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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 12F2AC433F5 for ; Thu, 31 Mar 2022 02:48:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=rRHpKDhGvTUyqNYdtgsj0GmqEdZj3cUMA+xZBLoFS84=; b=31EO8hEUCr0CV+ 5HKYlE8+AEv46vSSHR+xEHdkM6MnxhdfYxRkx4yfToozguoLZC9r4TsPW8p0Vwv2sJ0AJiXYaddB/ f7Q2+taAxGGULAUOLe/j7XM8Tiyy/XhDWLdPssB0fKLPiV0mr3hgAReKftja0uFaPK2nYvc/WOUwK LrhVEyqBBeaz/+EHta0OAALXdx7Fr6J8rhg6obdioZDkFd7SNL9JKkiqcdc5pOW94Rdtg67d0s+SB wdZR+/k31yWTrpgOa8lOpTI3bzb3M3o+qtiS/mYrc+i+Ti0J9rili/nidsPiC8jNVHRi4pEMEL1OO /Q1Q9MldaXootx5/rofw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nZkqS-000LlI-RU; Thu, 31 Mar 2022 02:47:32 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nZkpy-000LZd-Sv for linux-arm-kernel@lists.infradead.org; Thu, 31 Mar 2022 02:47:06 +0000 Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KTSMh0DxfzgYBv; Thu, 31 Mar 2022 10:45:20 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Thu, 31 Mar 2022 10:46:59 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Thu, 31 Mar 2022 10:46:59 +0800 From: Kefeng Wang To: , , , CC: , , Kefeng Wang Subject: [PATCH v2 0/3] arm64: mm: Do not defer reserve_crashkernel() Date: Thu, 31 Mar 2022 10:59:43 +0800 Message-ID: <20220331025946.51163-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220330_194703_138674_5D17B9A0 X-CRM114-Status: UNSURE ( 6.55 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Commit 031495635b46 ("arm64: Do not defer reserve_crashkernel() for platforms with no DMA memory zones"), this lets the kernel benifit due to BLOCK_MAPPINGS, we could do more if ZONE_DMA and ZONE_DMA32 enabled. 1) Don't defer reserve_crashkernel() if only ZONE_DMA32 2) Don't defer reserve_crashkernel() if ZONE_DMA with dma_force_32bit kernel parameter(newly added) Unixbench benchmark result shows between the block mapping and page mapping. ----------------+------------------+------------------- | block mapping | page mapping ----------------+------------------+------------------- Process Creation| 5,030.7 | 4,711.8 (in unixbench) | | ----------------+------------------+------------------- note: RODATA_FULL_DEFAULT_ENABLED is not enabled v2: - update patch1 according to Vijay and Florian, and RB of Vijay - add new patch2 Kefeng Wang (3): arm64: mm: Do not defer reserve_crashkernel() if only ZONE_DMA32 arm64: mm: Don't defer reserve_crashkernel() with dma_force_32bit arm64: mm: Cleanup useless parameters in zone_sizes_init() arch/arm64/include/asm/kexec.h | 1 + arch/arm64/mm/init.c | 59 +++++++++++++++++++++++++--------- arch/arm64/mm/mmu.c | 6 ++-- 3 files changed, 46 insertions(+), 20 deletions(-) -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel