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| author | Dave Jiang <dave.jiang@intel.com> | 2017-04-07 15:33:25 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-12 21:56:42 -0700 |
| commit | 802f4be6feee3f0395c26ac9717da5b15f6b8fec (patch) | |
| tree | 94aa31dd73e3f504d75dd6caf1d7cdb243e11890 /drivers/nvdimm/region_devs.c | |
| parent | 6a6bef90425e8cba7c53919d923240559b7f247c (diff) | |
| download | linux-802f4be6feee3f0395c26ac9717da5b15f6b8fec.tar.gz linux-802f4be6feee3f0395c26ac9717da5b15f6b8fec.tar.bz2 linux-802f4be6feee3f0395c26ac9717da5b15f6b8fec.zip | |
libnvdimm: Add 'resource' sysfs attribute to regions
Adding sysfs attribute in order to export the physical address of the
region. This is for supporting of user app poison clear via
ND_IOCTL_CLEAR_ERROR.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index 3500fc84d939..8de5a04644a1 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -463,6 +463,15 @@ static struct device_attribute dev_attr_nd_badblocks = { .show = nd_badblocks_show, }; +static ssize_t resource_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nd_region *nd_region = to_nd_region(dev); + + return sprintf(buf, "%#llx\n", nd_region->ndr_start); +} +static DEVICE_ATTR_RO(resource); + static struct attribute *nd_region_attributes[] = { &dev_attr_size.attr, &dev_attr_nstype.attr, @@ -476,6 +485,7 @@ static struct attribute *nd_region_attributes[] = { &dev_attr_namespace_seed.attr, &dev_attr_init_namespaces.attr, &dev_attr_nd_badblocks.attr, + &dev_attr_resource.attr, NULL, }; @@ -495,6 +505,9 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n) if (!is_nd_pmem(dev) && a == &dev_attr_nd_badblocks.attr) return 0; + if (!is_nd_pmem(dev) && a == &dev_attr_resource.attr) + return 0; + if (a != &dev_attr_set_cookie.attr && a != &dev_attr_available_size.attr) return a->mode; |