[PATCH v3 2/3] libnvdimm: Set numa_node to NVDIMM devices

Toshi Kani
2015-06-19T18:18:33Z

ACPI NFIT table has System Physical Address Range Structure
entries that describe a proximity ID of each range when
ACPI_NFIT_PROXIMITY_VALID is set in the flags.

Change acpi_nfit_register_region() to map a proximity ID to its
node ID, and set it to a new numa_node field of nd_region_desc,
which is then conveyed to nd_region.

nd_region_probe() and nd_btt_probe() set the numa_node of nd_region
to their device object being probed. A namespace device inherits
the numa_node from the parent region device.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
---
drivers/acpi/nfit.c | 6 ++++++
drivers/nvdimm/btt.c | 2 ++
drivers/nvdimm/nd.h | 1 +
drivers/nvdimm/region.c | 1 +
drivers/nvdimm/region_devs.c | 1 +
include/linux/libnvdimm.h | 1 +
6 files changed, 12 insertions(+)

diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index 5f64582..5997753 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -1392,6 +1392,12 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc,
ndr_desc->res = &res;
ndr_desc->provider_data = nfit_spa;
ndr_desc->attr_groups = acpi_nfit_region_attribute_groups;
+ if (spa->flags & ACPI_NFIT_PROXIMITY_VALID)
+ ndr_desc->numa_node = acpi_map_pxm_to_online_node(
+ spa->proximity_domain);
+ else
+ ndr_desc->numa_node = NUMA_NO_NODE;
+
list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) {
struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev;
struct nd_mapping *nd_mapping;
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 57d3b27..ab082e5 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1495,6 +1495,8 @@ static int nd_btt_probe(struct device *dev)
rc = -ENOMEM;
goto err_btt;
}
+
+ set_dev_node(dev, nd_region->numa_node);
dev_set_drvdata(dev, btt);

return 0;
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 011d7c5..0bfd20a 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -93,6 +93,7 @@ struct nd_region {
u64 ndr_size;
u64 ndr_start;
int id, num_lanes;
+ int numa_node;
void *provider_data;
struct nd_interleave_set *nd_set;
struct nd_mapping mapping[0];
diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c
index d9d82e7..a764ca6 100644
--- a/drivers/nvdimm/region.c
+++ b/drivers/nvdimm/region.c
@@ -123,6 +123,7 @@ static int nd_region_probe(struct device *dev)

num_ns->active = rc;
num_ns->count = rc + err;
+ set_dev_node(dev, nd_region->numa_node);
dev_set_drvdata(dev, num_ns);

if (err == 0)
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index bb9f329..703dfae 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -632,6 +632,7 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus,
nd_region->provider_data = ndr_desc->provider_data;
nd_region->nd_set = ndr_desc->nd_set;
nd_region->num_lanes = ndr_desc->num_lanes;
+ nd_region->numa_node = ndr_desc->numa_node;
ida_init(&nd_region->ns_ida);
dev = &nd_region->dev;
dev_set_name(dev, "region%d", nd_region->id);
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index dc799a2..30b3dea 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -89,6 +89,7 @@ struct nd_region_desc {
struct nd_interleave_set *nd_set;
void *provider_data;
int num_lanes;
+ int numa_node;
};

struct nvdimm_bus;