From: Dave Jiang <dave.jiang@intel.com>
To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev
Cc: vishal.l.verma@intel.com
Subject: [NDCTL PATCH v3 0/3] ndctl: Add support of qos_class for CXL CLI
Date: Wed, 24 Jan 2024 13:54:35 -0700 [thread overview]
Message-ID: <170612961495.2745924.4942817284170536877.stgit@djiang5-mobl3> (raw)
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?
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.
---
Dave Jiang (3):
ndctl: cxl: Add QoS class retrieval for the root decoder
ndctl: cxl: Add QoS class support for the memory device
ndctl: cxl: add QoS class check for CXL region creation
Documentation/cxl/cxl-create-region.txt | 9 ++++
cxl/filter.h | 4 ++
cxl/json.c | 46 ++++++++++++++++-
cxl/lib/libcxl.c | 62 +++++++++++++++++++++++
cxl/lib/libcxl.sym | 3 ++
cxl/lib/private.h | 3 ++
cxl/libcxl.h | 10 ++++
cxl/list.c | 1 +
cxl/region.c | 67 ++++++++++++++++++++++++-
util/json.h | 1 +
10 files changed, 204 insertions(+), 2 deletions(-)
--
next reply other threads:[~2024-01-24 20:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-24 20:54 Dave Jiang [this message]
2024-01-24 20:54 ` [NDCTL PATCH v3 1/3] ndctl: cxl: Add QoS class retrieval for the root decoder Dave Jiang
2024-01-26 17:45 ` Alison Schofield
2024-01-24 20:54 ` [NDCTL PATCH v3 2/3] ndctl: cxl: Add QoS class support for the memory device Dave Jiang
2024-01-26 18:01 ` Alison Schofield
2024-01-30 20:48 ` Dave Jiang
2024-01-24 20:54 ` [NDCTL PATCH v3 3/3] ndctl: cxl: add QoS class check for CXL region creation Dave Jiang
2024-01-26 18:14 ` Alison Schofield
2024-01-30 20:53 ` Dave Jiang
2024-01-25 21:16 ` [NDCTL PATCH v3 0/3] ndctl: Add support of qos_class for CXL CLI Dan Williams
2024-01-25 21:40 ` Dave Jiang
2024-01-25 22:07 ` Dan Williams
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