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diff --git a/html/hints/solaris.xtra.patchfreq b/html/hints/solaris.xtra.patchfreq
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+#!/bin/ksh
+
+#
+# File:         patchfreq
+# Author:       Bryan Cantrill (bmc@eng.sun.com), Solaris Performance
+# Modified:     Sat Apr 26 04:00:59 PDT 1997
+#
+# This is a little script to patch a 5.5 or 5.5.1 kernel to get around
+# the cpu_tick_freq inaccuracy.  Before running this script, one must
+# know the true frequency of one's CPU;  this can be derived by NTP,
+# or by observing the clock relative to the time-of-day chip over a
+# long period of time (the TOD will pull system time when it drifts
+# by more than two seconds).
+#
+# Patching a kernel can render a machine unbootable;  do not run this
+# script unless you are prepared to accept that possibility.  It
+# is advisable to have a backout path (e.g. net booting, an alternate
+# boot disk, an installation CD) should your machine fail to boot.
+#
+# This is not a product of Sun Microsystems, and is provided "as is",
+# without warranty of any kind expressed or implied including, but not
+# limited to, the suitability of this script for any purpose.
+#
+
+if [ $# -eq 0 ]; then
+        echo "Usage:  $0 cpu_tick_freq [ alternate_kernel ]"
+        exit 1
+fi
+
+cpu_tick_freq=$1
+kernel=/platform/sun4u/kernel/unix
+
+if [ $# -eq 2 ]; then
+        kernel=$2
+fi
+
+if [ ! -w $kernel ]; then
+        echo "$0:  Cannot open $kernel for writing."
+        exit 1
+fi
+
+arch=`echo utsname+404?s | adb $kernel | cut -d: -f2`
+
+if [ ! $arch = "sun4u" ]; then
+        echo "Patch only applies to sun4u"
+        exit 1
+fi
+
+rel=`echo utsname+202?s | adb $kernel | cut -d: -f2`
+
+if [ ! $rel = "5.5" ] && [ ! $rel = "5.5.1" ]; then
+        echo "Patch only applies to 5.5 or 5.5.1..."
+        exit 1
+fi
+
+nop="1000000"           # nop
+store_mask="ffffe000"   # mask out low 13 bits
+store="da256000"        # st      %o5, [%l5 + offset]
+
+instr=`echo setcpudelay+34?X | adb $kernel | cut -d: -f 2 | nawk '{ print $1 }'`
+
+if [ $instr = $nop ]; then
+        echo "Instruction already patched..."
+else
+        let masked="(16#$store_mask & 16#$instr) - 16#$store"
+        if [ $masked -ne 0 ]; then
+                echo "Couldn't find instruction to patch;  aborting."
+                exit 1
+        fi
+
+        if ! echo setcpudelay+34?W $nop | adb -w $kernel 1> /dev/null
+        then
+                echo "adb returned an unexpected error;  aborting."
+        fi
+fi
+
+echo "Patching cpu_tick_freq to $cpu_tick_freq..."
+
+if ! echo cpu_tick_freq?W 0t$cpu_tick_freq | adb -w $kernel 1> /dev/null; then
+        echo "adb returned an unexpected error;  aborting."
+        exit 1
+fi
+
+echo "$kernel successfully patched."
+exit 0