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=-9.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED 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 C3821C4346E for ; Tue, 29 Sep 2020 08:58:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E50120848 for ; Tue, 29 Sep 2020 08:58:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727832AbgI2I6s (ORCPT ); Tue, 29 Sep 2020 04:58:48 -0400 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]:52212 "EHLO out30-133.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727759AbgI2I6s (ORCPT ); Tue, 29 Sep 2020 04:58:48 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R851e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=richard.weiyang@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0UATjWF-_1601369923; Received: from localhost(mailfrom:richard.weiyang@linux.alibaba.com fp:SMTPD_---0UATjWF-_1601369923) by smtp.aliyun-inc.com(127.0.0.1); Tue, 29 Sep 2020 16:58:44 +0800 Date: Tue, 29 Sep 2020 16:58:43 +0800 From: Wei Yang To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, Andrew Morton , Alexander Duyck , Vlastimil Babka , Oscar Salvador , Mel Gorman , Michal Hocko , Dave Hansen , Wei Yang , Mike Rapoport Subject: Re: [PATCH v1 1/5] mm/page_alloc: convert "report" flag of __free_one_page() to a proper flag Message-ID: <20200929085843.GA36790@L-31X9LVDL-1304.local> Reply-To: Wei Yang References: <20200928182110.7050-1-david@redhat.com> <20200928182110.7050-2-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200928182110.7050-2-david@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Mon, Sep 28, 2020 at 08:21:06PM +0200, David Hildenbrand wrote: >Let's prepare for additional flags and avoid long parameter lists of bools. >Follow-up patches will also make use of the flags in __free_pages_ok(), >however, I wasn't able to come up with a better name for the type - should >be good enough for internal purposes. > >Reviewed-by: Alexander Duyck >Reviewed-by: Vlastimil Babka >Reviewed-by: Oscar Salvador >Cc: Andrew Morton >Cc: Alexander Duyck >Cc: Mel Gorman >Cc: Michal Hocko >Cc: Dave Hansen >Cc: Vlastimil Babka >Cc: Wei Yang >Cc: Oscar Salvador >Cc: Mike Rapoport >Signed-off-by: David Hildenbrand Reviewed-by: Wei Yang >--- > mm/page_alloc.c | 28 ++++++++++++++++++++-------- > 1 file changed, 20 insertions(+), 8 deletions(-) > >diff --git a/mm/page_alloc.c b/mm/page_alloc.c >index df90e3654f97..daab90e960fe 100644 >--- a/mm/page_alloc.c >+++ b/mm/page_alloc.c >@@ -77,6 +77,18 @@ > #include "shuffle.h" > #include "page_reporting.h" > >+/* Free One Page flags: for internal, non-pcp variants of free_pages(). */ >+typedef int __bitwise fop_t; >+ >+/* No special request */ >+#define FOP_NONE ((__force fop_t)0) >+ >+/* >+ * Skip free page reporting notification for the (possibly merged) page. (will >+ * *not* mark the page reported, only skip the notification). >+ */ >+#define FOP_SKIP_REPORT_NOTIFY ((__force fop_t)BIT(0)) >+ > /* prevent >1 _updater_ of zone percpu pageset ->high and ->batch fields */ > static DEFINE_MUTEX(pcp_batch_high_lock); > #define MIN_PERCPU_PAGELIST_FRACTION (8) >@@ -948,10 +960,9 @@ buddy_merge_likely(unsigned long pfn, unsigned long buddy_pfn, > * -- nyc > */ > >-static inline void __free_one_page(struct page *page, >- unsigned long pfn, >- struct zone *zone, unsigned int order, >- int migratetype, bool report) >+static inline void __free_one_page(struct page *page, unsigned long pfn, >+ struct zone *zone, unsigned int order, >+ int migratetype, fop_t fop_flags) > { > struct capture_control *capc = task_capc(zone); > unsigned long buddy_pfn; >@@ -1038,7 +1049,7 @@ static inline void __free_one_page(struct page *page, > add_to_free_list(page, zone, order, migratetype); > > /* Notify page reporting subsystem of freed page */ >- if (report) >+ if (!(fop_flags & FOP_SKIP_REPORT_NOTIFY)) > page_reporting_notify_free(order); > } > >@@ -1379,7 +1390,7 @@ static void free_pcppages_bulk(struct zone *zone, int count, > if (unlikely(isolated_pageblocks)) > mt = get_pageblock_migratetype(page); > >- __free_one_page(page, page_to_pfn(page), zone, 0, mt, true); >+ __free_one_page(page, page_to_pfn(page), zone, 0, mt, FOP_NONE); > trace_mm_page_pcpu_drain(page, 0, mt); > } > spin_unlock(&zone->lock); >@@ -1395,7 +1406,7 @@ static void free_one_page(struct zone *zone, > is_migrate_isolate(migratetype))) { > migratetype = get_pfnblock_migratetype(page, pfn); > } >- __free_one_page(page, pfn, zone, order, migratetype, true); >+ __free_one_page(page, pfn, zone, order, migratetype, FOP_NONE); > spin_unlock(&zone->lock); > } > >@@ -3288,7 +3299,8 @@ void __putback_isolated_page(struct page *page, unsigned int order, int mt) > lockdep_assert_held(&zone->lock); > > /* Return isolated page to tail of freelist. */ >- __free_one_page(page, page_to_pfn(page), zone, order, mt, false); >+ __free_one_page(page, page_to_pfn(page), zone, order, mt, >+ FOP_SKIP_REPORT_NOTIFY); > } > > /* >-- >2.26.2 -- Wei Yang Help you, Help me