From patchwork Fri Mar 24 05:22:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13186453 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 5F568C6FD20 for ; Fri, 24 Mar 2023 05:25:10 +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=OnOuDAMAPdX0aURm+fvgCHnHQWYEIevYBgedvtzXn9M=; b=0k3h7g+NCfJ+AG GgR5t1tlooMiE05kg1TIF4c5Is/VMOPNsphKB4Jb/GRpMDlxlcsizvbjSxZ0VSigeVHkGDUGuybhU 74fk+L4Pkdde1Fu/4p/1Q020Nq0xPAhNTZ0pn6CKMofPbo9zjoAGZNlW/Qydan+y2KXHUHqnnsbli 6h1N/DyPbHgH5cmDTkJ8n5kXcee5Z6YGyybj9zDw9PUezUbHicTzOfPU/1J0va/rcPFztLU6CxPPC BhtbQrqiX8tmLaf3kwLooNApISJh1ngMl7CKtg88rfsM5h1Cs6SR4sM5le0JPZZ6bXDeIkieuGEJ8 3ukCQuzGvLdjef/k/alQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfZuW-003ZrW-0i; Fri, 24 Mar 2023 05:24:20 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfZuO-003Zmb-29 for linux-arm-kernel@lists.infradead.org; Fri, 24 Mar 2023 05:24:14 +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 45FC062955; Fri, 24 Mar 2023 05:24:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7CB7C433A8; Fri, 24 Mar 2023 05:24:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679635451; bh=48PfBQrOo+QXja0Ye9RmxtH0qozaHFJkPGyXBVJ0K/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lQYVNtyW8kXyKp3WvuD38oW21w+WkkH215Y0MiUI49Y8eunz18neW0TYGpXTyqIwC XqFLx8+8KVgwS7YuprL35tsEcnIzjccalORzzxRDu0xqNm8Lg6qUpMBSV+wnqYH+BG 7fVis7yLRCfwYfIGELFjWraVoK1URjTvD6qYpEyDURrJzHfXGxQSmFtgV6lkeLJQj3 r9Q4srnlhyk6xgE8ueeU8JMnkcJholgdIrCRj7ZIMGsnzofOtELVm5WufcrZRRjtXC oymkdt48Gt4cjk9V6imqujHbS0ITqoYxY+5mFS1SktxcncGLDgZMXlKBtZAgEYnZ0y p4y+AlGsBG2aw== 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 v2 11/14] sh: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Fri, 24 Mar 2023 08:22:30 +0300 Message-Id: <20230324052233.2654090-12-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230324052233.2654090-1-rppt@kernel.org> References: <20230324052233.2654090-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230323_222412_797616_A73B6A87 X-CRM114-Status: GOOD ( 16.02 ) 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) Acked-by: Kirill A. Shutemov --- 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"