libnvdimm: introduce 'flags' attribute for DIMM 'lock' and 'alias' status (efbf6f50) · Commits · 戴 / test

Given that we now how have two mechanisms for a DIMM to indicate that it is locked: * NVDIMM_FAMILY_INTEL 'get_config_size' _DSM command * ACPI 6.2 Label Storage Read / Write commands ...export the generic libnvdimm DIMM status in a new 'flags' attribute. This attribute can also reflect the 'alias' state which indicates whether the nvdimm core is enforcing labels for aliased-region-capacity that the given dimm is an interleave-set member. Signed-off-by:

Dan Williams <dan.j.williams@intel.com>

drivers/nvdimm/dimm_devs.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -331,6 +331,17 @@ static ssize_t commands_show(struct device *dev,
		}
		static DEVICE_ATTR_RO(commands);

		static ssize_t flags_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		struct nvdimm *nvdimm = to_nvdimm(dev);

		return sprintf(buf, "%s%s\n",
		test_bit(NDD_ALIASING, &nvdimm->flags) ? "alias " : "",
		test_bit(NDD_LOCKED, &nvdimm->flags) ? "lock " : "");
		}
		static DEVICE_ATTR_RO(flags);

		static ssize_t state_show(struct device dev, struct device_attribute attr,
		char *buf)
		{
		@@ -372,6 +383,7 @@ static DEVICE_ATTR_RO(available_slots);

		static struct attribute *nvdimm_attributes[] = {
		&dev_attr_state.attr,
		&dev_attr_flags.attr,
		&dev_attr_commands.attr,
		&dev_attr_available_slots.attr,
		NULL,

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