On 21 April 2015 at 21:25, Larry Bassel <larry.bas...@linaro.org> wrote: > Add test which verifies capacity calculation on arm > architecture platforms. > > This will work on any platform that uses parse_dt_topology() arch hook > to set cpu capacity. Currently only arm (not arm64) platforms do this. > > Signed-off-by: Larry Bassel <larry.bas...@linaro.org> > --- > cputopology/cputopology_04.sh | 131 > +++++++++++++++++++++++++++++++++++++++++ > cputopology/cputopology_04.txt | 5 ++ > 2 files changed, 136 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..cce46cd > --- /dev/null > +++ b/cputopology/cputopology_04.sh > @@ -0,0 +1,131 @@ > +#!/bin/sh > +# > +# 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.bas...@linaro.org> > +# > + > +# URL : > https://wiki.linaro.org/WorkingGroups/PowerManagement/Resources/TestSuite/PmQaSpecification#cputopology_04 > + > +. ../include/functions.sh > + > +calc_freq() > +{ > + byte1=$1 > + byte2=$2 > + byte3=$3 > + byte4=$4 > + freq=$((byte1*0x1000000+byte2*0x10000+byte3*0x100+byte4)) > +} > + > +# eff is the relative cpu efficiency of each processor > +set_eff() { > + type=$1 > + > + case $type in > + arm,cortex-a15) eff=3891 ;; > + arm,cortex-a7) eff=2048 ;; > + * ) eff=1024 ;; > + esac > +} > + > +# Calculate a middle efficiency, This is later used to scale > +# the cpu_capacity such that an 'average' CPU is of middle capacity. > + > +calc_mid_capacity() > +{ > + dt_cpus=$(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 > + bytes=$(od -t u1 -A n $filename) > + calc_freq $bytes > + cpu_type=$(cat /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible) > + set_eff $cpu_type > + capacity=$((($freq>>20)*$eff)) > + 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 > + 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 > + bytes=$(od -t u1 -A n $filename) > + calc_freq $bytes > + cpu_type=$(cat /sys/firmware/devicetree/base/cpus/$dt_cpu/compatible) > + set_eff $cpu_type > + capacity=$((($freq>>20)*$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..2995aab > --- /dev/null > +++ b/cputopology/cputopology_04.txt > @@ -0,0 +1,5 @@ > +Test capacity calculation (this is based on > +the algorithm in arch/arm/kernel/topology.c), > +make sure that the information in > +/sys/firmware/devicetree/base/cpus corresponds > +to that reported by the kernel log.
Hi Larry, FWIW, you can add my Acked-by on this patch Regards, Vincent > -- > 1.8.3.2 > _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-dev
