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=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 4EBD3C83003 for ; Wed, 29 Apr 2020 13:10:35 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F00602074A for ; Wed, 29 Apr 2020 13:10:34 +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="MVapj8Ss" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F00602074A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49BzQc320mzDr3y for ; Wed, 29 Apr 2020 23:10:32 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=rppt@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=MVapj8Ss; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49ByDJ6WzWzDqmX for ; Wed, 29 Apr 2020 22:16:32 +1000 (AEST) 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 5E60E21D79; Wed, 29 Apr 2020 12:16:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588162590; bh=xtQCR6+gW45a9s1aGOZwforC/OBYLweyw2X6q9DWFXw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MVapj8SsT30fKxBTn0Apttu/7GlrjJjZcmdh9WMLTiB0JUywWX/5AiqxRuTxFgHIP rH3NYqL9b59R3mLsf+fOR9qhHN+nTDuBaQCgt9S53tDcsPNYMgGQBBBsfSwJqTxHKT WeCUAPnHsp222zaSZwX12ykRwSykBzBR1RFvBA+4= From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH v2 19/20] mm: simplify find_min_pfn_with_active_regions() Date: Wed, 29 Apr 2020 15:11:25 +0300 Message-Id: <20200429121126.17989-20-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: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, linux-doc@vger.kernel.org, Catalin Marinas , Heiko Carstens , Michal Hocko , "James E.J. Bottomley" , Max Filippov , Guo Ren , linux-csky@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Mike Rapoport , Greg Ungerer , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Baoquan He , Jonathan Corbet , linux-sh@vger.kernel.org, Helge Deller , x86@kernel.org, Russell King , Ley Foon Tan , Yoshinori Sato , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, Tony Luck , Qian Cai , Greentime Hu , Paul Walmsley , Stafford Horne , Guan Xuetao , Hoan Tran , Michal Simek , Thomas Bogendoerfer , Brian Cain , Nick Hu , linux-mm@kvack.org, Vineet Gupta , linux-mips@vger.kernel.org, openrisc@lists.librecores.org, Richard Weinberger , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Mike Rapoport The find_min_pfn_with_active_regions() calls find_min_pfn_for_node() with nid parameter set to MAX_NUMNODES. This makes the find_min_pfn_for_node() traverse all memblock memory regions although the first PFN in the system can be easily found with memblock_start_of_DRAM(). Use memblock_start_of_DRAM() in find_min_pfn_with_active_regions() and drop now unused find_min_pfn_for_node(). Signed-off-by: Mike Rapoport --- mm/page_alloc.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 30d171451d4c..b990e9734474 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7045,24 +7045,6 @@ unsigned long __init node_map_pfn_alignment(void) return ~accl_mask + 1; } -/* Find the lowest pfn for a node */ -static unsigned long __init find_min_pfn_for_node(int nid) -{ - unsigned long min_pfn = ULONG_MAX; - unsigned long start_pfn; - int i; - - for_each_mem_pfn_range(i, nid, &start_pfn, NULL, NULL) - min_pfn = min(min_pfn, start_pfn); - - if (min_pfn == ULONG_MAX) { - pr_warn("Could not find start_pfn for node %d\n", nid); - return 0; - } - - return min_pfn; -} - /** * find_min_pfn_with_active_regions - Find the minimum PFN registered * @@ -7071,7 +7053,7 @@ static unsigned long __init find_min_pfn_for_node(int nid) */ unsigned long __init find_min_pfn_with_active_regions(void) { - return find_min_pfn_for_node(MAX_NUMNODES); + return PHYS_PFN(memblock_start_of_DRAM()); } /* -- 2.26.1