Changes in cpufreq_06.sh to calculate summatory and average of frequency measurements.

Bug: The tests for frequency deviation always fails with 'Err' Cause and solution: In the function 'compute_freq_ratio' the frequency is stored in an array of variables by indirect reference (http://www.tldp.org/LDP/abs/html/ivr.html) but the variable 'index' that points to next element in the array is initialized to 0 every time hence overriding the values. The same happens for the function 'compute_freq_ratio_sum' where the 'index' variable is always initialized to 0 and the variable 'sum' is always set to 0 not adding the subsequent values. Hence these initializations must be deleted from those functions and written into the 'function check_deviation' for keeping the correct values of frequency and calculations of average and summatory. With these changes the tests can now calculate the real values of average for the frequencies and the deviations can be tested and the tests now passes.

Signed-off-by: Saul Romero saul.romero@arm.com --- cpufreq/cpufreq_06.sh | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/cpufreq/cpufreq_06.sh b/cpufreq/cpufreq_06.sh index b323dc8..8f1dc22 100755 --- a/cpufreq/cpufreq_06.sh +++ b/cpufreq/cpufreq_06.sh @@ -31,7 +31,6 @@ CPUCYCLE=../utils/cpucycle freq_results_array="results"

compute_freq_ratio() { - index=0 cpu=$1 freq=$2

@@ -49,25 +48,18 @@ compute_freq_ratio() { }

compute_freq_ratio_sum() { - index=0 - sum=0 - res=$(eval echo $$freq_results_array$index) sum=$(echo $sum $res | awk '{ printf "%f", $1 + $2 }') index=$((index + 1)) - }

__check_freq_deviation() { res=$(eval echo $$freq_results_array$index) - if [ ! -z "$res" ]; then # compute deviation dev=$(echo $res $avg | awk '{printf "%.3f", (($1 - $2) / $2) * 100}') - # change to absolute dev=$(echo $dev | awk '{ print ($1 >= 0) ? $1 : 0 - $1}') - index=$((index + 1)) res=$(echo $dev | awk '{printf "%f", ($dev > 5.0)}')

@@ -85,23 +77,20 @@ check_freq_deviation() {

cpu=$1 freq=$2 - check "deviation for frequency $(frequnit $freq)" __check_freq_deviation - }

check_deviation() {

cpu=$1 - set_governor $cpu userspace - + index=0 for_each_frequency $cpu compute_freq_ratio - + index=0;sum=0 for_each_frequency $cpu compute_freq_ratio_sum

avg=$(echo $sum $index | awk '{ printf "%.3f", $1 / $2}') - + index=0 for_each_frequency $cpu check_freq_deviation }

-- 2.5.0

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