3
# Laptop mode tools module to handle CPU frequency settings.
8
# Set kernel setting, showing an error if this fails.
9
# Parameter 1: sysctl/proc path
10
# Parameter 2: the value
12
$LM_VERBOSE && echo "Executing: echo $2 > $1" >> $OUTPUT
13
if ! echo "$2" > "$1" ; then
14
echo "SETTING OF KERNEL PARAMETER FAILED: echo $2 \> $1"
22
# Get the medium value from a list of numerical values.
23
# $1 = file containing the list of values
26
cat "$1" | tr ' ' '\n' | sort -n | awk -v RS="" '{n=split($0,a); print a[int((n+1)/2)]}'
30
if [ x$CONTROL_CPU_FREQUENCY = x1 ] ; then
31
if [ $ON_AC -eq 1 ] ; then
32
if [ "$ACTIVATE" -eq 1 ] ; then
33
CPU_MAXFREQ="$LM_AC_CPU_MAXFREQ"
34
CPU_MINFREQ="$LM_AC_CPU_MINFREQ"
35
CPU_GOVERNOR="$LM_AC_CPU_GOVERNOR"
36
CPU_IGNORE_NICE_LOAD="$LM_AC_CPU_IGNORE_NICE_LOAD"
38
CPU_MAXFREQ="$NOLM_AC_CPU_MAXFREQ"
39
CPU_MINFREQ="$NOLM_AC_CPU_MINFREQ"
40
CPU_GOVERNOR="$NOLM_AC_CPU_GOVERNOR"
41
CPU_IGNORE_NICE_LOAD="$NOLM_AC_CPU_IGNORE_NICE_LOAD"
44
CPU_MAXFREQ="$BATT_CPU_MAXFREQ"
45
CPU_MINFREQ="$BATT_CPU_MINFREQ"
46
CPU_GOVERNOR="$BATT_CPU_GOVERNOR"
47
CPU_IGNORE_NICE_LOAD="$BATT_CPU_IGNORE_NICE_LOAD"
49
for THISCPU in /sys/devices/system/cpu/* ; do
50
if [ -e $THISCPU/cpufreq/cpuinfo_min_freq ]; then
51
THIS_CPU_MAXFREQ="$CPU_MAXFREQ"
52
THIS_CPU_MINFREQ="$CPU_MINFREQ"
53
THIS_CPU_GOVERNOR="$CPU_GOVERNOR"
54
THIS_CPU_IGNORE_NICE_LOAD="$CPU_IGNORE_NICE_LOAD"
56
case "$CPU_MAXFREQ" in
58
THIS_CPU_MAXFREQ=`cat $THISCPU/cpufreq/cpuinfo_min_freq`
61
THIS_CPU_MAXFREQ=$(get_medium_value $THISCPU/cpufreq/scaling_available_frequencies)
64
THIS_CPU_MAXFREQ=`cat $THISCPU/cpufreq/cpuinfo_max_freq`
68
case "$CPU_MINFREQ" in
70
THIS_CPU_MINFREQ=`cat $THISCPU/cpufreq/cpuinfo_min_freq`
73
THIS_CPU_MINFREQ=$(get_medium_value $THISCPU/cpufreq/scaling_available_frequencies)
76
THIS_CPU_MINFREQ=`cat $THISCPU/cpufreq/cpuinfo_max_freq`
80
$LM_VERBOSE && echo "Setting CPU maximum frequency for cpu $THISCPU to $THIS_CPU_MAXFREQ." >> $OUTPUT
81
set_sysctl $THISCPU/cpufreq/scaling_max_freq $THIS_CPU_MAXFREQ
82
$LM_VERBOSE && echo "Setting CPU minimum frequency for cpu $THISCPU to $THIS_CPU_MINFREQ." >> $OUTPUT
83
set_sysctl $THISCPU/cpufreq/scaling_min_freq $THIS_CPU_MINFREQ
84
$LM_VERBOSE && echo "Setting CPU frequency governor for cpu $THISCPU to $THIS_CPU_GOVERNOR." >> $OUTPUT
85
/sbin/modprobe -q cpufreq_$THIS_CPU_GOVERNOR >> $OUTPUT 2>&1
86
set_sysctl $THISCPU/cpufreq/scaling_governor $THIS_CPU_GOVERNOR
87
if [ -f "$THISCPU/cpufreq/$THIS_CPU_GOVERNOR/ignore_nice_load" ] ; then
88
$LM_VERBOSE && echo "Setting CPU ignore_nice_load for cpu $THISCPU to $THIS_CPU_IGNORE_NICE_LOAD." >> $OUTPUT
89
set_sysctl $THISCPU/cpufreq/$THIS_CPU_GOVERNOR/ignore_nice_load $THIS_CPU_IGNORE_NICE_LOAD
91
$LM_VERBOSE && echo "Not setting CPU ignore_nice_load for cpu $THISCPU." >> $OUTPUT
92
$LM_VERBOSE && echo "File $THISCPU/cpufreq/$THIS_CPU_GOVERNOR/ignore_nice_load does not exist." >> $OUTPUT
98
if [ x$CONTROL_CPU_THROTTLING = x1 ] ; then
99
if [ $ON_AC -eq 1 ] ; then
100
if [ "$ACTIVATE" -eq 1 ] ; then
101
CPU_THROTTLING="$LM_AC_CPU_THROTTLING"
103
CPU_THROTTLING="$NOLM_AC_CPU_THROTTLING"
106
CPU_THROTTLING="$BATT_CPU_THROTTLING"
108
for THISCPU in /proc/acpi/processor/* ; do
109
if [ -e $THISCPU/throttling ]; then
110
NUM_LEVELS=`cat $THISCPU/throttling | grep "T[0123456789]*\:" | wc -l`
111
case "$CPU_THROTTLING" in
113
THIS_CPU_THROTTLING=0
116
# Divide but round up: that way, "medium" on a two-level system will
117
# lead to full throttling -- which is 50% on my system, quite reasonable.
118
THIS_CPU_THROTTLING=$(( ($NUM_LEVELS / 2 ) ))
121
THIS_CPU_THROTTLING=$(($NUM_LEVELS - 1))
124
THIS_CPU_THROTTLING="$CPU_THROTTLING"
127
$LM_VERBOSE && echo "Setting throttling level for cpu $THISCPU to $THIS_CPU_THROTTLING." >> $OUTPUT
128
set_sysctl $THISCPU/throttling $THIS_CPU_THROTTLING
added
removed
usr/share/laptop-mode-tools/modules/cpufreq
