saving uncommitted changes in /etc prior to emerge run

conf.d/cpupower

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+# /etc/conf.d/cpupower: config file for /etc/init.d/cpupower
+
+# Options when starting cpufreq (given to the `cpupower` program)
+# Possible options are:
+# -g --governor <GOV> (ie: ondemand, performance, or powersave)
+# -d --min <FREQ> (ie: 1000MHz)
+# -u --max <FREQ> (ie: 2000MHz)
+# -f --freq <FREQ> (requires userspace governor, this *can not* be combined with
+#                   with any other parameters).
+# Frequencies can be passed in Hz, kHz (default), MHz, GHz, or THz by postfixing the
+# value with  the  wanted  unit name, without any space.
+# (frequency in kHz =^ Hz * 0.001 =^ MHz * 1000 =^ GHz * 1000000).
+
+START_OPTS="--governor ondemand"
+
+# Options when stopping cpufreq (given to the `cpupower` program)
+# This option can be used to change governer on stop. Leaving it empty will ensure
+# the governer remains on the one provided above.
+STOP_OPTS=""
+
+# Extra settings to write to sysfs cpufreq values.
+#
+# up_threshold: threshold for stepping up frequency, where the value represents
+# the percentage of cpu load. 
+#
+# down_threshold: threshold for stepping down frequency, where the value
+# represents the percentage of cpu load.
+#
+# sampling_down_factor: determines how frequently the governor polls the cpu, a
+# value greater than 1 improves performance by reducing the polling when the
+# load is high. This tunable has no effect on behavior at lower CPU frequencies.
+#
+# ignore_nice_load: when set to '1' the processes that are run with a 'nice'
+# value will not count in the usage calculation.
+
+#SYSFS_EXTRA="ondemand/ignore_nice_load=1 ondemand/up_threshold=75 ondemand/sampling_down_factor=10"