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=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 13377C83004 for ; Wed, 29 Apr 2020 12:14:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BA03A20731 for ; Wed, 29 Apr 2020 12:14:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Gete5mVf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA03A20731 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 669EA8E0011; Wed, 29 Apr 2020 08:14:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 619BA8E0001; Wed, 29 Apr 2020 08:14:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4E24D8E0011; Wed, 29 Apr 2020 08:14:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0228.hostedemail.com [216.40.44.228]) by kanga.kvack.org (Postfix) with ESMTP id 359838E0001 for ; Wed, 29 Apr 2020 08:14:13 -0400 (EDT) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id E959552C3 for ; Wed, 29 Apr 2020 12:14:12 +0000 (UTC) X-FDA: 76760784744.24.book51_41d830dc42633 X-HE-Tag: book51_41d830dc42633 X-Filterd-Recvd-Size: 5974 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Wed, 29 Apr 2020 12:14:12 +0000 (UTC) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3CBD82173E; Wed, 29 Apr 2020 12:13:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588162451; bh=b/YG7nYMld8qqhXfwVvj4aAyq9ECF9kG36OPoge17nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gete5mVfqPQzNVgaU0yDv63MEoXH9QTEuXfoT8T9XALYibDtnhNlr5vwRWl5WZhhE SHyUJw3hjEQKTV/pov/LM+Ar3n0IQB+On1WP1Nb+C190mk5i4q7MGiObjTCQ7YZNwi Jl/L/YwtBwGOKQakUeBhGOPCwTzZ4vnShoJFvTVM= From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Baoquan He , Brian Cain , Catalin Marinas , "David S. Miller" , Geert Uytterhoeven , Greentime Hu , Greg Ungerer , Guan Xuetao , Guo Ren , Heiko Carstens , Helge Deller , Hoan Tran , "James E.J. Bottomley" , Jonathan Corbet , Ley Foon Tan , Mark Salter , Matt Turner , Max Filippov , Michael Ellerman , Michal Hocko , Michal Simek , Nick Hu , Paul Walmsley , Qian Cai , Richard Weinberger , Rich Felker , Russell King , Stafford Horne , Thomas Bogendoerfer , Tony Luck , Vineet Gupta , x86@kernel.org, Yoshinori Sato , linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, sparclinux@vger.kernel.org, uclinux-h8-devel@lists.sourceforge.jp, Mike Rapoport Subject: [PATCH v2 09/20] csky: simplify detection of memory zone boundaries Date: Wed, 29 Apr 2020 15:11:15 +0300 Message-Id: <20200429121126.17989-10-rppt@kernel.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200429121126.17989-1-rppt@kernel.org> References: <20200429121126.17989-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Mike Rapoport The free_area_init() function only requires the definition of maximal PFN for each of the supported zone rater than calculation of actual zone size= s and the sizes of the holes between the zones. After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP the free_area_init() is available to all architectures. Using this function instead of free_area_init_node() simplifies the zone detection. Signed-off-by: Mike Rapoport --- arch/csky/kernel/setup.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c index 819a9a7bf786..0481f4e34538 100644 --- a/arch/csky/kernel/setup.c +++ b/arch/csky/kernel/setup.c @@ -26,7 +26,9 @@ struct screen_info screen_info =3D { =20 static void __init csky_memblock_init(void) { - unsigned long zone_size[MAX_NR_ZONES]; + unsigned long lowmem_size =3D PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSE= T); + unsigned long sseg_size =3D PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET); + unsigned long max_zone_pfn[MAX_NR_ZONES] =3D { 0 }; signed long size; =20 memblock_reserve(__pa(_stext), _end - _stext); @@ -36,28 +38,22 @@ static void __init csky_memblock_init(void) =20 memblock_dump_all(); =20 - memset(zone_size, 0, sizeof(zone_size)); - min_low_pfn =3D PFN_UP(memblock_start_of_DRAM()); max_low_pfn =3D max_pfn =3D PFN_DOWN(memblock_end_of_DRAM()); =20 size =3D max_pfn - min_low_pfn; =20 - if (size <=3D PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET)) - zone_size[ZONE_NORMAL] =3D size; - else if (size < PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET)) { - zone_size[ZONE_NORMAL] =3D - PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET); - max_low_pfn =3D min_low_pfn + zone_size[ZONE_NORMAL]; - } else { - zone_size[ZONE_NORMAL] =3D - PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET); - max_low_pfn =3D min_low_pfn + zone_size[ZONE_NORMAL]; + if (size >=3D lowmem_size) { + max_low_pfn =3D min_low_pfn + lowmem_size; write_mmu_msa1(read_mmu_msa0() + SSEG_SIZE); + } else if (size > sseg_size) { + max_low_pfn =3D min_low_pfn + sseg_size; } =20 + max_zone_pfn[ZONE_NORMAL] =3D max_low_pfn; + #ifdef CONFIG_HIGHMEM - zone_size[ZONE_HIGHMEM] =3D max_pfn - max_low_pfn; + max_zone_pfn[ZONE_HIGHMEM] =3D max_pfn; =20 highstart_pfn =3D max_low_pfn; highend_pfn =3D max_pfn; @@ -66,7 +62,7 @@ static void __init csky_memblock_init(void) =20 dma_contiguous_reserve(0); =20 - free_area_init_node(0, zone_size, min_low_pfn, NULL); + free_area_init(max_zone_pfn); } =20 void __init setup_arch(char **cmdline_p) --=20 2.26.1