--- man-pages-2.54/man5/proc.5	2007-05-16 11:25:50.000000000 -0700
+++ man-pages-2.54/man5/proc.5.new	2007-06-09 10:23:22.000000000 -0700
@@ -274,8 +410,18 @@
 are not available if the main thread has already terminated
 (typically by calling
 .BR pthread_exit (3)).
-.\" FIXME Describe /proc/[number]/seccomp
-.\"       Added in 2.6.12
+.TP
+.IR /proc/[number]/seccomp " (since Linux 2.6.12)"
+Secure computing mode 1 only allows the process [number] to
+.BR read (2),
+.BR write (2),
+.BR exit (2),
+and
+.BR sigreturn (2).
+Using
+.BR setrlimit (2)
+to limit stack allocations is recommended for security.
+It is impossible to disable once enabled.
 .TP
 .IR /proc/[number]/smaps " (since Linux 2.6.14)"
 This file shows memory consumption for each of the process's mappings.