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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12863C7EE2E for ; Wed, 7 Jun 2023 10:27:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238762AbjFGK1e (ORCPT ); Wed, 7 Jun 2023 06:27:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233580AbjFGK1c (ORCPT ); Wed, 7 Jun 2023 06:27:32 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51C2D1BDA for ; Wed, 7 Jun 2023 03:27:31 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id E6AFD219BF; Wed, 7 Jun 2023 10:27:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686133649; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=RcOzZrJWhoRnq3UjVu8IiEmZ1f/byTB2AbKHvJfMDX0=; b=rAi77/t94BXnu7pScTCKfbW5WjP5hkGGTuIgJrP2zFYfjopIP0nkfdiWlea1f4JBZQQyRx 1VNxxfeR/0xx4ssCCkop5/XaNvdXf58l5X3Qa4Ykr9kT2UNZhyjNhuPAIWet+G7efEAxpP +nK331TAkSdzV8e6WjToYtIoEMzEVVE= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id D4D171346D; Wed, 7 Jun 2023 10:27:29 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id JMHNMpFbgGTafwAAMHmgww (envelope-from ); Wed, 07 Jun 2023 10:27:29 +0000 Date: Wed, 7 Jun 2023 12:27:29 +0200 From: Michal Hocko To: Haifeng Xu Cc: david@redhat.com, rppt@kernel.org, osalvador@suse.de, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] mm/memory_hotplug: remove reset_node_managed_pages() in hotadd_init_pgdat() Message-ID: References: <20230607024548.1240-1-haifeng.xu@shopee.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230607024548.1240-1-haifeng.xu@shopee.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 07-06-23 02:45:48, Haifeng Xu wrote: > managed pages has already been set to 0 in free_area_init_core_hotplug(), > via zone_init_internals() on each zone. It's pointless to reset again. > > Furthermore, reset_node_managed_pages() no longer needs to be exposed > outside of mm/memblock.c. Remove declaration in include/linux/memblock.h > and define it as static. > > In addtion to this, the only caller of reset_node_managed_pages() is > reset_all_zones_managed_pages(), which is annotated with __init, so it > should be safe to also mark reset_node_managed_pages() as __init. > > Signed-off-by: Haifeng Xu > Suggested-by: David Hildenbrand Acked-by: Michal Hocko > --- > v2: > - unexport reset_node_managed_pages() > - mark reset_node_managed_pages() as __init > - update commit message > --- > include/linux/memblock.h | 1 - > mm/memblock.c | 2 +- > mm/memory_hotplug.c | 1 - > 3 files changed, 1 insertion(+), 3 deletions(-) > > diff --git a/include/linux/memblock.h b/include/linux/memblock.h > index f82ee3fac1cd..f71ff9f0ec81 100644 > --- a/include/linux/memblock.h > +++ b/include/linux/memblock.h > @@ -128,7 +128,6 @@ int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); > > void memblock_free_all(void); > void memblock_free(void *ptr, size_t size); > -void reset_node_managed_pages(pg_data_t *pgdat); > void reset_all_zones_managed_pages(void); > > /* Low level functions */ > diff --git a/mm/memblock.c b/mm/memblock.c > index 3feafea06ab2..da4264528e1e 100644 > --- a/mm/memblock.c > +++ b/mm/memblock.c > @@ -2122,7 +2122,7 @@ static unsigned long __init free_low_memory_core_early(void) > > static int reset_managed_pages_done __initdata; > > -void reset_node_managed_pages(pg_data_t *pgdat) > +static void __init reset_node_managed_pages(pg_data_t *pgdat) > { > struct zone *z; > > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 8e0fa209d533..65e385f34679 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -1210,7 +1210,6 @@ static pg_data_t __ref *hotadd_init_pgdat(int nid) > * online_pages() and offline_pages(). > * TODO: should be in free_area_init_core_hotplug? > */ > - reset_node_managed_pages(pgdat); > reset_node_present_pages(pgdat); > > return pgdat; > -- > 2.25.1 -- Michal Hocko SUSE Labs