From patchwork Thu Jul 15 19:59:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12380889 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B1DD9C636C8 for ; Thu, 15 Jul 2021 20:09:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FE4D61370 for ; Thu, 15 Jul 2021 20:09:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242890AbhGOUM3 (ORCPT ); Thu, 15 Jul 2021 16:12:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47276 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242652AbhGOUMR (ORCPT ); Thu, 15 Jul 2021 16:12:17 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F7F7C06175F for ; Thu, 15 Jul 2021 13:09:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=FsEzydEejG+qhxdXn0JDq99IGXxuSEgNM7cW1AjCAGU=; b=q4U5LKlxTbVHTvzQINA5kayVuQ ks8K8csEtPEzTrFRMRt5KOp+oalvX6lXpymi+9wZiQmIsBMO3PrT5zubd2YDt7X6xXnoN1XeCdEqo HcFSKqkH6qVQbqBTq9/Vq1m91iel92WA0rWaTw0KXDJ2qKmmmKtLJXlh4b46dZ8qmUXxUhVMfA3tG 00+1uYc8q46KKVby6rMhMMFtbjzqQvoGgfWYcBbyI0zrPvtWfZdxtl9bPw6v6OW8j7Fczb1zWHMmx YTENBHvWnVQAZu0SNDf0Ie4hiNc2Ua6TfAa1vBosO6TuQKg88I8cCaQs9b/KGR6xnFk4MdKOOP4I6 RNBiKG2A==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m47eB-003mvB-Ho; Thu, 15 Jul 2021 20:08:12 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , Christoph Hellwig Subject: [PATCH v14 07/39] mm/swap: Add folio_activate() Date: Thu, 15 Jul 2021 20:59:58 +0100 Message-Id: <20210715200030.899216-8-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715200030.899216-1-willy@infradead.org> References: <20210715200030.899216-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This replaces activate_page() and eliminates lots of calls to compound_head(). Saves net 118 bytes of kernel text. There are still some redundant calls to page_folio() here which will be removed when pagevec_lru_move_fn() is converted to use folios. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- include/trace/events/pagemap.h | 14 +++++------- mm/swap.c | 41 ++++++++++++++++++---------------- 2 files changed, 28 insertions(+), 27 deletions(-) diff --git a/include/trace/events/pagemap.h b/include/trace/events/pagemap.h index 92ad176210ff..1fd0185d66e8 100644 --- a/include/trace/events/pagemap.h +++ b/include/trace/events/pagemap.h @@ -60,23 +60,21 @@ TRACE_EVENT(mm_lru_insertion, TRACE_EVENT(mm_lru_activate, - TP_PROTO(struct page *page), + TP_PROTO(struct folio *folio), - TP_ARGS(page), + TP_ARGS(folio), TP_STRUCT__entry( - __field(struct page *, page ) + __field(struct folio *, folio ) __field(unsigned long, pfn ) ), TP_fast_assign( - __entry->page = page; - __entry->pfn = page_to_pfn(page); + __entry->folio = folio; + __entry->pfn = folio_pfn(folio); ), - /* Flag format is based on page-types.c formatting for pagemap */ - TP_printk("page=%p pfn=0x%lx", __entry->page, __entry->pfn) - + TP_printk("folio=%p pfn=0x%lx", __entry->folio, __entry->pfn) ); #endif /* _TRACE_PAGEMAP_H */ diff --git a/mm/swap.c b/mm/swap.c index 85969b36b636..c3137e4e1cd8 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -322,15 +322,15 @@ void lru_note_cost_page(struct page *page) page_is_file_lru(page), thp_nr_pages(page)); } -static void __activate_page(struct page *page, struct lruvec *lruvec) +static void __folio_activate(struct folio *folio, struct lruvec *lruvec) { - if (!PageActive(page) && !PageUnevictable(page)) { - int nr_pages = thp_nr_pages(page); + if (!folio_test_active(folio) && !folio_test_unevictable(folio)) { + int nr_pages = folio_nr_pages(folio); - del_page_from_lru_list(page, lruvec); - SetPageActive(page); - add_page_to_lru_list(page, lruvec); - trace_mm_lru_activate(page); + lruvec_del_folio(lruvec, folio); + folio_set_active(folio); + lruvec_add_folio(lruvec, folio); + trace_mm_lru_activate(folio); __count_vm_events(PGACTIVATE, nr_pages); __count_memcg_events(lruvec_memcg(lruvec), PGACTIVATE, @@ -339,6 +339,11 @@ static void __activate_page(struct page *page, struct lruvec *lruvec) } #ifdef CONFIG_SMP +static void __activate_page(struct page *page, struct lruvec *lruvec) +{ + return __folio_activate(page_folio(page), lruvec); +} + static void activate_page_drain(int cpu) { struct pagevec *pvec = &per_cpu(lru_pvecs.activate_page, cpu); @@ -352,16 +357,16 @@ static bool need_activate_page_drain(int cpu) return pagevec_count(&per_cpu(lru_pvecs.activate_page, cpu)) != 0; } -static void activate_page(struct page *page) +static void folio_activate(struct folio *folio) { - page = compound_head(page); - if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) { + if (folio_test_lru(folio) && !folio_test_active(folio) && + !folio_test_unevictable(folio)) { struct pagevec *pvec; + folio_get(folio); local_lock(&lru_pvecs.lock); pvec = this_cpu_ptr(&lru_pvecs.activate_page); - get_page(page); - if (pagevec_add_and_need_flush(pvec, page)) + if (pagevec_add_and_need_flush(pvec, &folio->page)) pagevec_lru_move_fn(pvec, __activate_page); local_unlock(&lru_pvecs.lock); } @@ -372,17 +377,15 @@ static inline void activate_page_drain(int cpu) { } -static void activate_page(struct page *page) +static void folio_activate(struct folio *folio) { - struct folio *folio = page_folio(page); struct lruvec *lruvec; - page = &folio->page; - if (TestClearPageLRU(page)) { + if (folio_test_clear_lru(folio)) { lruvec = folio_lruvec_lock_irq(folio); - __activate_page(page, lruvec); + __folio_activate(folio, lruvec); unlock_page_lruvec_irq(lruvec); - SetPageLRU(page); + folio_set_lru(folio); } } #endif @@ -447,7 +450,7 @@ void mark_page_accessed(struct page *page) * LRU on the next drain. */ if (PageLRU(page)) - activate_page(page); + folio_activate(page_folio(page)); else __lru_cache_activate_page(page); ClearPageReferenced(page);