diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ab86766e28cb6d3929e60a2f73bed5c44c5afe95..e81e1d0d8d78f7cc330edaf652b5b748cafc2a90 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -465,6 +465,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
 	audit=		[KNL] Enable the audit sub-system
 			Format: { "0" | "1" } (0 = disabled, 1 = enabled)
+			0 - kernel audit is disabled and can not be enabled
+			    until the next reboot
+			unset - kernel audit is initialized but disabled and
+			    will be fully enabled by the userspace auditd.
+			1 - kernel audit is initialized and partially enabled,
+			    storing at most audit_backlog_limit messages in
+			    RAM until it is fully enabled by the userspace
+			    auditd.
 			Default: unset
 			
 	audit_backlog_limit= [KNL] Set the audit queue size limit.