From 65d876ee94d2e8e637aae3646fb4145020adc2a0 Mon Sep 17 00:00:00 2001
From: Jason Gross <jgross@mit.edu>
Date: Fri, 13 Oct 2017 17:28:54 -0400
Subject: Support machines without controllable cpu speed

---
 etc/governor.sh | 3 +++
 etc/machine.sh  | 8 ++++++++
 2 files changed, 11 insertions(+)

(limited to 'etc')

diff --git a/etc/governor.sh b/etc/governor.sh
index 4e11cf2fd..3b059fd70 100755
--- a/etc/governor.sh
+++ b/etc/governor.sh
@@ -13,6 +13,9 @@ for cpu in "/sys/devices/system/cpu/cpu"[0-9]* ; do
   if grep -vq '^1$' "$cpu/online" 2>/dev/null; then
     continue
   fi
+  if [ ! -e "$cpu/cpufreq/scaling_available_governors" ]; then
+    continue
+  fi
   generators="$(cat "$cpu/cpufreq/scaling_available_governors")"
   if [ "$#" -eq 0 ] || [ -z "$1" ]; then
     usage "$generators"
diff --git a/etc/machine.sh b/etc/machine.sh
index 69edb149a..b57f52679 100755
--- a/etc/machine.sh
+++ b/etc/machine.sh
@@ -2,12 +2,20 @@
 set -eu
 
 online_governors() {
+  FOUND=""
   for cpu in "/sys/devices/system/cpu/cpu"[0-9]* ; do
     if grep -vq '^1$' "$cpu/online" 2>/dev/null; then
       continue
     fi
+    if [ ! -e "$cpu/cpufreq" ]; then
+      continue
+    fi
     cat "$cpu/cpufreq/scaling_governor"
+    FOUND=1
   done
+  if [ -z "$FOUND" ]; then
+    echo "nocpufreq_support"
+  fi
 }
 
 printf "$(hostname)"
-- 
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