From patchwork Thu Mar 23 09:21:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185357 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 973CDC6FD1C for ; Thu, 23 Mar 2023 09:24:36 +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=V1Fqr30EXS1Nhu15V+UzUGXyr54OQadMS3u5lsDbtSM=; b=RilD2ldZe8Sgu3 T9O5qeCYJ6rNLnoqLjV5w5b7OaZncwZowWHwwN4J3Rm7+xjPr2bp82xgNomEMbAywnMpAW2SYfzIJ MaSs/q5gDIUuTvr63+sJv22kQb1IoACaVUF/yzGNX5GgteSiOLeZ3EfGboh6FrXJUiJ3qe7GoiVnl 59lkYwI8K6SBZUJ1Zjn9xuRMWMr5dtfYFiDaQPwUGPt8/xu06yNLNJ8BfnTD/X9nf0g5+h20RJBKs IBwD5E/ye6WVyyew30d//JOjw4ybH8SQwMxRa5yJdvjYyKfHfWvlhrpifOpVQWNqxTfiufQx0t3df BJpPFyqm/FwU4ZO+yVsQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfHAf-001Qdm-1X; Thu, 23 Mar 2023 09:23:45 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfHAX-001QZ7-2k for linux-arm-kernel@lists.infradead.org; Thu, 23 Mar 2023 09:23:39 +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 dfw.source.kernel.org (Postfix) with ESMTPS id 628A06256A; Thu, 23 Mar 2023 09:23:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D02FC433A8; Thu, 23 Mar 2023 09:23:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563417; bh=xyXXkPdOs/21dd9fXLx/1W3XAfw4Vm18klKPTzgLDlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GFFz5NaC+vrwnSCGIu6c0oHMBmH41+j5nnZFHvFRMqQaOnlu8zCF23yQp8LqpSUt6 Qu329MdHdt1bUT9fJK06PoV31PmGAOtM86VmGGT1ePi7NlfJEiWbMRrc+lyLqcxUaC g3wJxdZ/KGyisazSl2iXmhi5XAujfAaBfhSNzNxy9q7dxCJ4yRuzdekruueK/KJns7 E9Xbl9WHZZsP+II+QP+PJH/FE+VWPnqb5Q0JLaSNy+ppD59eLK0NEmcrtk4Jwx7jp8 pagmMXBYAzaV+b1cDmcUqxElrUp+xt0+aQe1ggmHaoGesSG3y9jUY6DZ+ry7M/kiwn JU/N4Vy1Mv7nQ== 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 11/14] sh: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:53 +0200 Message-Id: <20230323092156.2545741-12-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230323_022337_974184_B7BCB145 X-CRM114-Status: GOOD ( 16.16 ) 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)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) --- arch/sh/mm/Kconfig | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 40271090bd7d..fb15ba1052ba 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -19,8 +19,7 @@ config PAGE_OFFSET default "0x00000000" config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - range 8 63 if PAGE_SIZE_16KB + int "Order of maximal physically contiguous allocations" default "8" if PAGE_SIZE_16KB range 6 63 if PAGE_SIZE_64KB default "6" if PAGE_SIZE_64KB @@ -28,16 +27,18 @@ config ARCH_FORCE_MAX_ORDER default "13" if !MMU default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option. + Don't change if unsure. + config MEMORY_START hex "Physical memory start address" default "0x08000000"