diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2022-11-30 12:23:01 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-12-01 12:42:35 -0800 |
| commit | 452996fa079b1a8751a02ac04c54b1d69f512249 (patch) | |
| tree | 02ba5235eb484f97e652873cb61edd9231a96cde | |
| parent | 18fa556375c0e28f067f4a52e9f11d4fd2cf6842 (diff) | |
cxl/pmem: add provider name to cxl pmem dimm attribute group
Add provider name in order to associate cxl test dimm from cxl_test to the
cxl pmem device when going through sysfs for security testing.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166983618174.2734609.15600031015423828810.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-nvdimm | 8 | ||||
| -rw-r--r-- | drivers/cxl/pmem.c | 10 |
2 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm index 178ce207413d..de8c5a59c77f 100644 --- a/Documentation/ABI/testing/sysfs-bus-nvdimm +++ b/Documentation/ABI/testing/sysfs-bus-nvdimm @@ -47,3 +47,11 @@ Date: November 2022 KernelVersion: 6.2 Contact: Dave Jiang <dave.jiang@intel.com> Description: (RO) Show the id (serial) of the device. This is CXL specific. + +What: /sys/bus/nd/devices/nmemX/cxl/provider +Date: November 2022 +KernelVersion: 6.2 +Contact: Dave Jiang <dave.jiang@intel.com> +Description: (RO) Shows the CXL bridge device that ties to a CXL memory device + to this NVDIMM device. I.e. the parent of the device returned is + a /sys/bus/cxl/devices/memX instance. diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 0493ddcfe32c..403e41bcbf2b 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -51,6 +51,15 @@ static void unregister_nvdimm(void *nvdimm) cxl_nvd->bridge = NULL; } +static ssize_t provider_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct nvdimm *nvdimm = to_nvdimm(dev); + struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm); + + return sysfs_emit(buf, "%s\n", dev_name(&cxl_nvd->dev)); +} +static DEVICE_ATTR_RO(provider); + static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct nvdimm *nvdimm = to_nvdimm(dev); @@ -63,6 +72,7 @@ static DEVICE_ATTR_RO(id); static struct attribute *cxl_dimm_attributes[] = { &dev_attr_id.attr, + &dev_attr_provider.attr, NULL }; |