From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8845C4361B for ; Mon, 14 Dec 2020 15:28:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 739F722B47 for ; Mon, 14 Dec 2020 15:28:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407694AbgLNP2l (ORCPT ); Mon, 14 Dec 2020 10:28:41 -0500 Received: from elvis.franken.de ([193.175.24.41]:40271 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732397AbgLNP2G (ORCPT ); Mon, 14 Dec 2020 10:28:06 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kopkv-0006Cf-00; Mon, 14 Dec 2020 16:27:21 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id A40ECC0375; Mon, 14 Dec 2020 16:19:25 +0100 (CET) Date: Mon, 14 Dec 2020 16:19:25 +0100 From: Thomas Bogendoerfer To: Tiezhu Yang Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Xuefeng Li Subject: Re: [PATCH v2] MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to enable sysfs memblock debug Message-ID: <20201214151925.GA9149@alpha.franken.de> References: <1607343702-28318-1-git-send-email-yangtiezhu@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1607343702-28318-1-git-send-email-yangtiezhu@loongson.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 07, 2020 at 08:21:42PM +0800, Tiezhu Yang wrote: > In the current code, CONFIG_ARCH_KEEP_MEMBLOCK is not set for MIPS arch, > memblock_discard() will discard memory and reserved arrays if they were > allocated, select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to give a chance to > track "memory" and "reserved" memblocks after early boot, with this patch, > we can see the following two sysfs interfaces under DEBUG_FS. > > /sys/kernel/debug/memblock/memory > /sys/kernel/debug/memblock/reserved > > Signed-off-by: Tiezhu Yang > --- > > v2: > - select ARCH_KEEP_MEMBLOCK only if DEBUG_KERNEL > > arch/mips/Kconfig | 1 + > 1 file changed, 1 insertion(+) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]