From patchwork Thu Mar 23 09:21:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185327 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 1B152C6FD1D for ; Thu, 23 Mar 2023 09:22:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231465AbjCWJW2 (ORCPT ); Thu, 23 Mar 2023 05:22:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229461AbjCWJWZ (ORCPT ); Thu, 23 Mar 2023 05:22:25 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 315493C3B; Thu, 23 Mar 2023 02:22:23 -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 7A397B8201C; Thu, 23 Mar 2023 09:22:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 259A5C433A8; Thu, 23 Mar 2023 09:22:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563341; bh=dcp30wp/Hf38sazwKthrJJR/hJsAXPYg2a1DhIjhRsY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jhevsx6FrKz/DSKyWa48ul+Br2Qq/2CdJ5Nno3oUdRcLCIk7t1cB69NdAiT1tyn5H Lhz9wXdd5uW6MFyeM+B3h0u5ydPTvK6l7CwpgHyUk3OAlG9W2UODv0/MJDEe3oHJOX /m2zMnBtkTaffkchF+6L07TdZQwBCPludGH8NHdSFGMYkW0A/qG31dPbgSSEevOGTB mnSJ77OEHBhaBpfgDQgrtyP3mOg3IRf23662ZNu2bRdqFbjyKhfTPTIRFNBR2BggXZ Y0Ifi3DaCS8c1NsQKYmG++xjhZAcZPCDklL+uk+NpDJszMuDUHYYaoRUcujltm1mXh pEp5mnhql9Qpg== 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 01/14] arm: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:43 +0200 Message-Id: <20230323092156.2545741-2-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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/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 From patchwork Thu Mar 23 09:21:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185328 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 37CDAC6FD1C for ; Thu, 23 Mar 2023 09:22:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231609AbjCWJWn (ORCPT ); Thu, 23 Mar 2023 05:22:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231511AbjCWJWg (ORCPT ); Thu, 23 Mar 2023 05:22:36 -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 44AF71F4BE; Thu, 23 Mar 2023 02:22:31 -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 02287B8201C; Thu, 23 Mar 2023 09:22:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3258C433AA; Thu, 23 Mar 2023 09:22:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563348; bh=1wuMjPglrXxylZYRQp9g6PBGTaQCsIyJmL4MjyDfkT8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OZZcT6du5dwua6qJE5uCEiu3Bbh3Q97TquC+/sYNXkmdypc+bsLGDW93XoYEnZ4mH MSoFTjH6bKTl3fsgQ4Bc3SK5VaWp9pBpu5SvZo1sRyf7bml4ql3CzkUro6OsghW0vc Oy90Vtp+PuM+H/Fs7+pOeFq6VXb7ExvoCICIAZhSBN3LP0NP130lo2YGBKKTONyDoH O4a++hJhMH5PNPPUpgd9/coAlzQjl3AYohwmcVJY6mAnGbnI5g5nhBGeR+cfm7Ukr1 7eEmM1z6tUZiEn08emyl+wuY10m5eYRrfMvZd2JFyNi2MsejH2NoIL8GFXLAlQ90D9 npeRgo88+OTgg== 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 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:44 +0200 Message-Id: <20230323092156.2545741-3-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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 Signed-off-by: Mike Rapoport (IBM) --- arch/arm64/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e60baf7859d1..bab6483e4317 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1489,9 +1489,7 @@ config XEN config ARCH_FORCE_MAX_ORDER int "Maximum zone order" if 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 From patchwork Thu Mar 23 09:21:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185329 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 88B7EC6FD1C for ; Thu, 23 Mar 2023 09:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231693AbjCWJXF (ORCPT ); Thu, 23 Mar 2023 05:23:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231405AbjCWJWl (ORCPT ); Thu, 23 Mar 2023 05:22:41 -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 66D8120A10; Thu, 23 Mar 2023 02:22:37 -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 E9F3F62566; Thu, 23 Mar 2023 09:22:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FB03C433A8; Thu, 23 Mar 2023 09:22:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563356; bh=YegLTyBTgABVrk8X6Ho+iz90BqWsK5lqi1pUx+eF0sU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hwVWgNUmpqudVX5t/F4T7eVjm0xHfzWtg7vXKXM2ECqAoid0i5uuM9texyHvlOPEV lyJia9wrDlW0JFd9lMjQOEx8W0T5jd1+TJG7CJma6/ByrozwfR3fEJ+mMDIlvNLzwV 4q5Lcyirnh53qgBO9ZpI9gkUUf+3fLcNPWxiuxAjR4abA+WGhiQ4cIT1SEY/45ykKB w2YMBaN6+8xqLRjCoGCUnCSqFJWz3rgKIrF+qrDiwAa5EbSopDjo2gimc/UR44IViU W04N0UqyO8l9zfjlSz5/GrT+ylQg8hLZO0SHJ0FWxnUAaLATArJJIMkA+D/WKft8PF c7ZFGS6pkh14g== 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 03/14] arm64: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:45 +0200 Message-Id: <20230323092156.2545741-4-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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: Catalin Marinas --- arch/arm64/Kconfig | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index bab6483e4317..75af4c329224 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 ARM64_4K_PAGES || ARM64_16K_PAGES + int "Order of maximal physically contiguous allocations" if ARM64_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. - We make sure that we can allocate up to a HugePage size for each configuration. - Hence we have : - MAX_ORDER = PMD_SHIFT - PAGE_SHIFT => PAGE_SHIFT - 3 + The maximal size of allocation cannot exceed the size of the + section, so the value of MAX_ORDER should satisfy - However for 4K, we choose a higher default value, 10 as opposed to 9, giving us - 4M allocations matching the default size used by generic code. + MAX_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS + + Don't change if unsure. config UNMAP_KERNEL_AT_EL0 bool "Unmap kernel when running in userspace (aka \"KAISER\")" if EXPERT @@ -2298,4 +2298,3 @@ endmenu # "CPU Power Management" source "drivers/acpi/Kconfig" source "arch/arm64/kvm/Kconfig" - From patchwork Thu Mar 23 09:21:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185330 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 C59EEC77B62 for ; Thu, 23 Mar 2023 09:23:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231608AbjCWJXe (ORCPT ); Thu, 23 Mar 2023 05:23:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231633AbjCWJW5 (ORCPT ); Thu, 23 Mar 2023 05:22:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B65BB20D22; Thu, 23 Mar 2023 02:22:46 -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 3A3A3B82021; Thu, 23 Mar 2023 09:22:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E437BC433B0; Thu, 23 Mar 2023 09:22:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563363; bh=VIGq21IucJ5jyDrKWO8wDSFXKn1G4gpham/RhLaDiSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YfDyZKg6ubB3qVtTlpxKobEqRtwno61zPFlP3g3EIvlplSklLsZdZgd8QI++nKp4n qq2mJOxPwHzVhgTFzEAiFOfx+KPDLDwoJMzXey52ho+6XByzyjn3T3ZCKD4VZYT3kU cESe0WRXj+emYBHu833Ie/zYH4UBgDHJ3GJ5ePxM/uO1muD+DtVkdjQAf9ziZXzj+H 4+VX6vYZgHgBasWaay2Yvm3hUg76YEqRuvUFK4EUvPHEx5XhVCKEKGRBPfWgR5WtWO dU4L0e/mgCXn8RbvJfFELuUfLqP+eE794rhQOoRiuNs4FEE1ZnaNqR/QYUnj3nqRee MRKQtDiPgSwZg== 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 04/14] csky: drop ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:46 +0200 Message-Id: <20230323092156.2545741-5-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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. 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 -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 From patchwork Thu Mar 23 09:21:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185336 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 8CD5CC6FD1C for ; Thu, 23 Mar 2023 09:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231652AbjCWJX6 (ORCPT ); Thu, 23 Mar 2023 05:23:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231664AbjCWJXB (ORCPT ); Thu, 23 Mar 2023 05:23:01 -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 63E7A21A01; Thu, 23 Mar 2023 02:22:54 -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 D7FC5B8201C; Thu, 23 Mar 2023 09:22:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F0E1C433AE; Thu, 23 Mar 2023 09:22:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563371; bh=Taw/mVGmMzfFA4/zjWlz+sOR+xqfdhkwF0DQ85nhoys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vRT1J299K8QpI00sxZv59CyczO6p0SWP1wcHAQk8mghcdKjhLznndromKwnUtlkrM SRWyev3rVk+6CoxTsdqVockaQN2ib+Nl4FHOvmR+E/SjJe1acNEz6Z4GFuyF6GLjfd NuLmQu+LCOGDTIOxUdJKu3y2Kol4WBMAdYu5dp+Zj49J79N9Gzs8fUFCVhMdAWtkR8 Ee5XTvH/Aq3cY4DQROJ2COFMOABNcorPOEkkywcg034jyqoHf/3OREMiGZ7q6+/cP7 pO8gCgPnpv6P2h41m6iFg7ve1OatfexcxvMd110cY4RS/B3xhHDbjx1NZErU4piC14 QCF+7aV9m+NqQ== 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 05/14] ia64: don't allow users to override ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:47 +0200 Message-Id: <20230323092156.2545741-6-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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. 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. 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" From patchwork Thu Mar 23 09:21:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185337 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 29FEFC6FD1C for ; Thu, 23 Mar 2023 09:24:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231707AbjCWJYL (ORCPT ); Thu, 23 Mar 2023 05:24:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231564AbjCWJXE (ORCPT ); Thu, 23 Mar 2023 05:23:04 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E9567A80; Thu, 23 Mar 2023 02:23:00 -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 CDC5C6256D; Thu, 23 Mar 2023 09:22:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26655C4339E; Thu, 23 Mar 2023 09:22:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563379; bh=qM1kqSfFKpsE4xKrdSQW7DvR4rxMPF3in5qEieKPeA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GE5krmZ0gXB70ofGbcBeOPtXQDLzzCQ6IeYGZ14v4R8jeHsrKel/M382hm7G8CAyY WSwNliNppBUKyln1dzxYxIiPKolESMW5XFmY5rNfSGZQQAt/ZPlFgjRt4zvvPNMsP1 btLklwizse4VYyFA8wBmdsJI/2Afc3xukaqL3fOqKJ4dUoiBP3w6a2I+4ipO2eYE6a If3yoskjdPy/OtjijJmM4uHLXAA675hSKZsojEik+P1JYu5Qdg0vJ0C2kUNi6SOZRO 1wa49ymgOshm7pgeknQKGF2zZjq0eXa0FzDHC5jxAfI6l1tXu9ebX6MaBUej00yf7+ 86ZKAZJa2UAfA== 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 06/14] m68k: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:48 +0200 Message-Id: <20230323092156.2545741-7-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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: Geert Uytterhoeven --- 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. 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. 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. + Don't change if unsure. + config 060_WRITETHROUGH bool "Use write-through caching for 68060 supervisor accesses" depends on ADVANCED && M68060 From patchwork Thu Mar 23 09:21:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185338 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 679DBC7619A for ; Thu, 23 Mar 2023 09:24:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231445AbjCWJYn (ORCPT ); Thu, 23 Mar 2023 05:24:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231649AbjCWJXc (ORCPT ); Thu, 23 Mar 2023 05:23:32 -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 30B45EFBB; Thu, 23 Mar 2023 02:23:07 -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 6572A62566; Thu, 23 Mar 2023 09:23:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4F5DC433A0; Thu, 23 Mar 2023 09:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563386; bh=2cBYSF+JamtgsUh/BOUyBseGRxUzFBktadFA1PpPvNk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OzqUXRJvV5cHhhxpEQ76d0VmU9uuByNR8pcfw0l9ZT0pUxGdp9gz7IOdJ66R8dqXw 5FnZFyrNaxWOzoSbHrQ6/ZDGPnxAxYDl2BnY+xWiqOGURfr9e2VkCnrr8L9Gbjfwpc HOlDenrpg4JUs2TFkXkOV7O5LYl6nEsPELlOlAv9iHXU4q5POu//gt+gKg5uP+Ny9L o5o1k5mpI2e+4t1Js33KwBaCT3bLrYzUiQxXWh1vfyrNCqFtV/ZQu1hQ/eSNGKtd31 PavpmOfvieMQUnvC+CwhHR9pKI4cbxwUVVA+Umw8wBJoMrORkoopTP9wnn/sWxuy4K eN/4aW2yBGF9Q== 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 07/14] nios2: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:49 +0200 Message-Id: <20230323092156.2545741-8-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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/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" 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. endmenu From patchwork Thu Mar 23 09:21:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185339 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 95FA9C6FD1D for ; Thu, 23 Mar 2023 09:25:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231557AbjCWJZP (ORCPT ); Thu, 23 Mar 2023 05:25:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230074AbjCWJYa (ORCPT ); Thu, 23 Mar 2023 05:24:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23FDA3C3B; Thu, 23 Mar 2023 02:23:17 -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 BB204B82025; Thu, 23 Mar 2023 09:23:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6048AC4339E; Thu, 23 Mar 2023 09:23:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563394; bh=jzZSH15gj6TUOIsTCrO5L+I5me/Mb74Nnyc5QzApf2o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=opvYt+M6nVWy83Z/VnNrEAxA7GcoGHzEz8QYyBOSThR1uJN44T0NbsszAVqRkmb9A SFPedINEgAbnyJ/AKydoamZjo3WlyOV/lqEJmXHsxX31FbqFPcrUSqmaQWw7/Lavv0 pPumm6jkzkBxu2g5cEsCaVlcJS4bENKkkFc8Cz2Wz6eQKaxqTYIhIRxBQoMF2g89v5 DZ2t+8xW5kCcFwoLehAHXimJZXVI3kEvMEYcvGsn+KOl1TSwgvlKsnJ9ypkWw+7GOc VfD+ftLkOkIQYp64EjA4dBOMp2fQX797VTwRK697fAL4dXiohtz60VzvDWHmWbnAxZ 3F3FrUCphxRGg== 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 08/14] nios2: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:50 +0200 Message-Id: <20230323092156.2545741-9-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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. 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" 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 From patchwork Thu Mar 23 09:21:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185340 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 974CDC76195 for ; Thu, 23 Mar 2023 09:25:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231344AbjCWJZd (ORCPT ); Thu, 23 Mar 2023 05:25:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231455AbjCWJYn (ORCPT ); Thu, 23 Mar 2023 05:24:43 -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 8B27B20077; Thu, 23 Mar 2023 02:23:24 -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 3C378B82027; Thu, 23 Mar 2023 09:23:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 041DAC433A7; Thu, 23 Mar 2023 09:23:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563402; bh=/lzhNRYztJj1ouQRj918klLWnmAPsjZfq5Hpj2i7B9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S9vNGrWjED3wIll6kE/hVbqtHfO9MyT/Hu6xNL8puEW0xDcgPxTscIk7hCO4DRRC5 ilO3FYhi6cQgQK9M7F6iTKF9trHSwbxr5hoJkfZj7dH58LZn2C0zHeNgnNbtsmUQtM hIsslwy+kW7OQFFbsPJLGsP2YYNhAjYKRraZceOdAm6m8c5i1/UJ1zDvaAj33xmKbC 6w6+dB64eKtu7qOhgcaxRaogkiGRFH33MjiIPbCNMShREvrHFXffR8koK71/C5/yo0 J7tSw2rFHv3JNHd4XhC8LmXab+nvHt/80GpNUDwm9bN1QeR0YrOvlmBRd2KSSdSgQA DNJeKxdyXaYug== 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 09/14] powerpc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:51 +0200 Message-Id: <20230323092156.2545741-10-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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/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. 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. 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. + Don't change if unsure. + config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages (subpage_prot syscall)" default n From patchwork Thu Mar 23 09:21:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185341 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 4AEA8C76195 for ; Thu, 23 Mar 2023 09:25:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231564AbjCWJZs (ORCPT ); Thu, 23 Mar 2023 05:25:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229379AbjCWJZB (ORCPT ); Thu, 23 Mar 2023 05:25:01 -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 417F42004A; Thu, 23 Mar 2023 02:23:32 -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 E652BB8202F; Thu, 23 Mar 2023 09:23:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 922B2C4339E; Thu, 23 Mar 2023 09:23:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563409; bh=mp6A6C8OOeS6nY+QDsN8wj88cRjFdHtJCyFT1kANL6s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vf+DqdFMjEwSbPC+mJj235EVrBbgYDeFMYHxHYwKEoJX6x2hG7Nd6wUFlTriUV+ju Ki+QZQPrDtM2ZM/upW1C91O6NowwP2geqJok0JmWq2H72w6qScQsAHBP450KPi50O8 GnVm52Ym3n9y0567PryZU/4PnsUtdUTXIfj7RKzU4XtAIIDfvODMlcqYrijMGf+xdU xlmiAvGgCuUdAQV6JuFcTkmxtOYvFB1YsVPqzbZtVOz+BNwl7EUfScn+rtw/Gn/cvW hcHl/dApeHp57bvQnfEJzFI6X2ZwwbySWtQPm/oSj5a+4/6CqZV3+pdT8sT7oM/zlU LyHhQhr8mNFeQ== 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 10/14] powerpc: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:52 +0200 Message-Id: <20230323092156.2545741-11-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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. 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 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 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: 13185342 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 5101CC6FD1C for ; Thu, 23 Mar 2023 09:26:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231458AbjCWJ0R (ORCPT ); Thu, 23 Mar 2023 05:26:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbjCWJZM (ORCPT ); Thu, 23 Mar 2023 05:25:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AF51211D6; Thu, 23 Mar 2023 02:23:38 -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 C372562567; 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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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" From patchwork Thu Mar 23 09:21:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185343 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 ED596C761AF for ; Thu, 23 Mar 2023 09:26:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230343AbjCWJ0i (ORCPT ); Thu, 23 Mar 2023 05:26:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47314 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231654AbjCWJZs (ORCPT ); Thu, 23 Mar 2023 05:25:48 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87340227A0; Thu, 23 Mar 2023 02:23:47 -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 29E24B8202F; Thu, 23 Mar 2023 09:23:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD746C4339C; Thu, 23 Mar 2023 09:23:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563424; bh=99+9gRXuNZGZrnvJd+Y1nZy5usyv3NMBBGlXNWMVJhs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fSSowVKku6I+4khALqKcaWeFjf1TxQwq6N17YCC7lSQQq1PMKZNZXR6Amg8KHBCln 8D1+czeovKFYgk9ba7AwrEOWdx4T4TvSidUG4w0oEnP7Ux2idkiveTG5RuhNH001uj ZH2wbqVR6pwA72IlRr0A0Vm+Px75ZhuzsapmFJ4MJUx20c6j0uj+d4nkaYltR2HdGP LBmRDMYlYeROh4iX+5zaZEFyfMPZyDOym4GBzHOPHNe4Rg7MF0KLgYOBU/kY0U7tEp 2qhz4vjT8nOntJZetWtWrbF6J0wrO+fnxdSyIdjlEGw6E/HBeJt9B+RUXXoHM7dYWp 7S274GLZIA5Jg== 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 12/14] sh: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:54 +0200 Message-Id: <20230323092156.2545741-13-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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. Signed-off-by: Mike Rapoport (IBM) --- arch/sh/mm/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index fb15ba1052ba..511c17aede4a 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -21,9 +21,7 @@ config PAGE_OFFSET config ARCH_FORCE_MAX_ORDER 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 - range 10 63 default "13" if !MMU default "10" help From patchwork Thu Mar 23 09:21:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185344 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 DDE63C6FD1C for ; Thu, 23 Mar 2023 09:27:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231302AbjCWJ1A (ORCPT ); Thu, 23 Mar 2023 05:27:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230310AbjCWJ02 (ORCPT ); Thu, 23 Mar 2023 05:26:28 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A24541E1DF; Thu, 23 Mar 2023 02:23:53 -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 E71C362566; Thu, 23 Mar 2023 09:23:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57854C433A0; Thu, 23 Mar 2023 09:23:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563432; bh=h6B+59Tw/wfggMAxASThb2CqM8SDBv67+wW2LDMN9Jw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bXT7tVFQRhfcw151cmushy4biLsPbWo6PzWcZLPclsdZZu0AHI/gHXPCin5Sg9iiA 2jk1L0YVy7Qe/xDRPG5nOHZxPuEwCxatggeE5zw2R5dQXNP451ThM1w/k3c6D25V2O N+fe/J9ocQzrTj5ZRLDbYNoj8L7Fg7BoJUvOHZovfKRiaVzD97DUE5sICsn6MFA/LY pi2Jmg0MAtEvLy9L7TPVXS9dEOiqkceSsUxLk5XOUJZY6EZeficShFvwWbnG3PVgeZ ReZTduniWcIdQc0MmOkZSG5un3YfSersJkiDN7rNBFhp80ssYVvFAzH/URVEBtzC7R bB6ljs+LiityQ== 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 13/14] sparc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:55 +0200 Message-Id: <20230323092156.2545741-14-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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/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 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. if SPARC64 || COMPILE_TEST source "kernel/power/Kconfig" From patchwork Thu Mar 23 09:21:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13185345 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 E82C5C7619A for ; Thu, 23 Mar 2023 09:27:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231189AbjCWJ1Q (ORCPT ); Thu, 23 Mar 2023 05:27:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231292AbjCWJ0e (ORCPT ); Thu, 23 Mar 2023 05:26:34 -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 46A8B23329; Thu, 23 Mar 2023 02:24:05 -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 ams.source.kernel.org (Postfix) with ESMTPS id 47B10B82035; Thu, 23 Mar 2023 09:24:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4E88C433A8; Thu, 23 Mar 2023 09:23:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563440; bh=cLED8RkguNRC7M0dLtOL32lQLdxQxLek8h+Azi/Gy6Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WIWeaGhkdAVAFsei9Bza8wkj6njjW2uuNU19Ix52dZIy4kTovKxu2Yzdc1Dz5INgk 6Pg8B0dxqUnQqAGPRddvXBDr04oxwsZgfgMfgJcU2jrpRxwEnlQEkRrI1EaXpZ/Sd3 J1R1AHdgpJEjig/ZCiDv6lRb6moY7coIH3tSLS9pooMmPjppzT+nQQhT/DWOAlRgqO qm0cc8RB1yphHkpFQoCij3s1dldJDU1nXnNLUsJgMOQ4HfK7QoHZuhf2AiVIoE2wS5 yFRQUoFek2mX0QhpEnHG0I8VwxyFZGYOyQDQfZMNp/sVEaoPdJET5/f6iAfGlVUfv5 tjTM9P6gnulFg== 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 14/14] xtensa: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:56 +0200 Message-Id: <20230323092156.2545741-15-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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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) Reviewed-by: Max Filippov --- 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. 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. endmenu