From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933578Ab3LINPA (ORCPT ); Mon, 9 Dec 2013 08:15:00 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:19163 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932631Ab3LINO5 (ORCPT ); Mon, 9 Dec 2013 08:14:57 -0500 X-AuditID: cbfec7f4-b7f966d0000003d9-c6-52a5c24fa770 From: Tomasz Figa To: Daniel Kurtz Cc: Russell King , Kukjin Kim , Ben Dooks , Heiko Stuebner , Amit Daniel Kachhap , Abhilash Kesavan , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Doug Andersen Subject: Re: [PATCH 1/3] ARM: EXYNOS: pmu: Constify data tables Date: Mon, 09 Dec 2013 14:14:45 +0100 Message-id: <1922780.plAOmhqzpW@amdc1227> Organization: Samsung Poland R&D Center User-Agent: KMail/4.11.3 (Linux/3.11.5-gentoo; KDE/4.11.3; x86_64; ; ) In-reply-to: <1384971686-7208-1-git-send-email-djkurtz@chromium.org> References: <1384971686-7208-1-git-send-email-djkurtz@chromium.org> MIME-version: 1.0 Content-transfer-encoding: 7Bit Content-type: text/plain; charset=us-ascii X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMLMWRmVeSWpSXmKPExsVy+t/xy7oBh5YGGZxSsXi8ZjGTRcPVEItJ 6w4wWZxddpDNonHGfFaL/49es1r0LrjKZrHp8TVWi8u75rBZzDi/j8ni9mVeB26PluYeNo/Z DRdZPP6uesHssXlJvUffllWMHtuvzWP2+LxJLoA9issmJTUnsyy1SN8ugStj5p3XTAUbWSuu 7OlkaWD8x9zFyMkhIWAiseL3DXYIW0ziwr31bF2MXBxCAksZJX513WSBcLqYJPrmPWYDqWIT UJP43PAIyObgEBFQl/h1wwmkhlmgkVni1vP9TCA1wgL2EusmbwabyiKgKrHr6hwWkHpeAU2J A/tTQML8QK3vtj0FKxcVcJN4sW8LWDmngIvE5c+LwVYJCThLvJ17ixHE5hUQlPgx+R4LiM0s IC+xb/9UVghbS2L9zuNMExgFZyEpm4WkbBaSsgWMzKsYRVNLkwuKk9JzDfWKE3OLS/PS9ZLz czcxQiLmyw7GxcesDjEKcDAq8fCuYF0aJMSaWFZcmXuIUYKDWUmEV2wXUIg3JbGyKrUoP76o NCe1+BAjEwenVAOjXmi70ZargnJ7Z6/V37wvXlzOwnp+tflS5sRzez+YtuXtnPnrwlfBpVp3 A6ZVfJP0nu95OiyoMf6d34TSp85Tp9hXFLjfnDbpVcHWQ8ZTk9foz9Cr8Dkue+vD6eJb0adl 2CYHTy7p99/4/ZZi+Y7zF0/lXOP8ULGCWWjefanimro9pZL/lQpMlFiKMxINtZiLihMBqQ54 rXYCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Daniel, On Thursday 21 of November 2013 02:21:24 Daniel Kurtz wrote: > These tables are all immutable, make them const to save 4416 bytes of RAM. > > size arch/arm/mach-exynos/pmu.o > text data bss > 848 4420 4 // before > 5264 4 4 // after I'm not sure where the mentioned saving of RAM is. Moving data between sections is not supposed to make it use less memory, I believe. Anyway, it's a good practice to mark constant data as const, to disallow changing them at runtime by mistake, so the patch is fine. Except some issues I commented on inline. Reviewed-by: Tomasz Figa Best regards, Tomasz