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| author | Dan Williams <dan.j.williams@intel.com> | 2017-09-25 10:24:26 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-10-07 10:04:06 -0700 |
| commit | efbf6f50ada168b68f5e3de474bc8dee4a02d046 (patch) | |
| tree | 411d9aafc359561708f056c67951d22f9ac8bbaf /drivers/nvdimm/dimm_devs.c | |
| parent | 4b27db7e26cdb9deb4a211e963e2993fde0110cb (diff) | |
| download | lwn-efbf6f50ada168b68f5e3de474bc8dee4a02d046.tar.gz lwn-efbf6f50ada168b68f5e3de474bc8dee4a02d046.zip | |
libnvdimm: introduce 'flags' attribute for DIMM 'lock' and 'alias' status
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>
Diffstat (limited to 'drivers/nvdimm/dimm_devs.c')
| -rw-r--r-- | drivers/nvdimm/dimm_devs.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index 5f1385b96b13..097794d9f786 100644 --- a/drivers/nvdimm/dimm_devs.c +++ b/drivers/nvdimm/dimm_devs.c @@ -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, |