From efbf6f50ada168b68f5e3de474bc8dee4a02d046 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 25 Sep 2017 10:24:26 -0700 Subject: [PATCH] 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 --- drivers/nvdimm/dimm_devs.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index 5f1385b..097794d 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, -- 2.7.4