Commit 802f4be6 authored by Dave Jiang's avatar Dave Jiang Committed by Dan Williams

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: default avatarDave Jiang <dave.jiang@intel.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 6a6bef90
...@@ -463,6 +463,15 @@ static struct device_attribute dev_attr_nd_badblocks = { ...@@ -463,6 +463,15 @@ static struct device_attribute dev_attr_nd_badblocks = {
.show = nd_badblocks_show, .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[] = { static struct attribute *nd_region_attributes[] = {
&dev_attr_size.attr, &dev_attr_size.attr,
&dev_attr_nstype.attr, &dev_attr_nstype.attr,
...@@ -476,6 +485,7 @@ static struct attribute *nd_region_attributes[] = { ...@@ -476,6 +485,7 @@ static struct attribute *nd_region_attributes[] = {
&dev_attr_namespace_seed.attr, &dev_attr_namespace_seed.attr,
&dev_attr_init_namespaces.attr, &dev_attr_init_namespaces.attr,
&dev_attr_nd_badblocks.attr, &dev_attr_nd_badblocks.attr,
&dev_attr_resource.attr,
NULL, NULL,
}; };
...@@ -495,6 +505,9 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n) ...@@ -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) if (!is_nd_pmem(dev) && a == &dev_attr_nd_badblocks.attr)
return 0; return 0;
if (!is_nd_pmem(dev) && a == &dev_attr_resource.attr)
return 0;
if (a != &dev_attr_set_cookie.attr if (a != &dev_attr_set_cookie.attr
&& a != &dev_attr_available_size.attr) && a != &dev_attr_available_size.attr)
return a->mode; return a->mode;
......
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