From: Toshi Kani Date: Fri, 19 Jun 2015 18:18:34 +0000 (-0600) Subject: libnvdimm: Add sysfs numa_node to NVDIMM devices X-Git-Tag: omap-for-v4.3/legacy-v2-signed~102^2~1 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74ae66c3b14ffa94c8d2dea201cdf8e6203d13d5;p=pandora-kernel.git 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 Signed-off-by: Dan Williams --- Reading git-diff-tree failed