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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 A716FC433DB for ; Wed, 6 Jan 2021 01:30:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3E4C122D01 for ; Wed, 6 Jan 2021 01:30:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3E4C122D01 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C22318D00D5; Tue, 5 Jan 2021 20:30:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BB3E78D00D1; Tue, 5 Jan 2021 20:30:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A987A8D00D5; Tue, 5 Jan 2021 20:30:39 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0062.hostedemail.com [216.40.44.62]) by kanga.kvack.org (Postfix) with ESMTP id 908638D00D1 for ; Tue, 5 Jan 2021 20:30:39 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 5E3163626 for ; Wed, 6 Jan 2021 01:30:39 +0000 (UTC) X-FDA: 77673620598.16.brass51_620efd2274dd Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin16.hostedemail.com (Postfix) with ESMTP id 373DB100E690B for ; Wed, 6 Jan 2021 01:30:39 +0000 (UTC) X-HE-Tag: brass51_620efd2274dd X-Filterd-Recvd-Size: 4313 Received: from so254-31.mailgun.net (so254-31.mailgun.net [198.61.254.31]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Wed, 6 Jan 2021 01:30:37 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1609896638; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=ETA3clmAvn/B/mpBCmmAdxyVPaH7nyP6YvdiUhf6Ljs=; b=mz7pQfrVb3lrjlbCZRtFgJt8oCKV2cHPWxzoUd509eg+oAfaydWGkIJW57LrDU3qKQZecIZf td5Kdf2Yk4xu8UXGcRkmAmq5N4u6D8kQ3fPTkOtHDl9nMmH8ukkd7ZJ8Pvobf5D8HpyRhpgT AE9qNfl/ZwMopmnc0fHza3paC38= X-Mailgun-Sending-Ip: 198.61.254.31 X-Mailgun-Sid: WyIwY2Q3OCIsICJsaW51eC1tbUBrdmFjay5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n02.prod.us-west-2.postgun.com with SMTP id 5ff512acb100ecf37a446ed9 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 06 Jan 2021 01:30:20 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 14EE7C433CA; Wed, 6 Jan 2021 01:30:20 +0000 (UTC) Received: from th-lint-014.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sudaraja) by smtp.codeaurora.org (Postfix) with ESMTPSA id 29F53C433C6; Wed, 6 Jan 2021 01:30:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 29F53C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=sudaraja@codeaurora.org From: Sudarshan Rajagopalan To: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Sudarshan Rajagopalan Subject: [PATCH 1/1] arm64: make section size configurable for memory hotplug Date: Tue, 5 Jan 2021 17:28:46 -0800 Message-Id: <66f79b0c06602c22df4da8ff4a5c2b97c9275250.1609895500.git.sudaraja@codeaurora.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Currently on arm64, memory section size is hard-coded to 1GB. Make this configurable if memory-hotplug is enabled, to support more finer granularity for hotplug-able memory. Signed-off-by: Sudarshan Rajagopalan --- arch/arm64/Kconfig | 11 +++++++++++ arch/arm64/include/asm/sparsemem.h | 4 ++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6d232837cbee..34124eee65da 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -294,6 +294,17 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE config SMP def_bool y =20 +config HOTPLUG_SIZE_BITS + int "Memory hotplug block size(29 =3D> 512MB 30 =3D> 1GB)" + depends on SPARSEMEM + depends on MEMORY_HOTPLUG + range 28 30 + default 30 + help + Selects granularity of hotplug memory. Block size for + memory hotplug is represent as a power of 2. + If unsure, stick with default value. + config KERNEL_MODE_NEON def_bool y =20 diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/= sparsemem.h index 1f43fcc79738..3d5310f3aad5 100644 --- a/arch/arm64/include/asm/sparsemem.h +++ b/arch/arm64/include/asm/sparsemem.h @@ -7,7 +7,11 @@ =20 #ifdef CONFIG_SPARSEMEM #define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS +#ifndef CONFIG_MEMORY_HOTPLUG #define SECTION_SIZE_BITS 30 +#else +#define SECTION_SIZE_BITS CONFIG_HOTPLUG_SIZE_BITS +#endif #endif =20 #endif --=20 Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project