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| author | Toshi Kani <toshi.kani@hp.com> | 2015-06-19 12:18:34 -0600 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-26 11:23:38 -0400 |
| commit | 74ae66c3b14ffa94c8d2dea201cdf8e6203d13d5 (patch) | |
| tree | 471a82ba5030b23c258a094aa9e1ee816e227c31 /drivers/nvdimm/btt_devs.c | |
| parent | 41d7a6d637e1440f5410cb43c25a3c41255540c5 (diff) | |
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.c | 1 |
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, }; |