yes, I'm very commit lazy

awesome/src/tools/helpers/cpu_freq.lua

@@ -1,30 +1,34 @@
-local awful = require("awful")
-local watch = awful.widget.watch
+local gobject = require('gears.object')
+local watch = require('awful.widget.watch')
 
-local capi = {
-  awesome = awesome,
-}
+local instance = nil
 
-watch(
-  [[ bash -c "cat /proc/cpuinfo | grep "MHz" | awk '{print int($4)}'" ]],
-  3,
-  function(_, stdout)
+local function new()
+  local self = gobject {}
+
+  watch("bash -c \"cat /proc/cpuinfo | grep 'MHz' | awk '{print int($4)}'\"", 2, function(_, stdout)
     local cpu_freq = {}
 
-    for value in stdout:gmatch("%d+") do
+    for value in stdout:gmatch('%d+') do
       table.insert(cpu_freq, value)
     end
 
     local average = 0
-
-    if User_config.clock_mode == "average" then
+    if User_config.clock_mode == 'average' then
       for i = 1, #cpu_freq do
         average = average + cpu_freq[i]
       end
-      average = math.floor(average / #cpu_freq)
-      capi.awesome.emit_signal("update::cpu_freq_average", average)
+      average = math.floor((average / #cpu_freq) + 0.5)
+      self:emit_signal('update::cpu_freq_average', average)
     elseif User_config.clock_mode then
-      capi.awesome.emit_signal("update::cpu_freq_core", cpu_freq[User_config.clock_mode])
+      self:emit_signal('update::cpu_freq_core', cpu_freq[User_config.clock_mode])
     end
-  end
-)
+  end)
+
+  return self
+end
+
+if not instance then
+  instance = new()
+end
+return instance