From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 120E43B1AC; Fri, 1 Mar 2024 22:37:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332659; cv=none; b=CKvsZXxV80dgFHy/hFaq8ABR175RcLx51439/xKDNdXoPDVxlLG0fWVJWoej4mfvPQJ4Q/eY85pz9P06W7lOCSxs/waLjvh5kmi46Bx1cdtOZ89Bt64/PzNvZH4x1fmrT6a571dhgIftT/FOq/pGi0EJsRgVGOXj0dxunOuhVHo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332659; c=relaxed/simple; bh=K4FXhxgJ5WSgughmjmci9utjXhKkjJc3y1ukbSp1ugE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YnPWfN6a9UMfud2u6qW50EO9zdV5H0SLIqaSB/T1jClWcXCE3tILLnzh7WGDtJPS8VqtpxYd8y4/qh259NMtvnWFUWlVdwlkpTranaOy91bEgfEqyKoxY+y01v/9JXMLqfd14DrIDglPZGPdnTIxCJ6tqzyrSKNBM0iXFzv2Cos= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A5B3C433F1; Fri, 1 Mar 2024 22:37:38 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: vishal.l.verma@intel.com Subject: [NDCTL PATCH v8 4/4] ndctl: Add support of qos_class for CXL CLI Date: Fri, 1 Mar 2024 15:36:39 -0700 Message-ID: <20240301223736.1380778-1-dave.jiang@intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Vishal, With the QoS class series merged to the v6.8 kernel, can you please review and apply this series to ndctl if acceptable? v8: - Move qos_class comparison to libcxl. (Vishal) - Move check to validate_decoder(). (Vishal) - Update test to pick decoder that will always work. (Vishal) - Fix script style. (Vishal) v7: - Removed qos restriction flag entirely (Alison) - Added check for invalid qos_class when doing json output - Change -q to -Q (Vishal) - Add qos_class_mismatched to region output for cxl list (Vishal) - Add -Q test in cxl-qos-class.sh test (Vishal) - Change verify behavior to only do qos matching with -Q (Vishal/Dan) v6: - Check return value of create_region_validate_qos_class() (Wonjae) v5: - split out test from cxl-topology.sh (Vishal) v4: - Update against changes in kernel from multi to single qos_class entry - Add test in cxl-topology.sh (Dan) - See individual patch log for details v3: - Rebase against latest ndctl/pending branch. The series adds support for the kernel enabling of QoS class in the v6.8 kernel. The kernel exports a qos_class token for the root decoders (CFMWS) and as well as for the CXL memory devices. The qos_class exported for a device is calculated by the driver during device probe. Currently a qos_class is exported for the volatile partition (ram) and another for the persistent partition (pmem). In the future qos_class will be exported for DCD regions. Display of qos_class is through the CXL CLI list command with -vvv for extra verbose. A qos_class check as also been added for region creation. A warning is emitted when the qos_class of a memory range of a CXL memory device being included in the CXL region assembly does not match the qos_class of the root decoder. Options are available to suppress the warning or to fail the region creation. This enabling provides a guidance on flagging memory ranges being used is not optimal for performance for the CXL region to be formed.