Re: [PATCH PM-QA v2] cputopology: add arm capacity calculation test

Larry,

Could you also please attach the output of the script on your test platform?

Regards, Amit

On Mon, Mar 9, 2015 at 3:55 AM, Larry Bassel larry.bassel@linaro.org wrote:

Add test which verifies capacity calculation on arm architecture platforms.

Since there isn't yet a similar calculation done for arm64 platforms, this architecture isn't supported by this test (at least as of now).

Signed-off-by: Larry Bassel larry.bassel@linaro.org

cputopology/cputopology_04.sh | 137 +++++++++++++++++++++++++++++++++++++++++ cputopology/cputopology_04.txt | 1 + 2 files changed, 138 insertions(+) create mode 100755 cputopology/cputopology_04.sh create mode 100644 cputopology/cputopology_04.txt

diff --git a/cputopology/cputopology_04.sh b/cputopology/cputopology_04.sh new file mode 100755 index 0000000..26f611c --- /dev/null +++ b/cputopology/cputopology_04.sh @@ -0,0 +1,137 @@ +#!/bin/bash +# +# PM-QA validation test suite for the power management on Linux +# +# Copyright (C) 2015, Linaro Limited. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +# Contributors: +# Larry Bassel larry.bassel@linaro.org +#

+# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Resources/TestSuite/Pm...

+source ../include/functions.sh

+calc_freq() +{

• byte1=$1
• byte2=$2
• byte3=$3
• byte4=$4
• freq=$((byte1*0x1000000+byte2*0x10000+byte3*0x100+byte4))

+}

+set_eff() {

• type=$1
• case $type in

•    arm,cortex-a15) eff=3891 ;;
  

•    arm,cortex-a7)  eff=2048 ;;
  

•    * ) eff=1024 ;;
  

• esac

+}

+calc_mid_capacity() +{

• dt_cpus=$(ls /sys/firmware/devicetree/base/cpus | grep "cpu@[0-9].*")
• min_capacity=$((0xffffffff))
• max_capacity=0
• sched_capacity_shift=10
• for dt_cpu in $dt_cpus; do

•    if [ ! -f /sys/firmware/devicetree/base/cpus/$dt_cpu/clock-frequency ]; then
  

•       log_skip "no clock frequency file present"
  

•       return
  

•    fi
  

•    if [ ! -f /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible ]; then
  

•       log_skip "no compatible file present"
  

•       return
  

•    fi
  

•    filename=/sys/firmware/devicetree/base/cpus/$dt_cpu/clock-frequency
  

•    echo "clock frequency file: $filename"
  

•    bytes=$(od -t u1 -A n $filename)
  

•    calc_freq $bytes
  

•    echo "clock frequency: $freq"
  

•    cpu_type=$(cat /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible)
  

•   echo "cpu type: $cpu_type"
  

•   set_eff $cpu_type
  

•   echo "efficiency: $eff"
  

•   capacity=$((($freq>>20)*$eff))
  

•   echo "capacity: $capacity"
  

•   if [ $capacity -gt $max_capacity ]; then
  

•       max_capacity=$capacity
  

•   fi
  

•   if [ $capacity -lt $min_capacity ]; then
  

•       min_capacity=$capacity
  

•   fi
  

•    if [ $(((4 * $max_capacity))) -lt $(((3 * ($max_capacity + $min_capacity)))) ]; then
  

•            middle_capacity=$((($min_capacity + $max_capacity)>>($sched_capacity_shift+1)))
  

•    else
  

•            middle_capacity=$(((($max_capacity / 3)>>($sched_capacity_shift-1))+1))
  

•    fi
  

•   echo "min capacity: $min_capacity max: $max_capacity middle: $middle_capacity"
  

• done

+}

+cpu_num=0

+verify_cpu_capacity() +{

• for dt_cpu in $dt_cpus; do

•    if [ ! -f /sys/firmware/devicetree/base/cpus/$dt_cpu/clock-frequency ]; then
  

•       log_skip "no clock frequency file present"
  

•       return
  

•    fi
  

•    if [ ! -f /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible ]; then
  

•       log_skip "no compatible file present"
  

•       return
  

•    fi
  

•    filename=/sys/firmware/devicetree/base/cpus/$dt_cpu/clock-frequency
  

•    echo "clock frequency file: $filename"
  

•    bytes=$(od -t u1 -A n $filename)
  

•    calc_freq $bytes
  

•    echo "frequency: $freq"
  

•    cpu_type=$(cat /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible)
  

•   echo "cpu type: $cpu_type"
  

•   set_eff $cpu_type
  

•   echo "efficiency: $eff"
  

•   capacity=$((($freq>>20)*$eff/$middle_capacity))
  

•   expected_capacity_string=$(dmesg | grep "CPU$cpu_num: update cpu_capacity")
  

•   expected_capacity=${expected_capacity_string##*cpu_capacity}
  

•   echo "cpu num: $cpu_num capacity $capacity expected capacity $expected_capacity"
  

•   check "expected capacity for cpu$cpu_num equal to computed capacity" "test $expected_capacity -eq $capacity"
  

•   cpu_num=$((cpu_num+1))
  

• done

+}

+verify_capacity() +{

• if ! [ -d /sys/firmware/devicetree/base/cpus ]; then

•   log_skip "no cpus directory present"
  

•   return
  

• fi
• calc_mid_capacity
• dt_cpus=$(ls -1 /sys/firmware/devicetree/base/cpus | egrep "cpu@.{1,2}$")
• verify_cpu_capacity
• dt_cpus=$(ls -1 /sys/firmware/devicetree/base/cpus | egrep "cpu@.{3,4}$")
• verify_cpu_capacity

+}

+verify_capacity || exit 1 +test_status_show diff --git a/cputopology/cputopology_04.txt b/cputopology/cputopology_04.txt new file mode 100644 index 0000000..36647db --- /dev/null +++ b/cputopology/cputopology_04.txt @@ -0,0 +1 @@

+test capacity calculation

1.8.3.2