| Current File : //proc/self/root/usr/src/linux-headers-6.8.0-59/tools/testing/selftests/amd-pstate/run.sh |
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# protect against multiple inclusion
if [ $FILE_MAIN ]; then
return 0
else
FILE_MAIN=DONE
fi
SCRIPTDIR=`dirname "$0"`
TRACER=$SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py
source $SCRIPTDIR/basic.sh
source $SCRIPTDIR/tbench.sh
source $SCRIPTDIR/gitsource.sh
# amd-pstate-ut only run on x86/x86_64 AMD systems.
ARCH=$(uname -m 2>/dev/null | sed -e 's/i.86/x86/' -e 's/x86_64/x86/')
VENDOR=$(cat /proc/cpuinfo | grep -m 1 'vendor_id' | awk '{print $NF}')
msg="Skip all tests:"
FUNC=all
OUTFILE=selftest
OUTFILE_TBENCH="$OUTFILE.tbench"
OUTFILE_GIT="$OUTFILE.gitsource"
PERF=/usr/bin/perf
SYSFS=
CPUROOT=
CPUFREQROOT=
MAKE_CPUS=
TIME_LIMIT=100
PROCESS_NUM=128
LOOP_TIMES=3
TRACER_INTERVAL=10
CURRENT_TEST=amd-pstate
COMPARATIVE_TEST=
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
all_scaling_names=("acpi-cpufreq" "amd-pstate")
# Get current cpufreq scaling driver name
scaling_name()
{
if [ "$COMPARATIVE_TEST" = "" ]; then
echo "$CURRENT_TEST"
else
echo "$COMPARATIVE_TEST"
fi
}
# Counts CPUs with cpufreq directories
count_cpus()
{
count=0;
for cpu in `ls $CPUROOT | grep "cpu[0-9].*"`; do
if [ -d $CPUROOT/$cpu/cpufreq ]; then
let count=count+1;
fi
done
echo $count;
}
# $1: policy
find_current_governor()
{
cat $CPUFREQROOT/$1/scaling_governor
}
backup_governor()
{
policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
for policy in $policies; do
cur_gov=$(find_current_governor $policy)
echo "$policy $cur_gov" >> $OUTFILE.backup_governor.log
done
printf "Governor $cur_gov backup done.\n"
}
restore_governor()
{
i=0;
policies=$(awk '{print $1}' $OUTFILE.backup_governor.log)
for policy in $policies; do
let i++;
governor=$(sed -n ''$i'p' $OUTFILE.backup_governor.log | awk '{print $2}')
# switch governor
echo $governor > $CPUFREQROOT/$policy/scaling_governor
done
printf "Governor restored to $governor.\n"
}
# $1: governor
switch_governor()
{
policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
for policy in $policies; do
filepath=$CPUFREQROOT/$policy/scaling_available_governors
# Exit if cpu isn't managed by cpufreq core
if [ ! -f $filepath ]; then
return;
fi
echo $1 > $CPUFREQROOT/$policy/scaling_governor
done
printf "Switched governor to $1.\n"
}
# All amd-pstate tests
amd_pstate_all()
{
printf "\n=============================================\n"
printf "***** Running AMD P-state Sanity Tests *****\n"
printf "=============================================\n\n"
count=$(count_cpus)
if [ $count = 0 ]; then
printf "No cpu is managed by cpufreq core, exiting\n"
exit;
else
printf "AMD P-state manages: $count CPUs\n"
fi
# unit test for amd-pstate kernel driver
amd_pstate_basic
# tbench
amd_pstate_tbench
# gitsource
amd_pstate_gitsource
}
help()
{
printf "Usage: $0 [OPTION...]
[-h <help>]
[-o <output-file-for-dump>]
[-c <all: All testing,
basic: Basic testing,
tbench: Tbench testing,
gitsource: Gitsource testing.>]
[-t <tbench time limit>]
[-p <tbench process number>]
[-l <loop times for tbench>]
[-i <amd tracer interval>]
[-b <perf binary>]
[-m <comparative test: acpi-cpufreq>]
\n"
exit 2
}
parse_arguments()
{
while getopts ho:c:t:p:l:i:b:m: arg
do
case $arg in
h) # --help
help
;;
c) # --func_type (Function to perform: basic, tbench, gitsource (default: all))
FUNC=$OPTARG
;;
o) # --output-file (Output file to store dumps)
OUTFILE=$OPTARG
;;
t) # --tbench-time-limit
TIME_LIMIT=$OPTARG
;;
p) # --tbench-process-number
PROCESS_NUM=$OPTARG
;;
l) # --tbench/gitsource-loop-times
LOOP_TIMES=$OPTARG
;;
i) # --amd-tracer-interval
TRACER_INTERVAL=$OPTARG
;;
b) # --perf-binary
PERF=`realpath $OPTARG`
;;
m) # --comparative-test
COMPARATIVE_TEST=$OPTARG
;;
*)
help
;;
esac
done
}
command_perf()
{
if ! $PERF -v; then
echo $msg please install perf or provide perf binary path as argument >&2
exit $ksft_skip
fi
}
command_tbench()
{
if ! command -v tbench > /dev/null; then
if apt policy dbench > /dev/null 2>&1; then
echo $msg apt install dbench >&2
exit $ksft_skip
elif yum list available | grep dbench > /dev/null 2>&1; then
echo $msg yum install dbench >&2
exit $ksft_skip
fi
fi
if ! command -v tbench > /dev/null; then
echo $msg please install tbench. >&2
exit $ksft_skip
fi
}
prerequisite()
{
if ! echo "$ARCH" | grep -q x86; then
echo "$0 # Skipped: Test can only run on x86 architectures."
exit $ksft_skip
fi
if ! echo "$VENDOR" | grep -iq amd; then
echo "$0 # Skipped: Test can only run on AMD CPU."
echo "$0 # Current cpu vendor is $VENDOR."
exit $ksft_skip
fi
scaling_driver=$(cat /sys/devices/system/cpu/cpufreq/policy0/scaling_driver)
if [ "$COMPARATIVE_TEST" = "" ]; then
if [ "$scaling_driver" != "$CURRENT_TEST" ]; then
echo "$0 # Skipped: Test can only run on $CURRENT_TEST driver or run comparative test."
echo "$0 # Please set X86_AMD_PSTATE enabled or run comparative test."
echo "$0 # Current cpufreq scaling driver is $scaling_driver."
exit $ksft_skip
fi
else
case "$FUNC" in
"tbench" | "gitsource")
if [ "$scaling_driver" != "$COMPARATIVE_TEST" ]; then
echo "$0 # Skipped: Comparison test can only run on $COMPARISON_TEST driver."
echo "$0 # Current cpufreq scaling driver is $scaling_driver."
exit $ksft_skip
fi
;;
*)
echo "$0 # Skipped: Comparison test are only for tbench or gitsource."
echo "$0 # Current comparative test is for $FUNC."
exit $ksft_skip
;;
esac
fi
if [ ! -w /dev ]; then
echo $msg please run this as root >&2
exit $ksft_skip
fi
case "$FUNC" in
"all")
command_perf
command_tbench
;;
"tbench")
command_perf
command_tbench
;;
"gitsource")
command_perf
;;
esac
SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
if [ ! -d "$SYSFS" ]; then
echo $msg sysfs is not mounted >&2
exit 2
fi
CPUROOT=$SYSFS/devices/system/cpu
CPUFREQROOT="$CPUROOT/cpufreq"
if ! ls $CPUROOT/cpu* > /dev/null 2>&1; then
echo $msg cpus not available in sysfs >&2
exit 2
fi
if ! ls $CPUROOT/cpufreq > /dev/null 2>&1; then
echo $msg cpufreq directory not available in sysfs >&2
exit 2
fi
}
do_test()
{
# Check if CPUs are managed by cpufreq or not
count=$(count_cpus)
MAKE_CPUS=$((count*2))
if [ $count = 0 ]; then
echo "No cpu is managed by cpufreq core, exiting"
exit 2;
fi
case "$FUNC" in
"all")
amd_pstate_all
;;
"basic")
amd_pstate_basic
;;
"tbench")
amd_pstate_tbench
;;
"gitsource")
amd_pstate_gitsource
;;
*)
echo "Invalid [-f] function type"
help
;;
esac
}
# clear dumps
pre_clear_dumps()
{
case "$FUNC" in
"all")
rm -rf $OUTFILE.log
rm -rf $OUTFILE.backup_governor.log
rm -rf *.png
;;
"tbench")
rm -rf $OUTFILE.log
rm -rf $OUTFILE.backup_governor.log
rm -rf tbench_*.png
;;
"gitsource")
rm -rf $OUTFILE.log
rm -rf $OUTFILE.backup_governor.log
rm -rf gitsource_*.png
;;
*)
;;
esac
}
post_clear_dumps()
{
rm -rf $OUTFILE.log
rm -rf $OUTFILE.backup_governor.log
}
# Parse arguments
parse_arguments $@
# Make sure all requirements are met
prerequisite
# Run requested functions
pre_clear_dumps
do_test | tee -a $OUTFILE.log
post_clear_dumps