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

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

drivers/nvdimm/region_devs.c

+13 −0
Original line number Diff line number Diff line
@@ -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;