1 files changed, 12 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 9c978dcae07d..2447698aed41 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -173,3 +173,15 @@ Description:	Processor frequency boosting control
                 Boosting allows the CPU and the firmware to run at a frequency
                 beyound it's nominal limit.
                 More details can be found in Documentation/cpu-freq/boost.txt
+
+
+What:           /sys/devices/system/cpu/cpu#/crash_notes
+                /sys/devices/system/cpu/cpu#/crash_notes_size
+Date:           April 2013
+Contact:        kexec@lists.infradead.org
+Description:    address and size of the percpu note.
+
+                crash_notes: the physical address of the memory that holds the
+                note of cpu#.
+
+                crash_notes_size: size of the note of cpu#.