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From: Alison Schofield <alison.schofield@intel.com>
To: Dave Jiang <dave.jiang@intel.com>
Cc: linux-cxl@vger.kernel.org, linux-acpi@vger.kernel.org,
	Dan Williams <dan.j.williams@intel.com>,
	ira.weiny@intel.com, vishal.l.verma@intel.com, rafael@kernel.org,
	lukas@wunner.de
Subject: Re: [PATCH v2 21/21] cxl/mem: Add debugfs output for QTG related data
Date: Tue, 28 Mar 2023 18:13:42 -0700	[thread overview]
Message-ID: <ZCOQxrpyXNABVbsK@aschofie-mobl2> (raw)
In-Reply-To: <167995357195.2857312.5279274659737251140.stgit@djiang5-mobl3>

On Mon, Mar 27, 2023 at 02:46:11PM -0700, Dave Jiang wrote:
> Add debugfs output to /sys/kernel/debug/cxl/memX/qtgmap
> The debugfs attribute will dump out all the DSMAS ranges and the associated
> QTG ID exported by the CXL device CDAT.

Do you want to document these?

The poison inject & clear inflight patchset documents in: 
Documentation/ABI/testing/debugfs-cxl

Alison

> 
> Suggested-by: Dan Williams <dan.j.williams@intel.com>
> Signed-off-by: Dave Jiang <dave.jiang@intel.com>
> ---
>  drivers/cxl/mem.c |   16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
> index 39c4b54f0715..bf2cb5a54a7f 100644
> --- a/drivers/cxl/mem.c
> +++ b/drivers/cxl/mem.c
> @@ -45,6 +45,21 @@ static int cxl_mem_dpa_show(struct seq_file *file, void *data)
>  	return 0;
>  }
>  
> +static int cxl_mem_qtg_show(struct seq_file *file, void *data)
> +{
> +	struct device *dev = file->private;
> +	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
> +	struct qos_prop_entry *qos;
> +
> +	list_for_each_entry(qos, &cxlmd->qos_list, list) {
> +		seq_printf(file, "%08llx-%08llx : QTG ID %u\n",
> +			   qos->dpa_range.start, qos->dpa_range.end,
> +			   qos->qtg_id);
> +	}
> +
> +	return 0;
> +}
> +
>  static int devm_cxl_add_endpoint(struct device *host, struct cxl_memdev *cxlmd,
>  				 struct cxl_dport *parent_dport)
>  {
> @@ -117,6 +132,7 @@ static int cxl_mem_probe(struct device *dev)
>  
>  	dentry = cxl_debugfs_create_dir(dev_name(dev));
>  	debugfs_create_devm_seqfile(dev, "dpamem", dentry, cxl_mem_dpa_show);
> +	debugfs_create_devm_seqfile(dev, "qtgmap", dentry, cxl_mem_qtg_show);
>  	rc = devm_add_action_or_reset(dev, remove_debugfs, dentry);
>  	if (rc)
>  		return rc;
> 
> 

  reply	other threads:[~2023-03-29  1:13 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-27 21:44 [PATCH v2 00/21] cxl: Add support for QTG ID retrieval for CXL subsystem Dave Jiang
2023-03-27 21:44 ` [PATCH v2 01/21] cxl: Export QTG ids from CFMWS to sysfs Dave Jiang
2023-03-29 23:57   ` Ira Weiny
2023-03-27 21:44 ` [PATCH v2 02/21] cxl: Add checksum verification to CDAT from CXL Dave Jiang
2023-03-29  0:03   ` Alison Schofield
2023-03-29  0:21     ` Dave Jiang
2023-03-30  0:09   ` Ira Weiny
2023-03-27 21:44 ` [PATCH v2 03/21] cxl: Add support for reading CXL switch CDAT table Dave Jiang
2023-03-30  0:19   ` Ira Weiny
2023-03-27 21:44 ` [PATCH v2 04/21] cxl: Add common helpers for cdat parsing Dave Jiang
2023-03-27 21:44 ` [PATCH v2 05/21] cxl: Add callback to parse the DSMAS subtables from CDAT Dave Jiang
2023-03-29  0:20   ` Alison Schofield
2023-03-29 20:41     ` Dave Jiang
2023-03-30 15:43   ` Dave Jiang
2023-03-27 21:44 ` [PATCH v2 06/21] cxl: Add callback to parse the DSLBIS subtable " Dave Jiang
2023-03-29  0:44   ` Alison Schofield
2023-03-29 20:59     ` Dave Jiang
2023-03-29 21:59       ` Alison Schofield
2023-03-27 21:44 ` [PATCH v2 07/21] cxl: Add callback to parse the SSLBIS " Dave Jiang
2023-03-27 21:44 ` [PATCH v2 08/21] cxl: Add support for _DSM Function for retrieving QTG ID Dave Jiang
2023-03-27 21:44 ` [PATCH v2 09/21] cxl: Add helper function to retrieve ACPI handle of CXL root device Dave Jiang
2023-03-27 21:45 ` [PATCH v2 10/21] cxl: Add helpers to calculate pci latency for the CXL device Dave Jiang
2023-03-27 21:45 ` [PATCH v2 11/21] cxl: Add helper function that calculates QoS values for switches Dave Jiang
2023-03-27 21:45 ` [PATCH v2 12/21] cxl: Add helper function that calculate QoS values for PCI path Dave Jiang
2023-03-27 21:45 ` [PATCH v2 13/21] ACPI: NUMA: Add genport target allocation to the HMAT parsing Dave Jiang
2023-03-27 21:45 ` [PATCH v2 14/21] ACPI: NUMA: Add helper function to retrieve the performance attributes Dave Jiang
2023-03-27 21:45 ` [PATCH v2 15/21] cxl: Add helper function to retrieve generic port QoS Dave Jiang
2023-03-27 21:45 ` [PATCH v2 16/21] cxl: Add latency and bandwidth calculations for the CXL path Dave Jiang
2023-03-27 21:45 ` [PATCH v2 17/21] cxl: Wait Memory_Info_Valid before access memory related info Dave Jiang
2023-03-27 21:45 ` [PATCH v2 18/21] cxl: Move identify and partition query from pci probe to port probe Dave Jiang
2023-03-27 21:46 ` [PATCH v2 19/21] cxl: Store QTG IDs and related info to the CXL memory device context Dave Jiang
2023-03-27 21:46 ` [PATCH v2 20/21] cxl: Export sysfs attributes for memory device QTG ID Dave Jiang
2023-03-29  1:27   ` Alison Schofield
2023-03-29 21:44     ` Dave Jiang
2023-03-29 21:55   ` Dan Williams
2023-03-29 22:02     ` Dave Jiang
2023-03-27 21:46 ` [PATCH v2 21/21] cxl/mem: Add debugfs output for QTG related data Dave Jiang
2023-03-29  1:13   ` Alison Schofield [this message]
2023-03-29 21:49     ` Dave Jiang
2023-03-28 17:45 ` [PATCH v2 00/21] cxl: Add support for QTG ID retrieval for CXL subsystem Dave Jiang

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