selftest: cpufreq: Add support for cpufreq tests
This patch adds supports for basic cpufreq tests, which can be performed
independent of any platform.
It does basic tests for now, like
- reading all cpufreq files
- trying to update them
- switching frequencies
- switching governors
This can be extended to have more specific tests later on.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh
new file mode 100755
index 0000000..3224652
--- /dev/null
+++ b/tools/testing/selftests/cpufreq/main.sh
@@ -0,0 +1,128 @@
+#!/bin/bash
+
+source cpu.sh
+source cpufreq.sh
+source governor.sh
+
+FUNC=basic # do basic tests by default
+OUTFILE=cpufreq_selftest
+SYSFS=
+CPUROOT=
+CPUFREQROOT=
+
+helpme()
+{
+ printf "Usage: $0 [-h] [-to args]
+ [-h <help>]
+ [-o <output-file-for-dump>]
+ [-t <basic: Basic cpufreq testing>]
+ \n"
+ exit 2
+}
+
+prerequisite()
+{
+ msg="skip all tests:"
+
+ if [ $UID != 0 ]; then
+ echo $msg must be run as root >&2
+ exit 2
+ fi
+
+ taskset -p 01 $$
+
+ 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
+}
+
+parse_arguments()
+{
+ while getopts ht:o: arg
+ do
+ case $arg in
+ h) # --help
+ helpme
+ ;;
+
+ t) # --func_type (Function to perform: basic (default: basic))
+ FUNC=$OPTARG
+ ;;
+
+ o) # --output-file (Output file to store dumps)
+ OUTFILE=$OPTARG
+ ;;
+
+ \?)
+ helpme
+ ;;
+ esac
+ done
+}
+
+do_test()
+{
+ # Check if CPUs are managed by cpufreq or not
+ count=$(count_cpufreq_managed_cpus)
+
+ if [ $count = 0 ]; then
+ echo "No cpu is managed by cpufreq core, exiting"
+ exit 2;
+ fi
+
+ case "$FUNC" in
+ "basic")
+ cpufreq_basic_tests
+ ;;
+
+ *)
+ echo "Invalid [-f] function type"
+ helpme
+ ;;
+ esac
+}
+
+# clear dumps
+# $1: file name
+clear_dumps()
+{
+ echo "" > $1.txt
+ echo "" > $1.dmesg_cpufreq.txt
+ echo "" > $1.dmesg_full.txt
+}
+
+# $1: output file name
+dmesg_dumps()
+{
+ dmesg | grep cpufreq >> $1.dmesg_cpufreq.txt
+
+ # We may need the full logs as well
+ dmesg >> $1.dmesg_full.txt
+}
+
+# Parse arguments
+parse_arguments $@
+
+# Make sure all requirements are met
+prerequisite
+
+# Run requested functions
+clear_dumps $OUTFILE
+do_test >> $OUTFILE.txt
+dmesg_dumps $OUTFILE