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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C94EC6FD1C for ; Sat, 25 Mar 2023 06:08:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D0201900002; Sat, 25 Mar 2023 02:08:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CB15C6B007B; Sat, 25 Mar 2023 02:08:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B79C4900002; Sat, 25 Mar 2023 02:08:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id AA7DB6B0078 for ; Sat, 25 Mar 2023 02:08:57 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 74884140B89 for ; Sat, 25 Mar 2023 06:08:57 +0000 (UTC) X-FDA: 80606392314.26.779DDA3 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf04.hostedemail.com (Postfix) with ESMTP id 9D49F4000D for ; Sat, 25 Mar 2023 06:08:55 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aYeiwpTr; spf=pass (imf04.hostedemail.com: domain of rppt@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1679724535; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=z/MzQvCHeq5bvjAN4jZVQinnaTQp3FGX3c1yGOwCCiQ=; b=uSHGheXgD7pCg34amz3VB4/fRC+y2S+7m2joPu6robVPP+JPqou8GibLAIVQryvMHV9oqY IBqFbuBN4e5fVzNOnzcXk/8EbWQ4QNr4bhYGaSwISmEtzilmCr/ZM6FJZ8ay/TNGCeyvoX kpasaqzjzpqFH7ObEtweIjWDzSGJ8KA= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aYeiwpTr; spf=pass (imf04.hostedemail.com: domain of rppt@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1679724535; a=rsa-sha256; cv=none; b=JJeNo0CIWlhUowFKT8+7VgLC79yu7YMmxR1AH8AQ2Z0hgrkjKLw09TAiLdJUgf5y/29JYv 6BBJ/djYLqy5pVOKkTUOFwCm2NB/TNw54GD/sDO8K44jBEdoHVoJudRS1kU1jLdf0L5VhN yamJERM1G20jozjiYGD1zFYaWB+9llk= 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 3EA53B826F3; Sat, 25 Mar 2023 06:08:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57BBCC433A1; Sat, 25 Mar 2023 06:08:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724532; bh=q7weBGPKvdBN57QUvQqtX5qaYPsIxnfEd8OnKmhnqdA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aYeiwpTrkkJSoEHTClUYXh4nHZxJy302IUQShQ1+6oY9htGMebu05MOB8El++8aFl 9kCWkyoZ/NML2PAjmMmc4A5JpN38TO8oYGUYnvDm1H6fl9IpQDJ+NIcfkLm0XwFidr 80fb1ox0I0Yo50ZNJuGe5yWch+qD5lyfJ2xzsL/vbY+y99KvrhTR/W9Poz/7bbebnv PXunooBfRF/+I8gx0SdK9ETB18c8PAoKpngxhYzuLdXTD4xHXE6Gshk98q/uM5eTfF 8ncadKj3TNKIfpB9PowlEDog5VRxNH3tb+JxbTmnfv5hOhsDVZT7BkwYOua/02Zyo6 Mh7TJGdi+dn8w== 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 01/14] arm: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:15 +0300 Message-Id: <20230325060828.2662773-2-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 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 9D49F4000D X-Stat-Signature: xw7adwg31gwfgfcpnotibmfbyzzjprqk X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1679724535-33786 X-HE-Meta: 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 EbFAwhZk 8ynllCPsmABS/Mc3q97kp0IWXaK/0hfLSe1QgZ9GDYJC7AJ3Dinrqxt3E8/+s12rc0HdcT0EfVgwLSzSOwuzSjp2XWieWCcZUCVcXI0rqOHTqQj6j+eosEKCSdg6/AJhgOVGgKKZAeGe8tLVaDJGeA6DQJWnPnoVWAQ3wt9e2iZ+DmdvBADQopL9oS9KFAkhMaBAOKQnSN2Bh0j7b+15oKwtYOdou0dfY2P/Hje3XipI6DdlIRAidLnandCsAv3X77euBawm+XPByPLTdrMqRLfzHLx05UG5kytKiijpKvbLY9VsumucqB8QBKxPgKhvj6gMM 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 (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. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/arm/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 929e646e84b9..0b15384c62e6 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1354,17 +1354,19 @@ config ARM_MODULE_PLTS configurations. If unsure, say y. config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" default "11" if SOC_AM33XX default "8" if SA1111 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. + + Don't change if unsure. config ALIGNMENT_TRAP def_bool CPU_CP15_MMU -- 2.35.1