From 3eb500b11a3faf768cf96fd6034141eff6ffa83c Mon Sep 17 00:00:00 2001
From: Jason Gross <jgross@mit.edu>
Date: Fri, 15 Sep 2017 16:27:58 -0400
Subject: Update etc scripts to include governor

It needs to be in performance, not powersave, to work well on my
machine.

While we're at it, also have the scripts print usage if you pass no
arguments, rather than giving an error message about $1 being unset.
---
 etc/machine.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'etc/machine.sh')

diff --git a/etc/machine.sh b/etc/machine.sh
index 5fcb7289a..69edb149a 100755
--- a/etc/machine.sh
+++ b/etc/machine.sh
@@ -1,6 +1,15 @@
 #!/bin/sh
 set -eu
 
+online_governors() {
+  for cpu in "/sys/devices/system/cpu/cpu"[0-9]* ; do
+    if grep -vq '^1$' "$cpu/online" 2>/dev/null; then
+      continue
+    fi
+    cat "$cpu/cpufreq/scaling_governor"
+  done
+}
+
 printf "$(hostname)"
 printf -
 grep -q '[^0-9]' /sys/devices/system/cpu/cpu[0-9]*/topology/thread_siblings_list && printf ht || printf noht
@@ -17,5 +26,7 @@ else
   printf nops
 fi
 printf -
+printf "$(echo -n "$(online_governors | uniq)" | tr '\n' '_')"
+printf -
 printf "$(gcc -march=native -Q --help=target|grep march | cut -d= -f2 | grep -ow '\S*')"
 printf '\n'
-- 
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