From 74ae66c3b14ffa94c8d2dea201cdf8e6203d13d5 Mon Sep 17 00:00:00 2001 From: Toshi Kani <toshi.kani@hp.com> Date: Fri, 19 Jun 2015 12:18:34 -0600 Subject: 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> --- drivers/acpi/nfit.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index d96c8fe974dd..2161fa178c8d 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -873,6 +873,7 @@ static const struct attribute_group *acpi_nfit_region_attribute_groups[] = { &nd_region_attribute_group, &nd_mapping_attribute_group, &nd_device_attribute_group, + &nd_numa_attribute_group, &acpi_nfit_region_attribute_group, NULL, }; -- cgit v1.2.3-70-g09d2