From patchwork Mon May 27 06:45:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zhijian X-Patchwork-Id: 13674644 Received: from esa6.hc1455-7.c3s2.iphmx.com (esa6.hc1455-7.c3s2.iphmx.com [68.232.139.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BEFDE17BBF for ; Mon, 27 May 2024 06:47:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.139.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716792426; cv=none; b=NlUoY0cvbQJtlb/X5x4LWwT456Y12MZuzM/ntn4PugIHjiRn7uGMrrWtR5YFOtI6oFsz9oyw1a9D8oHXl/UbGZ7Qo9K4Wk1Kr0r8lyukikJQadkenEq31tqH0mNbPEqVxQ/ec3HsSTECPJgFzlJ/FdtUC/Nn5n+pbbYeUQmDNM8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716792426; c=relaxed/simple; bh=BcokBG31RIq2vbFCGm1102SQQoWJEZIhpCd4S1uIbJ8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jxpmbDTO4skZXWGAZHWYovlGs/OqxJ3pz3t2K9t1tO7I2NKDgdZjg3vqaZBcGFvoAHrFD92mBov4wPq7pcdbHAhNF5jdDv3hsefA7Yg6Gcx7FB86ELFKtlDtgD81oZ+JQq7CPBUDWiuOTNaVOB/37V6It3d69thh8+K+4ba+prw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fujitsu.com; spf=pass smtp.mailfrom=fujitsu.com; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b=FedDaZhA; arc=none smtp.client-ip=68.232.139.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b="FedDaZhA" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=fujitsu.com; i=@fujitsu.com; q=dns/txt; s=fj2; t=1716792425; x=1748328425; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BcokBG31RIq2vbFCGm1102SQQoWJEZIhpCd4S1uIbJ8=; b=FedDaZhAV2asxLtViHJJ6J3TZ7SGUFwtHIe5f8f+W+bhbKYL1NjWdLJf Sx9Ptzl1M7farTWXBqWxrVc3KeU/F/K1QJFBY5I9tzWAyrDnDvaS/6RWT B0DNK428HvNrTP5hbSn6OM18WF1lVPFtibw0JJ5pQ15IE1I2mG/C85OeU NaDtVo7CVHX7sqNGHY+QbRitPqQLvOZlnohv/6u3muUysLxYtq+fy6WRD yA4HC+HRP2PIY7CsM6W5G5+1CCYYyCQ60gzxrsSFuvv5FT9UgiDwA+OIE jVNK0FeMw6GfWCi38RUZwJpq/2h9s9OzJkU0qDFYwMYOyTGR53Q+WH1wG A==; X-IronPort-AV: E=McAfee;i="6600,9927,11084"; a="162285740" X-IronPort-AV: E=Sophos;i="6.08,191,1712588400"; d="scan'208";a="162285740" Received: from unknown (HELO oym-r3.gw.nic.fujitsu.com) ([210.162.30.91]) by esa6.hc1455-7.c3s2.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2024 15:45:53 +0900 Received: from oym-m3.gw.nic.fujitsu.com (oym-nat-oym-m3.gw.nic.fujitsu.com [192.168.87.60]) by oym-r3.gw.nic.fujitsu.com (Postfix) with ESMTP id 47709CA1EA for ; Mon, 27 May 2024 15:45:51 +0900 (JST) Received: from kws-ab4.gw.nic.fujitsu.com (kws-ab4.gw.nic.fujitsu.com [192.51.206.22]) by oym-m3.gw.nic.fujitsu.com (Postfix) with ESMTP id 763FFD73A8 for ; Mon, 27 May 2024 15:45:50 +0900 (JST) Received: from edo.cn.fujitsu.com (edo.cn.fujitsu.com [10.167.33.5]) by kws-ab4.gw.nic.fujitsu.com (Postfix) with ESMTP id 0CC212239F0 for ; Mon, 27 May 2024 15:45:50 +0900 (JST) Received: from localhost.localdomain (unknown [10.167.226.45]) by edo.cn.fujitsu.com (Postfix) with ESMTP id 9D1471A000C; Mon, 27 May 2024 14:45:49 +0800 (CST) From: Li Zhijian To: nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org Cc: Li Zhijian Subject: [ndctl PATCH 2/2] daxctl: Fix create-device manual Date: Mon, 27 May 2024 14:45:39 +0800 Message-Id: <20240527064539.819487-2-lizhijian@fujitsu.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240527064539.819487-1-lizhijian@fujitsu.com> References: <20240527064539.819487-1-lizhijian@fujitsu.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSS-9.1.0.1417-9.0.0.1002-28412.005 X-TM-AS-User-Approved-Sender: Yes X-TMASE-Version: IMSS-9.1.0.1417-9.0.1002-28412.005 X-TMASE-Result: 10--2.187100-10.000000 X-TMASE-MatchedRID: n1gbV5OfaTUZHQl0dvECsfsgrpDX6v2eTJDl9FKHbrk6FHRWx2FGsI3c eRXYSJoDIvrftAIhWmJwk5p7o69tnQQBdUgWg+akdqNHliz4AWdAApRfVHzqNL8r2YKZauYGUHw ogQlwTkm/CU9ohIHhuE/hQBftKoDgIQJt3nwJw/BIcJTn2HkqsZ0JB6wB6Cqm/gMNehoKqTtSDH rkR3VZi7DvP+hClj+P0m70v5AMjBFVLEbPNu9Klwrcxrzwsv5uUrr7Qc5WhKhR965L821jzDbhh Nf8h3mb4vM1YF6AJbbCCfuIMF6xLSdET58jp62SdtpFtAk6aGii3lCeAQ44COMpWTAf6sgyfHnV g5nrEt5+V/VnK6LQVLB+v6+QiPLRGSORX8zrVelCTGHVw2pg4VUkhRnV9rSXwGC8e6520fKw0PJ t06oJaHpaQl5xviY7wxgWdRvK9Un9g+oMf9KM6Q== X-TMASE-SNAP-Result: 1.821001.0001-0-1-22:0,33:0,34:0-0 create-device can accept more options, see `daxctl help create-device` or the code for more details. Reuse reconfigure options from reconfigure-device and include movable options. Signed-off-by: Li Zhijian --- Documentation/daxctl/daxctl-create-device.txt | 2 + .../daxctl/daxctl-reconfigure-device.txt | 39 +----------------- Documentation/daxctl/reconfigure-options.txt | 40 +++++++++++++++++++ 3 files changed, 43 insertions(+), 38 deletions(-) create mode 100644 Documentation/daxctl/reconfigure-options.txt diff --git a/Documentation/daxctl/daxctl-create-device.txt b/Documentation/daxctl/daxctl-create-device.txt index 05f4dbd9d61c..ad6f177fa3b9 100644 --- a/Documentation/daxctl/daxctl-create-device.txt +++ b/Documentation/daxctl/daxctl-create-device.txt @@ -72,6 +72,8 @@ EFI memory map with EFI_MEMORY_SP. The resultant ranges mean that it's OPTIONS ------- include::region-option.txt[] +include::movable-options.txt[] +include::reconfigure-options.txt[] -s:: --size=:: diff --git a/Documentation/daxctl/daxctl-reconfigure-device.txt b/Documentation/daxctl/daxctl-reconfigure-device.txt index 09691d202514..32f28a5b8e82 100644 --- a/Documentation/daxctl/daxctl-reconfigure-device.txt +++ b/Documentation/daxctl/daxctl-reconfigure-device.txt @@ -196,47 +196,10 @@ include::region-option.txt[] This option is mutually exclusive with -m or --mode. --m:: ---mode=:: - Specify the mode to which the dax device(s) should be reconfigured. - - "system-ram": hotplug the device into system memory. - - - "devdax": switch to the normal "device dax" mode. This requires the - kernel to support hot-unplugging 'kmem' based memory. If this is not - available, a reboot is the only way to switch back to 'devdax' mode. - --N:: ---no-online:: - By default, memory sections provided by system-ram devices will be - brought online automatically and immediately with the 'online_movable' - policy. Use this option to disable the automatic onlining behavior. - --C:: ---check-config:: - Get reconfiguration parameters from the global daxctl config file. - This is typically used when daxctl-reconfigure-device is called from - a systemd-udevd device unit file. The reconfiguration proceeds only - if the match parameters in a 'reconfigure-device' section of the - config match the dax device specified on the command line. See the - 'PERSISTENT RECONFIGURATION' section for more details. +include::reconfigure-options.txt[] include::movable-options.txt[] --f:: ---force:: - - When converting from "system-ram" mode to "devdax", it is expected - that all the memory sections are first made offline. By default, - daxctl won't touch online memory. However with this option, attempt - to offline the memory on the NUMA node associated with the dax device - before converting it back to "devdax" mode. - - - Additionally, if a kernel policy to auto-online blocks is detected, - reconfiguration to system-ram fails. With this option, the failure can - be overridden to allow reconfiguration regardless of kernel policy. - Doing this may result in a successful reconfiguration, but it may - not be possible to subsequently offline the memory without a reboot. - - include::human-option.txt[] include::verbose-option.txt[] diff --git a/Documentation/daxctl/reconfigure-options.txt b/Documentation/daxctl/reconfigure-options.txt new file mode 100644 index 000000000000..f174729eb023 --- /dev/null +++ b/Documentation/daxctl/reconfigure-options.txt @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 + + +-m:: +--mode=:: + Specify the mode to which the dax device(s) should be reconfigured. + - "system-ram": hotplug the device into system memory. + + - "devdax": switch to the normal "device dax" mode. This requires the + kernel to support hot-unplugging 'kmem' based memory. If this is not + available, a reboot is the only way to switch back to 'devdax' mode. + +-N:: +--no-online:: + By default, memory sections provided by system-ram devices will be + brought online automatically and immediately with the 'online_movable' + policy. Use this option to disable the automatic onlining behavior. + +-C:: +--check-config:: + Get reconfiguration parameters from the global daxctl config file. + This is typically used when daxctl-reconfigure-device is called from + a systemd-udevd device unit file. The reconfiguration proceeds only + if the match parameters in a 'reconfigure-device' section of the + config match the dax device specified on the command line. See the + 'PERSISTENT RECONFIGURATION' section for more details. + +-f:: +--force:: + - When converting from "system-ram" mode to "devdax", it is expected + that all the memory sections are first made offline. By default, + daxctl won't touch online memory. However with this option, attempt + to offline the memory on the NUMA node associated with the dax device + before converting it back to "devdax" mode. + + - Additionally, if a kernel policy to auto-online blocks is detected, + reconfiguration to system-ram fails. With this option, the failure can + be overridden to allow reconfiguration regardless of kernel policy. + Doing this may result in a successful reconfiguration, but it may + not be possible to subsequently offline the memory without a reboot.