diff --git a/neutron_lib/utils/host.py b/neutron_lib/utils/host.py
index b6c15e4d1..a447a0b59 100644
--- a/neutron_lib/utils/host.py
+++ b/neutron_lib/utils/host.py
@@ -15,6 +15,11 @@ import multiprocessing
 
 
 def cpu_count():
+    """Get the system CPU count.
+
+    :returns: The number of CPUs on the system as an int. If there's an issue
+    fetching the CPU count on the system, a default value of 1 is returned.
+    """
     try:
         return multiprocessing.cpu_count()
     except NotImplementedError: