Documentation: SECCOMP_RET_INFO return value

index 1e469ef..ffddf9f 100644
@@ -49,6 +49,7 @@ CONFIG_HAVE_ARCH_SECCOMP_FILTER, then filters may be added as below:
 PR_SET_SECCOMP:
 	Now takes an additional argument which specifies a new filter
 	using a BPF program.
+
 	The BPF program will be executed over struct seccomp_data
 	reflecting the system call number, arguments, and other
 	metadata.  The BPF program must then return one of the

@@ -138,6 +139,12 @@ SECCOMP_RET_TRACE:
 	allow use of ptrace, even of other sandboxed processes, without
 	extreme care; ptracers can use this mechanism to escape.)
 
+SECCOMP_RET_INFO:
+	Results in a rate-limited informational kernel message that
+	includes the system call number, and the system call is
+	executed.  The message format is:
+	"seccomp: syscall=x", where x is the system call number.
+
 SECCOMP_RET_ALLOW:
 	Results in the system call being executed.