From patchwork Fri May 3 21:32:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Verma, Vishal L" X-Patchwork-Id: 10929223 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 08BC115A6 for ; Fri, 3 May 2019 21:32:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EE1B128724 for ; Fri, 3 May 2019 21:32:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E249628796; Fri, 3 May 2019 21:32:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 5F33D28724 for ; Fri, 3 May 2019 21:32:44 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id B4BC22124B93A; Fri, 3 May 2019 14:32:43 -0700 (PDT) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=vishal.l.verma@intel.com; receiver=linux-nvdimm@lists.01.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 0693B21219AE5 for ; Fri, 3 May 2019 14:32:41 -0700 (PDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 May 2019 14:32:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,427,1549958400"; d="scan'208";a="145838660" Received: from vverma7-desk1.lm.intel.com ([10.232.112.185]) by fmsmga008.fm.intel.com with ESMTP; 03 May 2019 14:32:40 -0700 From: Vishal Verma To: Subject: [ndctl PATCH 0/8] daxctl: add a new reconfigure-device command Date: Fri, 3 May 2019 15:32:23 -0600 Message-Id: <20190503213231.12280-1-vishal.l.verma@intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dave Hansen , Pavel Tatashin Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP Add a new daxctl-reconfigure-device command that lets us reconfigure DAX devices back and forth between 'system-ram' and 'device-dax' modes. It also includes facilities to online any newly hot-plugged memory (default), and attempt to offline memory before converting away from the system-ram mode (not default, requires a --attempt-offline option). Currently missing from this series is a way to persistently store which devices have been 'marked' for use as system-ram. This depends on a config system overhaul in ndctl, and patches for those will follow separately and are independent of this work. Cc: Dan Williams Cc: Dave Hansen Cc: Pavel Tatashin Vishal Verma (8): libdaxctl: add interfaces in support of device modes libdaxctl: cache 'subsystem' in daxctl_ctx daxctl: add libdaxctl interfaces to enable/disable devices ndctl: add helpers to get/set the online state for a node daxctl: add a new reconfigure-device command Documentation/daxctl: add a man page for daxctl-reconfigure-device contrib/ndctl: fix region-id completions for daxctl contrib/ndctl: add bash-completion for daxctl-reconfigure-device Documentation/daxctl/Makefile.am | 3 +- .../daxctl/daxctl-reconfigure-device.txt | 74 +++ contrib/ndctl | 34 +- daxctl/Makefile.am | 2 + daxctl/builtin.h | 1 + daxctl/daxctl.c | 1 + daxctl/device.c | 217 ++++++++ daxctl/lib/Makefile.am | 3 +- daxctl/lib/libdaxctl-private.h | 21 + daxctl/lib/libdaxctl.c | 511 +++++++++++++++++- daxctl/lib/libdaxctl.sym | 13 + daxctl/libdaxctl.h | 15 + 12 files changed, 884 insertions(+), 11 deletions(-) create mode 100644 Documentation/daxctl/daxctl-reconfigure-device.txt create mode 100644 daxctl/device.c