(page, &zone->free_area[order]); + del_page_from_free_list(page, zone, order); for (i = 0; i < (1 << order); i++) SetPageReserved((page+i)); pfn += (1 << order);