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selftests/intel_pstate: Improve test, minor fixes

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A few changes improve the overall usability of the test:
* fix a hard-coded maximum frequency (3300),
* don't adjust the CPU frequency if only evaluating results,
* fix a comparison for multiple frequencies.

A symptom of that last issue looked like this:
  ./run.sh: line 107: [: too many arguments
  ./run.sh: line 110: 3099
  3099
  3100-3100: syntax error in expression (error token is \"3099
  3100-3100\")

Because a check will count how many differente frequencies
there are among the CPUs of the system, and after they are
tallied another read is performed, which might produce
different results.

Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
This commit is contained in:
Daniel Díaz 2018-04-10 17:11:15 -05:00 committed by Shuah Khan (Samsung OSG)
parent 478b27844e
commit e9d33f149f
1 changed files with 10 additions and 14 deletions
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24
tools/testing/selftests/intel_pstate/run.sh
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@ -51,11 +51,12 @@ function run_test () {
echo "sleeping for 5 seconds"
sleep 5
num_freqs=$(cat /proc/cpuinfo | grep MHz | sort -u | wc -l)
if [ $num_freqs -le 2 ]; then
cat /proc/cpuinfo | grep MHz | sort -u | tail -1 > /tmp/result.$1
grep MHz /proc/cpuinfo | sort -u > /tmp/result.freqs
num_freqs=$(wc -l /tmp/result.freqs | awk ' { print $1 } ')
if [ $num_freqs -ge 2 ]; then
tail -n 1 /tmp/result.freqs > /tmp/result.$1
else
cat /proc/cpuinfo | grep MHz | sort -u > /tmp/result.$1
cp /tmp/result.freqs /tmp/result.$1
fi
./msr 0 >> /tmp/result.$1
@ -85,21 +86,20 @@ _max_freq=$(cpupower frequency-info -l | tail -1 | awk ' { print $2 } ')
max_freq=$(($_max_freq / 1000))
for freq in `seq $max_freq -100 $min_freq`
[ $EVALUATE_ONLY -eq 0 ] && for freq in `seq $max_freq -100 $min_freq`
do
echo "Setting maximum frequency to $freq"
cpupower frequency-set -g powersave --max=${freq}MHz >& /dev/null
[ $EVALUATE_ONLY -eq 0 ] && run_test $freq
run_test $freq
done
echo "=============================================================================="
[ $EVALUATE_ONLY -eq 0 ] && cpupower frequency-set -g powersave --max=${max_freq}MHz >& /dev/null
echo "=============================================================================="
echo "The marketing frequency of the cpu is $mkt_freq MHz"
echo "The maximum frequency of the cpu is $max_freq MHz"
echo "The minimum frequency of the cpu is $min_freq MHz"
cpupower frequency-set -g powersave --max=${max_freq}MHz >& /dev/null
# make a pretty table
echo "Target Actual Difference MSR(0x199) max_perf_pct"
for freq in `seq $max_freq -100 $min_freq`
@ -107,10 +107,6 @@ do
result_freq=$(cat /tmp/result.${freq} | grep "cpu MHz" | awk ' { print $4 } ' | awk -F "." ' { print $1 } ')
msr=$(cat /tmp/result.${freq} | grep "msr" | awk ' { print $3 } ')
max_perf_pct=$(cat /tmp/result.${freq} | grep "max_perf_pct" | awk ' { print $2 } ' )
if [ $result_freq -eq $freq ]; then
echo " $freq $result_freq 0 $msr $(($max_perf_pct*3300))"
else
echo " $freq $result_freq $(($result_freq-$freq)) $msr $(($max_perf_pct*$max_freq))"
fi
echo " $freq $result_freq $(($result_freq-$freq)) $msr $(($max_perf_pct*$max_freq))"
done
exit 0