kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

libnvdimm: Add 'resource' sysfs attribute to regions

Browse source 
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>
This commit is contained in:
Dave Jiang 2017-04-07 15:33:25 -07:00 committed by Dan Williams
parent 6a6bef9042
commit 802f4be6fe
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/nvdimm/region_devs.c
View file

@ -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[] = {
&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)
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;