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authorAlex Chiang <achiang@hp.com>2009-10-21 22:15:30 -0600
committerGreg Kroah-Hartman <gregkh@suse.de>2009-10-30 14:59:53 -0700
commit657348a056eea4a27be20cf8e22c98a252597447 (patch)
treea2b429aec0813fffb72200383cf421584efb24fe
parentc1fb5c475126b77b47ba762f5b48535cd0420d24 (diff)
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>
-rw-r--r--Documentation/ABI/testing/sysfs-devices-system-cpu15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 968d8bad3835..a703b9e9aeb9 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