From patchwork Fri Sep 6 14:53:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 11135473 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 B008B112B for ; Fri, 6 Sep 2019 14:53:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7FC2121670 for ; Fri, 6 Sep 2019 14:53:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZXqpLzFz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405638AbfIFOxt (ORCPT ); Fri, 6 Sep 2019 10:53:49 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:40513 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405632AbfIFOxs (ORCPT ); Fri, 6 Sep 2019 10:53:48 -0400 Received: by mail-pf1-f194.google.com with SMTP id x127so4648872pfb.7; Fri, 06 Sep 2019 07:53:48 -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=jkU/gjmufsqRmx2ewcmEVgVxHQ2U0aGjpCpcoEVZSho=; b=ZXqpLzFz2FOqM7wbnFA06GAoTNb6ei5piYez3sF20zkakEGZnTFFMronUD4CttZyiV B17ik99HO+u3uB9zje7wGEb3UmI2D9r1Mu13APQsqu3STpDcZczuhriV5Bd/msAFOAIF bgGhZq9ldDjmVt7XfMbIPeu0sgMh/uz1lXA3QnTknikQQjMZYnfCnd/Bppt0ZxAvDaul pkaWzrx8xude0fUoI7JozT1IH8Jr1LjABPpOtlHCy35j6xq6ex6gETBguZdrYS6cSeHO UueP2Rt58VYp3HAcIWa1hGC0ckNbLS1m3nFaKTorjv+gN1RGPwgFgrBf48c8eXk/4kQZ zNJg== 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=jkU/gjmufsqRmx2ewcmEVgVxHQ2U0aGjpCpcoEVZSho=; b=aMOYngmQwoWvGZk+4UdVyqY5kqvjVjM7wQMZaefCOkQVVShfo6K4oO9rQ2O0P1J1Z2 uNKpjeBkVCS0gZrE2FmXMkuvGWyIUbTexkgi9pxSryKww/985nKSB7Xa5/NIarN7Bg3U Hv6kEoVAGYM+3x6+tlabObwO+ra6TuaageEIOl4lpTQLPonW7vugOkUrDAaUSPXjI0Hy C1yqHF6TrNrVIAMUBdKMVFNga+qDhZLY7mQHj1g5g2N8OZuDv66EYCVa5m4C3CoUXBHf /OKqSLkJLtDnOvtFY2Ja3+5ECVTCTeBe1B6ZvHV4q7fj7h6Zs68R5mp1x/3NbzFrsghD dP/g== X-Gm-Message-State: APjAAAWDE9Liw5Uc+JDdAU3xaSx/jRvOYOQU5IH8KHAWrhZoXp/mBHVC A84r8tDCkGS7H29B7CbyO1o= X-Google-Smtp-Source: APXvYqzgaeC1dp0XTioS4mneCH/3k0tYX6V2gbFnlIyllp1R0fBkI7Tcr0fy2oUOtlXdnP9INbwSag== X-Received: by 2002:a17:90a:bb89:: with SMTP id v9mr2009978pjr.88.1567781627508; Fri, 06 Sep 2019 07:53:47 -0700 (PDT) Received: from localhost.localdomain ([2001:470:b:9c3:9e5c:8eff:fe4f:f2d0]) by smtp.gmail.com with ESMTPSA id e10sm8013207pfh.77.2019.09.06.07.53.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 06 Sep 2019 07:53:47 -0700 (PDT) Subject: [PATCH v8 4/7] mm: Use zone and order instead of free area in free_list manipulators From: Alexander Duyck To: nitesh@redhat.com, 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, virtio-dev@lists.oasis-open.org, osalvador@suse.de Cc: yang.zhang.wz@gmail.com, pagupta@redhat.com, riel@surriel.com, konrad.wilk@oracle.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: Fri, 06 Sep 2019 07:53:46 -0700 Message-ID: <20190906145346.32552.68360.stgit@localhost.localdomain> In-Reply-To: <20190906145213.32552.30160.stgit@localhost.localdomain> References: <20190906145213.32552.30160.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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. Reviewed-by: Dan Williams Reviewed-by: David Hildenbrand Reviewed-by: Pankaj Gupta Signed-off-by: Alexander Duyck --- include/linux/mmzone.h | 70 ++++++++++++++++++++++++++---------------------- mm/page_alloc.c | 30 ++++++++------------- 2 files changed, 49 insertions(+), 51 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 125f300981c6..2ddf1f1971c0 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]); @@ -796,6 +764,44 @@ static inline bool pgdat_is_empty(pg_data_t *pgdat) return !pgdat->node_start_pfn && !pgdat->node_spanned_pages; } +/* 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--; +} + #include void build_all_zonelists(pg_data_t *pgdat); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index a791f2baeeeb..f85dc1561b85 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -921,7 +921,6 @@ 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; @@ -958,7 +957,7 @@ 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; @@ -992,12 +991,11 @@ 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) ? shuffle_pick_tail() : buddy_merge_likely(pfn, buddy_pfn, page, order)) - 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); } /* @@ -2001,13 +1999,11 @@ 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]); @@ -2021,7 +2017,7 @@ 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); } } @@ -2179,8 +2175,8 @@ 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; } @@ -2188,7 +2184,6 @@ 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 @@ -2254,7 +2249,7 @@ 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; } @@ -2370,7 +2365,6 @@ 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; @@ -2441,8 +2435,7 @@ 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); } /* @@ -3113,7 +3106,6 @@ 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; @@ -3139,7 +3131,7 @@ 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 @@ -8560,7 +8552,7 @@ 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);