From patchwork Sat Mar 25 06:08:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13187609 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DD82FC77B60 for ; Sat, 25 Mar 2023 06:09:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oo2lIleLre+ab0+t/h+rWOeZXsZKNMh3T1EPxGCviGo=; b=3+PdlNgLmnBzq6 Po3/kK/zRbyz/Uo5LiMGfcutipSiTNunACLLPUvHBuwQ7y4f5gaQNv5YrobXThnX+9gjcZfkF4gwd E2cM5Eo5qy7zTllIsJr203QHKssRIr9/iAMELbtjWH15mQitVasd/F5icf829ajP/KyfJ/josXxAy 6wWzuK8du6QH3JhLzdPD1drQ+LZ1VQSwA9CHJ6u8GUqRcyGEJhhAB8MdvASQm7ce1GrjAnK5Sp3Yz J/32F9OQRv3+LCSzzMpqLdfV55vUxxfGTLc4NdH0F5Uj4R4hL1i7oek2xtbVQoEk1Nc2y+jsMFjEZ gy5J0dWecvF01OZNPtnA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfx5R-006Bhg-2N; Sat, 25 Mar 2023 06:09:09 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfx5K-006BfS-2U for linux-arm-kernel@lists.infradead.org; Sat, 25 Mar 2023 06:09:04 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 50FA2B826FB; Sat, 25 Mar 2023 06:09:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F625C4339B; Sat, 25 Mar 2023 06:08:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724540; bh=AZxdkgPPk5uvF+BQxbM9LjXE7h2xyoTV5CHwXU/8HBE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=frI6wY/7y9Ugq/kDdNPQDTAIrUL1Ibp1tX6t7Wkvuc4peDLOUS0FLn14dUsWo/UVP KtNbpypjIDQfLX5Sa2evDMHXVx61HvtQHFOB9PKZEAXW6tzkIYZ7paJcUl7b6QDkDd XhemG7a6NpMMwzsAA5r8YA40P6xhw2fdg7YT8O/KlzdC1TBydkuv+gJo7kkTOrB7+s enMaqi5rZNqjbwsUTqTpvzzTnA0aG8BdvkEhvLbQnSOQX291OOqIQDs7NKNHFmtArR Nv401z48Zg8rkh8YIDSIShaFEhib6B5rPElKdicGjHXH6RCXcm7FcU+nr/k4vFBvHI +2xif/sknb2gQ== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH v3 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:16 +0300 Message-Id: <20230325060828.2662773-3-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230325060828.2662773-1-rppt@kernel.org> References: <20230325060828.2662773-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230324_230902_956328_64920C61 X-CRM114-Status: GOOD ( 13.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Mike Rapoport (IBM)" It is not a good idea to change fundamental parameters of core memory management. Having predefined ranges suggests that the values within those ranges are sensible, but one has to *really* understand implications of changing MAX_ORDER before actually amending it and ranges don't help here. Drop ranges in definition of ARCH_FORCE_MAX_ORDER and make its prompt visible only if EXPERT=y Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) Reviewed-by: Kefeng Wang --- arch/arm64/Kconfig | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e60baf7859d1..7324032af859 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1487,11 +1487,9 @@ config XEN # 16K | 27 | 14 | 13 | 11 | # 64K | 29 | 16 | 13 | 13 | config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" if ARM64_4K_PAGES || ARM64_16K_PAGES + int "Maximum zone order" if EXPERT && (ARM64_4K_PAGES || ARM64_16K_PAGES) default "13" if ARM64_64K_PAGES - range 11 13 if ARM64_16K_PAGES default "11" if ARM64_16K_PAGES - range 10 15 if ARM64_4K_PAGES default "10" help The kernel memory allocator divides physically contiguous memory