The following commit has been merged in the linux branch: commit 657348a056eea4a27be20cf8e22c98a252597447 Author: Alex Chiang achiang@hp.com Date: Wed Oct 21 22:15:30 2009 -0600

Documentation: ABI: /sys/devices/system/cpu/cpu#/node

Describe NUMA node symlink created for CPUs when CONFIG_NUMA is set.

Cc: Randy Dunlap randy.dunlap@oracle.com Signed-off-by: Alex Chiang achiang@hp.com Signed-off-by: Greg Kroah-Hartman gregkh@suse.de

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 968d8ba..a703b9e 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -62,6 +62,21 @@ Description: CPU topology files that describe kernel limits related to See Documentation/cputopology.txt for more information.

+ +What: /sys/devices/system/cpu/cpu#/node +Date: October 2009 +Contact: Linux memory management mailing list linux-mm@kvack.org +Description: Discover NUMA node a CPU belongs to + + When CONFIG_NUMA is enabled, a symbolic link that points + to the corresponding NUMA node directory. + + For example, the following symlink is created for cpu42 + in NUMA node 2: + + /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2 + + What: /sys/devices/system/cpu/cpu#/topology/core_id /sys/devices/system/cpu/cpu#/topology/core_siblings /sys/devices/system/cpu/cpu#/topology/core_siblings_list