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authorToshi Kani <toshi.kani@hp.com>2015-06-19 12:18:34 -0600
committerDan Williams <dan.j.williams@intel.com>2015-06-26 11:23:38 -0400
commit74ae66c3b14ffa94c8d2dea201cdf8e6203d13d5 (patch)
tree471a82ba5030b23c258a094aa9e1ee816e227c31 /drivers/nvdimm/btt_devs.c
parent41d7a6d637e1440f5410cb43c25a3c41255540c5 (diff)
downloadlinux-74ae66c3b14ffa94c8d2dea201cdf8e6203d13d5.tar.bz2
libnvdimm: Add sysfs numa_node to NVDIMM devices
Add support of sysfs 'numa_node' to I/O-related NVDIMM devices under /sys/bus/nd/devices, regionN, namespaceN.0, and bttN.x. An example of numa_node values on a 2-socket system with a single NVDIMM range on each socket is shown below. /sys/bus/nd/devices |-- btt0.0/numa_node:0 |-- btt1.0/numa_node:1 |-- btt1.1/numa_node:1 |-- namespace0.0/numa_node:0 |-- namespace1.0/numa_node:1 |-- region0/numa_node:0 |-- region1/numa_node:1 These numa_node files are then linked under the block class of their device names. /sys/class/block/pmem0/device/numa_node:0 /sys/class/block/pmem1s/device/numa_node:1 This enables numactl(8) to accept 'block:' and 'file:' paths of pmem and btt devices as shown in the examples below. numactl --preferred block:pmem0 --show numactl --preferred file:/dev/pmem1s --show Signed-off-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/btt_devs.c')
-rw-r--r--drivers/nvdimm/btt_devs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c
index 661aacedc140..6ac8c0fea3ec 100644
--- a/drivers/nvdimm/btt_devs.c
+++ b/drivers/nvdimm/btt_devs.c
@@ -293,6 +293,7 @@ static struct attribute_group nd_btt_attribute_group = {
static const struct attribute_group *nd_btt_attribute_groups[] = {
&nd_btt_attribute_group,
&nd_device_attribute_group,
+ &nd_numa_attribute_group,
NULL,
};