From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59F35C6FD20 for ; Sat, 25 Mar 2023 06:09:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231963AbjCYGJB (ORCPT ); Sat, 25 Mar 2023 02:09:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232051AbjCYGI6 (ORCPT ); Sat, 25 Mar 2023 02:08:58 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EED31D31F; Fri, 24 Mar 2023 23:08:53 -0700 (PDT) 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 7CE56608D6; Sat, 25 Mar 2023 06:08:53 +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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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. =20 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. =20 config ALIGNMENT_TRAP def_bool CPU_CP15_MMU --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C69AC6FD1F for ; Sat, 25 Mar 2023 06:09:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232045AbjCYGJO (ORCPT ); Sat, 25 Mar 2023 02:09:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232073AbjCYGJD (ORCPT ); Sat, 25 Mar 2023 02:09:03 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A502B740; Fri, 24 Mar 2023 23:09:02 -0700 (PDT) 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 3A5DEB826F8; 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 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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=3Dy 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 --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F188CC77B61 for ; Sat, 25 Mar 2023 06:09:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229926AbjCYGJ1 (ORCPT ); Sat, 25 Mar 2023 02:09:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232187AbjCYGJM (ORCPT ); Sat, 25 Mar 2023 02:09:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9A7413DC1; Fri, 24 Mar 2023 23:09:08 -0700 (PDT) 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 B8274608D6; Sat, 25 Mar 2023 06:09:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 870B1C433D2; Sat, 25 Mar 2023 06:09:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724547; bh=qNh6nhkYIBdXaRuLL5GYGOpZBsiUYM9+UhineGTjJPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rirI1LE3IL192S0yKzg6Y9hCPNuKuJBa8/FnRMwHG+5iLbDwTy50fX949R6Y63xTF UXgqPugUFhJmfiXPsf80n0rIx2hpYxXgF013LBy9/cuaPPknS52iQCHlE9I/eNqysy YA5VqoQdNZbXputm2MtEunhOqdux1Kh0R1JI/PpfdvIMBpHcnD+7de9og02ue3WXm9 0M/AXHZ0+Vav4cfU8cZirL/pvPdBPSCqFqtvhnml0w4rkC9tX34dsfUjcp9G6nULZG oBPlI/jXvQ4LSznp1Wy4B+lgG4MPAphGjzPzbxy93VbPRvoljM+BMe3yd5jHEvzR4E ThQp2TwEZDftA== 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 03/14] arm64: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:17 +0300 Message-Id: <20230325060828.2662773-4-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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) Reviewed-by: Kefeng Wang --- arch/arm64/Kconfig | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7324032af859..cc11cdcf5a00 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1487,24 +1487,24 @@ config XEN # 16K | 27 | 14 | 13 | 11 = | # 64K | 29 | 16 | 13 | 13 = | config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" if EXPERT && (ARM64_4K_PAGES || ARM64_16K_PAGES) + int "Order of maximal physically contiguous allocations" if EXPERT && (AR= M64_4K_PAGES || ARM64_16K_PAGES) default "13" if ARM64_64K_PAGES default "11" if ARM64_16K_PAGES 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. =20 - We make sure that we can allocate up to a HugePage size for each config= uration. - Hence we have : - MAX_ORDER =3D PMD_SHIFT - PAGE_SHIFT =3D> PAGE_SHIFT - 3 + The maximal size of allocation cannot exceed the size of the + section, so the value of MAX_ORDER should satisfy =20 - However for 4K, we choose a higher default value, 10 as opposed to 9, g= iving us - 4M allocations matching the default size used by generic code. + MAX_ORDER + PAGE_SHIFT <=3D SECTION_SIZE_BITS + + Don't change if unsure. =20 config UNMAP_KERNEL_AT_EL0 bool "Unmap kernel when running in userspace (aka \"KAISER\")" if EXPERT --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2375C6FD1F for ; Sat, 25 Mar 2023 06:09:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232263AbjCYGJm (ORCPT ); Sat, 25 Mar 2023 02:09:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231990AbjCYGJX (ORCPT ); Sat, 25 Mar 2023 02:09:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6326419697; Fri, 24 Mar 2023 23:09:15 -0700 (PDT) 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 E58656092A; Sat, 25 Mar 2023 06:09:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA6EFC433A1; Sat, 25 Mar 2023 06:09:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724554; bh=rsWO9Gu3cLJfEZ6HGq7Yirp+4MPMX9dfat2W6BJq/Fk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VPc8dNXMBWIXJyN6sfN6LeTLRDC59T4bZLZBWq7JN53840Dl1l7ym8J18YFdxatIp 9DQpdhF4tu+AKAw0OjKnedcpW41C5WMuw9ucVi77g7PTxRglrMTBT3fovrTuqL36/2 Q3nBPLN01a2DhO70v9RrrtK15qCftbBFZGWwfhsPjuErp5vRGnR422qF2c+POTGGZo YXcGQua+Kxj2QNTUxj+Ci8zoUOnJX4+qLLchS0FzJJ6eMnaOvqBEiB4VZr+a7f6noP ypmyXJqvhzzN13BhkuTUs9QpJCd+dYk22bWNDDlH29JNUEDYaWLGwdmQk0iLZHu63b RV9GjrGP5l0RA== 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 04/14] csky: drop ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:18 +0300 Message-Id: <20230325060828.2662773-5-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The default value of ARCH_FORCE_MAX_ORDER matches the generic default defined in the MM code, the architecture does not support huge pages, so there is no need to keep ARCH_FORCE_MAX_ORDER option available. Drop it. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/csky/Kconfig | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index c694fac43bed..00379a843c37 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -332,10 +332,6 @@ config HIGHMEM select KMAP_LOCAL default y =20 -config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - default "10" - config DRAM_BASE hex "DRAM start addr (the same with memory-section in dts)" default 0x0 --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A237DC6FD1F for ; Sat, 25 Mar 2023 06:09:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232324AbjCYGJz (ORCPT ); Sat, 25 Mar 2023 02:09:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232322AbjCYGJg (ORCPT ); Sat, 25 Mar 2023 02:09:36 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA06D196B7; Fri, 24 Mar 2023 23:09:23 -0700 (PDT) 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 A9497B825B3; Sat, 25 Mar 2023 06:09:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D33E5C4339B; Sat, 25 Mar 2023 06:09:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724561; bh=i1yTqNQJAv9j+hn+e6Je6fypgZ2V4l+VQdL1xKFdNt8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MMKlT72mhQ2PYx2QKkpW7HIAd5YEdN2UUzXyp5OPY+RVH81GJReBKAnOuYcH/8N4l WOHExhClj+i4GsKcl4zdXGJ/CprKpWL0bI5GpGBCxZyea7sKd2OIYtrtZiy90mx7iP 0qHiAZsnOgHMoi72FY7hEINbeJBOh3/EeS8V3nvmVCzKqUV6n6DBCHHXTLE1AWz3Dq 4GoZvWhAYCKBEXH9aJN/k8T3WtR2fD7HwWoTTYdoUdw7nbJQTNAsVr3z/1/BqnLANs D6+61HAH1iAjlONcqOhnWOyQ0JjCv+vYxkn4cq7lC62id+2QwXz/RT+SPOr7yLWLT2 2GhWUJOebp2pw== 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 05/14] ia64: don't allow users to override ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:19 +0300 Message-Id: <20230325060828.2662773-6-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" It is enough to keep default values for base and huge pages without letting users to override ARCH_FORCE_MAX_ORDER. Drop the prompt to make the option unvisible in *config. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/ia64/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0d2f41fa56ee..b61437cae162 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -202,8 +202,7 @@ config IA64_CYCLONE If you're unsure, answer N. =20 config ARCH_FORCE_MAX_ORDER - int "MAX_ORDER (10 - 16)" if !HUGETLB_PAGE - range 10 16 if !HUGETLB_PAGE + int default "16" if HUGETLB_PAGE default "10" =20 --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFA78C77B62 for ; Sat, 25 Mar 2023 06:10:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231946AbjCYGKG (ORCPT ); Sat, 25 Mar 2023 02:10:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232233AbjCYGJj (ORCPT ); Sat, 25 Mar 2023 02:09:39 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB5B113DC9; Fri, 24 Mar 2023 23:09:29 -0700 (PDT) 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 3C49E601D7; Sat, 25 Mar 2023 06:09:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 09077C433EF; Sat, 25 Mar 2023 06:09:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724568; bh=hj7vE83HssbFqh7ceXf4d8PDT2ibdeflIODgz+GdCho=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SXe80G8K5kFrxjG4CHAB7R5j4HsXAkKtMPBiJa2K7KINUPXIi2Ttz6jVYYud+uQQu Sqk9QUfeacGt5ZgjN99doqzQVrC50C3YuLYQNcpirr0Ia10vnSKBcxUodmHH52wRjn YgaNoaLS/WzDEARfuG9phgmsGvIt528St1Sl/tGvK/A5j/ONumaKl9G/hpq8SZMPd4 tM55ZAcYgEJKLtK8ZxDvTirG9+OhUOJ2sGiPwsl3qPQhNSxborInoPqSn1guhYdrVl uogAfsplBhSxkmeDSpnuy73jioEoJrClCNpR9seAZETVm5kYNiqhYCXq7K8iz0f3D9 rJ2AfmxVuTIig== 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 06/14] m68k: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:20 +0300 Message-Id: <20230325060828.2662773-7-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 Acked-by: Geert Uytterhoeven Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/m68k/Kconfig.cpu | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index c9df6572133f..e530bc8f240f 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -398,21 +398,23 @@ config SINGLE_MEMORY_CHUNK Say N if not sure. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" if ADVANCED + int "Order of maximal physically contiguous allocations" if ADVANCED depends on !SINGLE_MEMORY_CHUNK 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. =20 For systems that have holes in their physical address space this value also defines the minimal size of the hole that allows freeing unused memory map. =20 + Don't change if unsure. + config 060_WRITETHROUGH bool "Use write-through caching for 68060 supervisor accesses" depends on ADVANCED && M68060 --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F15CBC6FD1C for ; Sat, 25 Mar 2023 06:10:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232073AbjCYGKV (ORCPT ); Sat, 25 Mar 2023 02:10:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232401AbjCYGJt (ORCPT ); Sat, 25 Mar 2023 02:09:49 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C964914483; Fri, 24 Mar 2023 23:09:36 -0700 (PDT) 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 621B260A2C; Sat, 25 Mar 2023 06:09:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30800C4339B; Sat, 25 Mar 2023 06:09:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724575; bh=yR6IAiapT38a9pKwWm/3BXD9YgZHr7AJtUsHQMRkuU4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LxmVn1HCJEbXvrAnkY6ryWzYzrhalHzch1XCuulOtrmDilKsVPW4ImuBrxQjqcb+j 98d8o4/uRpSRqxoGXEVd9lOkIkDS/B3keMXiryl2Sl4JCLcZzigQGgbk25kxS0upSr y1W1ve+zypvHyHIJxcqtlQKjdvvB9zhgnUsOH0yRmAKb2fBehdJcPrNcKECa5bVMNq FqAWY5u5WRAcmvtZtWqW3+53g2BN25XHuv5kzd4OcEwYht6Is1FS9q8qywdIQWaoP1 F5tLdbGIEVipeBUA5HFWnqaZLGL9cElwm2srP+S2ZQ8NKYKk3MxoRfD5l6AErrX71B Bv6bijGbPOvKw== 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 07/14] nios2: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:21 +0300 Message-Id: <20230325060828.2662773-8-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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/nios2/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index 89708b95978c..fcaa6bbda3fc 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -45,16 +45,18 @@ menu "Kernel features" source "kernel/Kconfig.hz" =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" range 8 19 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. =20 endmenu =20 --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 179FAC7619A for ; Sat, 25 Mar 2023 06:10:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232060AbjCYGKh (ORCPT ); Sat, 25 Mar 2023 02:10:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231985AbjCYGKA (ORCPT ); Sat, 25 Mar 2023 02:10:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEF561A4A5; Fri, 24 Mar 2023 23:09:43 -0700 (PDT) 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 8C92060907; Sat, 25 Mar 2023 06:09:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59301C4339E; Sat, 25 Mar 2023 06:09:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724583; bh=6bSLgS5oWLO2ugXNNWLZtVgkIZ/dfclb6HuVi9dltgc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MD4Y3Lr7O5i8W0DL1L83CZ+dmHRSmxfBpKFlVGb0DgT9OaiD36B+h63z9ihug64Xt +uP4BzJ6AZWugpLieIFtYGCbtxzw6ZyatiYC4fWW8CAwzL6pWjqqSsvcgnDMLYgF6v bPTpe3w1jgxF/xWLjlp6N73kl8sA9ufAw/OujMewVUttw3NIUjxzVegUw0ZCpPTgeo dKGv3LdM/EWzWYizCRfo+ODa9zq16J/BHrrkQPhBaeJ+cBdCf6CVhJZgWpETJHlt73 JWniOl/sAFMPuxry0QF1ZPtE0u23Wo0ckgfV3aFLg85tLaYbIGx5vI+JUWBvFc1ZsT 7Gx2p7TiWqDKA== 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 08/14] nios2: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:22 +0300 Message-Id: <20230325060828.2662773-9-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" nios2 defines range for ARCH_FORCE_MAX_ORDER allowing MAX_ORDER up to 19, which implies maximal contiguous allocation size of 2^19 pages or 2GiB. Drop bogus definition of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible default. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/nios2/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index fcaa6bbda3fc..e5936417d3cd 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -46,7 +46,6 @@ source "kernel/Kconfig.hz" =20 config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" - range 8 19 default "10" help The kernel page allocator limits the size of maximal physically --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26E9BC77B60 for ; Sat, 25 Mar 2023 06:10:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232449AbjCYGKs (ORCPT ); Sat, 25 Mar 2023 02:10:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232178AbjCYGKQ (ORCPT ); Sat, 25 Mar 2023 02:10:16 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7FB0199E6; Fri, 24 Mar 2023 23:09:52 -0700 (PDT) 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 7EE26B82701; Sat, 25 Mar 2023 06:09:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 83C6CC4339C; Sat, 25 Mar 2023 06:09:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724590; bh=jGLEKz2iqm7cMnQrUVYJL5S3M5/KheRmpBTQnwRR4g4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fuhyJhtHzN+qD82eoHpuLDmXvrAMorZAr/P2o9L7nfyMZs+HIZtlbR/vnexnzPPjQ 12iIcEMI6k/xnEuBxza1yG4SvIvAheU/XCDxj9gy6c8UT7rYqfDWnjxYZiyjIXQAuy Cw34EEoqONyrKGAC98SVlOM7KjkkGBpNPwdVBNVWwyepw3TPFnhRUAq46TiDceB7E7 LeHj8+xXZvSL9hRooqfhuKq1rb6GdFsD/ILlZPFfH5bv7Ub5fU9N1un8RFGJx5BKUF kdIUdTKCsI2Rz3oDl6ivjSPmrOXjW1ME7NKfBDtabqTOC+CfbdMm1qLscuK7AucmqO 8QqzrxYbPBEtw== 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 09/14] powerpc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:23 +0300 Message-Id: <20230325060828.2662773-10-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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/powerpc/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 24d56536b269..c0095bf795ca 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -896,7 +896,7 @@ config DATA_SHIFT 8M pages will be pinned. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" range 7 8 if PPC64 && PPC_64K_PAGES default "8" if PPC64 && PPC_64K_PAGES range 12 12 if PPC64 && !PPC_64K_PAGES @@ -910,17 +910,19 @@ config ARCH_FORCE_MAX_ORDER range 10 63 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. =20 The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep this in mind when choosing a value for this option. =20 + Don't change if unsure. + config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages (subpage_prot syscall)" default n --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E98E8C6FD20 for ; Sat, 25 Mar 2023 06:11:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232326AbjCYGLH (ORCPT ); Sat, 25 Mar 2023 02:11:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232283AbjCYGKc (ORCPT ); Sat, 25 Mar 2023 02:10:32 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66FB21A95B; Fri, 24 Mar 2023 23:09:59 -0700 (PDT) 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 8EC8DB82639; Sat, 25 Mar 2023 06:09:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB2DCC433AC; Sat, 25 Mar 2023 06:09:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724597; bh=o3v/f0seGdAieP7M24caD3rUrneRSNKMDfhKZvhr+c4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dlZIqcoyznkL1BKobFMvbQv37dL3Y5n/pYQmixa6V5wHpLEZoZh7mKIP/w+WaDln3 7F9U/KGc4cypsnTvMy9oSSfrgGALo8ZRsy0CCO2wxsn95KZUH66WMSYPrH+A1vRo8P m5DIfRaoJFsfaXsZDqqnvVk3vN8n6JycwxsVP5EnCJ1i3wogM96inqe6yhZ2OVDVv9 F03Fni6dt1PZR+WBmmBLf0bzz/xS7McoVuWqshVPeq2wPkPrNFx8Ge1eAY26HJlYt7 OejyqoLf5fINt0J1L8kMmt6aLbRSB4HCcXQtM1HnqsNGL1FZ8n1jBcAfRC50m+1miH orub55FmXGAyA== 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 10/14] powerpc: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:24 +0300 Message-Id: <20230325060828.2662773-11-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" PowerPC defines ranges for ARCH_FORCE_MAX_ORDER some of which are insanely allowing MAX_ORDER up to 63, which implies maximal contiguous allocation size of 2^63 pages. Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible defaults. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/powerpc/Kconfig | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index c0095bf795ca..419be4a71004 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -897,17 +897,11 @@ config DATA_SHIFT =20 config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" - range 7 8 if PPC64 && PPC_64K_PAGES default "8" if PPC64 && PPC_64K_PAGES - range 12 12 if PPC64 && !PPC_64K_PAGES default "12" if PPC64 && !PPC_64K_PAGES - range 8 63 if PPC32 && PPC_16K_PAGES default "8" if PPC32 && PPC_16K_PAGES - range 6 63 if PPC32 && PPC_64K_PAGES default "6" if PPC32 && PPC_64K_PAGES - range 4 63 if PPC32 && PPC_256K_PAGES default "4" if PPC32 && PPC_256K_PAGES - range 10 63 default "10" help The kernel page allocator limits the size of maximal physically --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE0EEC6FD20 for ; Sat, 25 Mar 2023 06:11:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232132AbjCYGLQ (ORCPT ); Sat, 25 Mar 2023 02:11:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232081AbjCYGKn (ORCPT ); Sat, 25 Mar 2023 02:10:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89B4F19F03; Fri, 24 Mar 2023 23:10:05 -0700 (PDT) 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 1B1696092A; Sat, 25 Mar 2023 06:10:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D45A0C433A7; Sat, 25 Mar 2023 06:09:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724604; bh=Q4kzp7hmJKAwhCDFhRPUCQkNxwXkbNHUiNCRyHZVRo4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NhWIQf/4CSlIfbVurDZyUb06nGU3J/0m5t5Q7paTe2sA4FJ4ExnWqS7+owSCidLIV xjF4Hui1ktMhyFjKRdWZz+zzit5NFzt5X9svx3qCkHz3yuhUcxQd5J6Fi51KTKe6YY W6Ta+3a0kjpl86l7bSQWaOgVIQHX1l0ORB2R6wDGkRpUKWhtIdavVLu6WUsuuThUFC CYGII+/RR+PTXKmCiR/N2d6kJjrSeDNgNhjt4nOPpvRZeMqm/m3+tm+/bwVjoQa5/z CjIVu9EE6qYeTXhqF5BEwB5udvuVW0dYoEUnybQbj1jeBPq+5I1Kvx4hb/eGW4YrmY mvsljINWlR8TA== 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 11/14] sh: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:25 +0300 Message-Id: <20230325060828.2662773-12-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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/sh/mm/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 40271090bd7d..238b2772751e 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -19,7 +19,7 @@ config PAGE_OFFSET default "0x00000000" =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" range 8 63 if PAGE_SIZE_16KB default "8" if PAGE_SIZE_16KB range 6 63 if PAGE_SIZE_64KB @@ -28,16 +28,18 @@ 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. =20 The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option. =20 + Don't change if unsure. + config MEMORY_START hex "Physical memory start address" default "0x08000000" --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB891C6FD20 for ; Sat, 25 Mar 2023 06:11:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232356AbjCYGL3 (ORCPT ); Sat, 25 Mar 2023 02:11:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232428AbjCYGKr (ORCPT ); Sat, 25 Mar 2023 02:10:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE3791A97B; Fri, 24 Mar 2023 23:10:12 -0700 (PDT) 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 4423360A1D; Sat, 25 Mar 2023 06:10:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B036C433A4; Sat, 25 Mar 2023 06:10:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724611; bh=n18lZ0S+0CZ2uvlkMluZxgCv0qlCJBiO8N8JH7KoZ1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q/Q2rpIWZ2cFYZzyaItyJiN5f6EP/GSImQhED2G1vH7rlwhPXyJEMpQxGKZ4uZQCC qitWtuJpknN31DG18FRDt/12qs/q7U50AzyQBPL7xtX81WEuD5O9mkCSWTye2JsQ5b o2oehB+7FaaHIEILJpt4cpuWMCavNkq2xs7TyeSewFL4tUWGajA9JtHwOYUvb+VUZH CGC5F+pZ10eARFG7ZR+xt2zgWBT6Wr0f9MktXpfvvQtUeEw79cK5v9aCS4M1Bfvv6/ UK1YnbIXGDs1gGS899x7h0os6Pe6lyyOXAXEEmys4HQs9lh4YKu8GQ3pCQP2W+FIrQ gsw3SBBnzyEhQ== 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 12/14] sh: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Sat, 25 Mar 2023 09:08:26 +0300 Message-Id: <20230325060828.2662773-13-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" sh defines insane ranges for ARCH_FORCE_MAX_ORDER allowing MAX_ORDER up to 63, which implies maximal contiguous allocation size of 2^63 pages. Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible defaults. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/sh/mm/Kconfig | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 238b2772751e..511c17aede4a 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -20,11 +20,8 @@ config PAGE_OFFSET =20 config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" - range 8 63 if PAGE_SIZE_16KB default "8" if PAGE_SIZE_16KB - range 6 63 if PAGE_SIZE_64KB default "6" if PAGE_SIZE_64KB - range 10 63 default "13" if !MMU default "10" help --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79C26C6FD1F for ; Sat, 25 Mar 2023 06:11:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232425AbjCYGLm (ORCPT ); Sat, 25 Mar 2023 02:11:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232187AbjCYGK5 (ORCPT ); Sat, 25 Mar 2023 02:10:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 770261A49B; Fri, 24 Mar 2023 23:10:21 -0700 (PDT) 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 17F83B82705; Sat, 25 Mar 2023 06:10:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34961C433D2; Sat, 25 Mar 2023 06:10:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724618; bh=4Z2NWXBqkUcDOlecQgNIdEoHt3g4ySgJpa9xjP+8bWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cQswqzYqOHsod0pqf6YFh66X/QrCAVr2YAwri/xOv3fttReIoM0QmyS0CNc7O8lfw iB9IiXk9UZF2X7g4y03lD7rt8tiPSQdbx5vzhgyUTdNKn7t6zEZLPPpuy8u+jYk1nB hreHJFycD54YdiEhqQ0HBvllQcOEdNGWjMTQ5lqG4aqa8u1V5zh0ltg8TIX82CILYd KQbZsSzZ3Xm5Sb7cQZr7wWsFV8B62+pKIVwZu8KuYKbvE4cZWx4VrFjgdd89Ru6LQi UFM2jB+uXudse6JjEI6YlpzMkLOP6KzIGAnNOl9YGWIzctd70MNq5ZFVUi6oq06Lts mKW75qDo8MgkQ== 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 13/14] sparc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:27 +0300 Message-Id: <20230325060828.2662773-14-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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/sparc/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index e3242bf5a8df..959e43a1aaca 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -270,15 +270,17 @@ config ARCH_SPARSEMEM_DEFAULT def_bool y if SPARC64 =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" default "12" 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. =20 if SPARC64 || COMPILE_TEST source "kernel/power/Kconfig" --=20 2.35.1 From nobody Mon May 6 05:42:40 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA7B5C6FD1C for ; Sat, 25 Mar 2023 06:11:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232136AbjCYGL4 (ORCPT ); Sat, 25 Mar 2023 02:11:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232010AbjCYGLX (ORCPT ); Sat, 25 Mar 2023 02:11:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1935A1ACE3; Fri, 24 Mar 2023 23:10:27 -0700 (PDT) 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 9320D60A22; Sat, 25 Mar 2023 06:10:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5C424C4339C; Sat, 25 Mar 2023 06:10:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679724626; bh=hCVCDYSIUr+qW4UF3Pu0/8IeYl4ydz564TXJ6RScpmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XBUYd1wuZ6QOfdcmSr87gRlsMsVV6FBPdIqQHrC3pqAHxOY2DIdF+XDvKoUtLcdnY YymUQInh+UCF4ZGCw4T6Y+Z/IhTvXn9NYU03GXLWRksPUoLzP+eevHP2twu9nwF/kt eOcwijKtLsxk2+/F5k34QVqplP6njWicYTWEb7ErMx3III6zx8dW9FO1/oDMujzPni vjd32oMZKSpAJmWoMmw0HoPy9firOqMSOjpEWDYToYK+vpkdSTUHG7ZtqaX8c39a/T fOjqka2MCZIjCqrg05vs+aCtbzGpK80SATMzTT0ifOqgqyrhOm5UuCOO/e80toO7Z/ HznUBqM4Me+zw== 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 14/14] xtensa: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Sat, 25 Mar 2023 09:08:28 +0300 Message-Id: <20230325060828.2662773-15-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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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. Reviewed-by: Max Filippov Acked-by: Kirill A. Shutemov Reviewed-by: Zi Yan Signed-off-by: Mike Rapoport (IBM) --- arch/xtensa/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3eee334ba873..3c6e5471f025 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -772,15 +772,17 @@ config HIGHMEM If unsure, say Y. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" 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. =20 endmenu =20 --=20 2.35.1