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-rwxr-xr-xtools/testing/selftests/cpufreq/special-tests.sh116
1 files changed, 116 insertions, 0 deletions
diff --git a/tools/testing/selftests/cpufreq/special-tests.sh b/tools/testing/selftests/cpufreq/special-tests.sh
new file mode 100755
index 000000000..8d40505dc
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+++ b/tools/testing/selftests/cpufreq/special-tests.sh
@@ -0,0 +1,116 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Special test cases reported by people
+
+# Testcase 1: Reported here: http://marc.info/?l=linux-pm&m=140618592709858&w=2
+
+# protect against multiple inclusion
+if [ $FILE_SPECIAL ]; then
+ return 0
+else
+ FILE_SPECIAL=DONE
+fi
+
+source cpu.sh
+source cpufreq.sh
+source governor.sh
+
+# Test 1
+# $1: policy
+__simple_lockdep()
+{
+ # switch to ondemand
+ __switch_governor $1 "ondemand"
+
+ # cat ondemand files
+ local ondir=$(find_gov_directory $1 "ondemand")
+ if [ -z $ondir ]; then
+ printf "${FUNCNAME[0]}Ondemand directory not created, quit"
+ return
+ fi
+
+ cat $ondir/*
+
+ # switch to conservative
+ __switch_governor $1 "conservative"
+}
+
+simple_lockdep()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ for_each_policy __simple_lockdep
+}
+
+# Test 2
+# $1: policy
+__concurrent_lockdep()
+{
+ for i in `seq 0 100`; do
+ __simple_lockdep $1
+ done
+}
+
+concurrent_lockdep()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ for_each_policy_concurrent __concurrent_lockdep
+}
+
+# Test 3
+quick_shuffle()
+{
+ # this is called concurrently from governor_race
+ for I in `seq 1000`
+ do
+ echo ondemand | sudo tee $CPUFREQROOT/policy*/scaling_governor &
+ echo userspace | sudo tee $CPUFREQROOT/policy*/scaling_governor &
+ done
+}
+
+governor_race()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ # run 8 concurrent instances
+ for I in `seq 8`
+ do
+ quick_shuffle &
+ done
+}
+
+# Test 4
+# $1: cpu
+hotplug_with_updates_cpu()
+{
+ local filepath="$CPUROOT/$1/cpufreq"
+
+ # switch to ondemand
+ __switch_governor_for_cpu $1 "ondemand"
+
+ for i in `seq 1 5000`
+ do
+ reboot_cpu $1
+ done &
+
+ local freqs=$(cat $filepath/scaling_available_frequencies)
+ local oldfreq=$(cat $filepath/scaling_min_freq)
+
+ for j in `seq 1 5000`
+ do
+ # Set all frequencies one-by-one
+ for freq in $freqs; do
+ echo $freq > $filepath/scaling_min_freq
+ done
+ done
+
+ # restore old freq
+ echo $oldfreq > $filepath/scaling_min_freq
+}
+
+hotplug_with_updates()
+{
+ for_each_non_boot_cpu hotplug_with_updates_cpu
+}