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 8223EC32771 for ; Wed, 28 Sep 2022 22:34:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234762AbiI1Wee (ORCPT ); Wed, 28 Sep 2022 18:34:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234628AbiI1WeM (ORCPT ); Wed, 28 Sep 2022 18:34:12 -0400 Received: from mail-qt1-x834.google.com (mail-qt1-x834.google.com [IPv6:2607:f8b0:4864:20::834]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 454C9FB333; Wed, 28 Sep 2022 15:34:02 -0700 (PDT) Received: by mail-qt1-x834.google.com with SMTP id a20so8859725qtw.10; Wed, 28 Sep 2022 15:34:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=5WWAAzNcGRX09yf3QcgLeiV4ytIgw0QIAz2zMov/ZDY=; b=XG34Y6tDaJWwx6DqjTOFzsu9FQfdW30BYf0FXo1qOyK2ddb1gPjKGPuXlnXn7WJbbp 3at5ITh2zqc5ND+psxUlpktCRqb1IAzsURp8laAwU3meMWmslVlJ04PurbIm8TjZW067 nvbJ2vgFDTno5HMU+Gfi0PWAZYLTaVzf8H1Dyc6ZNAhhNr+6tXQhmbbkKh+4XQNl5zF1 K+hxIbMy/hJCcqrK4JjzhlxcdtKPFgihmjVSBLcdQYwclydS6XWbaKLgt1yT+hrAmziP mvTMSR2mIOdkNftizVll21ORt676/ts4LNcVaPrB5p5YHLQb1rddtODGPalGlxkiWHGt FAtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=5WWAAzNcGRX09yf3QcgLeiV4ytIgw0QIAz2zMov/ZDY=; b=Eb0ykG2QwAMxlMzJHSd+WHk/y+BZoyHXyw8BoQB4TABcgS8QkyLqpCh5NtLmSs36Cb zemF950YB0+p6jaApVupXGZHERtguFGAa8fusD8pKCLSdxyZJdeJy4J1ts3QVqrZfXPv ZKyB9FNeXwl6DNySGtdTal3fLtv/tK8/DRr9UaBfDxJ9MWsTe+VGt2kCdu0cLvat7LjW Q+DFXb4RQFSCEAp7vnmZvZ3tafNuclGDT5u6lWMsDHJJCaNmgv9cB1vIb05ASAuGCQvR KR4kuNM5ytjkrdVfH/24heBxQ+tr3zQRMJJEbIrdE8VHxE1+y1EjSjPiolk8Y0zE5sM0 SRvA== X-Gm-Message-State: ACrzQf2IjVpMyHfC3duP0V/wNNVow5jJ5RWQw0IrLNbY/PfJxU9xgwPx jQm8ZrJBpztupomup6YAwQw= X-Google-Smtp-Source: AMsMyM5hls3k73DLDHwmozK6Fn+6fum9LVyQsQgOKR/Uau82IHif8GbeTAVnzUtgkLXNeRQjKZrgzg== X-Received: by 2002:ac8:584c:0:b0:35c:ceee:197a with SMTP id h12-20020ac8584c000000b0035cceee197amr50280qth.662.1664404440788; Wed, 28 Sep 2022 15:34:00 -0700 (PDT) Received: from stbirv-lnx-3.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id j188-20020a37b9c5000000b006bb83c2be40sm3963481qkf.59.2022.09.28.15.33.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Sep 2022 15:34:00 -0700 (PDT) From: Doug Berger To: Andrew Morton Cc: Jonathan Corbet , Mike Rapoport , Borislav Petkov , "Paul E. McKenney" , Neeraj Upadhyay , Randy Dunlap , Damien Le Moal , Muchun Song , KOSAKI Motohiro , Mel Gorman , Mike Kravetz , Florian Fainelli , David Hildenbrand , Oscar Salvador , Michal Hocko , Joonsoo Kim , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Doug Berger Subject: [PATCH v2 6/9] memblock: introduce MEMBLOCK_MOVABLE flag Date: Wed, 28 Sep 2022 15:32:58 -0700 Message-Id: <20220928223301.375229-7-opendmb@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220928223301.375229-1-opendmb@gmail.com> References: <20220928223301.375229-1-opendmb@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org The MEMBLOCK_MOVABLE flag is introduced to designate a memblock as only supporting movable allocations by the page allocator. Signed-off-by: Doug Berger --- include/linux/memblock.h | 8 ++++++++ mm/memblock.c | 24 ++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 50ad19662a32..8eb3ca32dfa7 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -47,6 +47,7 @@ enum memblock_flags { MEMBLOCK_MIRROR = 0x2, /* mirrored region */ MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ MEMBLOCK_DRIVER_MANAGED = 0x8, /* always detected via a driver */ + MEMBLOCK_MOVABLE = 0x10, /* designated movable block */ }; /** @@ -125,6 +126,8 @@ int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); int memblock_mark_nomap(phys_addr_t base, phys_addr_t size); int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); +int memblock_mark_movable(phys_addr_t base, phys_addr_t size); +int memblock_clear_movable(phys_addr_t base, phys_addr_t size); void memblock_free_all(void); void memblock_free(void *ptr, size_t size); @@ -265,6 +268,11 @@ static inline bool memblock_is_driver_managed(struct memblock_region *m) return m->flags & MEMBLOCK_DRIVER_MANAGED; } +static inline bool memblock_is_movable(struct memblock_region *m) +{ + return m->flags & MEMBLOCK_MOVABLE; +} + int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, unsigned long *end_pfn); void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, diff --git a/mm/memblock.c b/mm/memblock.c index b5d3026979fc..5d6a210d98ec 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -979,6 +979,30 @@ int __init_memblock memblock_clear_nomap(phys_addr_t base, phys_addr_t size) return memblock_setclr_flag(base, size, 0, MEMBLOCK_NOMAP); } +/** + * memblock_mark_movable - Mark designated movable block with MEMBLOCK_MOVABLE. + * @base: the base phys addr of the region + * @size: the size of the region + * + * Return: 0 on success, -errno on failure. + */ +int __init_memblock memblock_mark_movable(phys_addr_t base, phys_addr_t size) +{ + return memblock_setclr_flag(base, size, 1, MEMBLOCK_MOVABLE); +} + +/** + * memblock_clear_movable - Clear flag MEMBLOCK_MOVABLE for a specified region. + * @base: the base phys addr of the region + * @size: the size of the region + * + * Return: 0 on success, -errno on failure. + */ +int __init_memblock memblock_clear_movable(phys_addr_t base, phys_addr_t size) +{ + return memblock_setclr_flag(base, size, 0, MEMBLOCK_MOVABLE); +} + static bool should_skip_region(struct memblock_type *type, struct memblock_region *m, int nid, int flags) -- 2.25.1