From 1e4c2830c36914feb7d03916e21f7c2e45dc2055 Mon Sep 17 00:00:00 2001
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: Fri, 13 Jan 2017 12:06:48 +0530
Subject: selftest: cpufreq: Add special tests

This patch adds support for special tests which were reported on the PM
list over the years, which helped catching core bugs by several
developers.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
 tools/testing/selftests/cpufreq/special-tests.sh | 115 +++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100755 tools/testing/selftests/cpufreq/special-tests.sh

(limited to 'tools/testing/selftests/cpufreq/special-tests.sh')

diff --git a/tools/testing/selftests/cpufreq/special-tests.sh b/tools/testing/selftests/cpufreq/special-tests.sh
new file mode 100755
index 000000000000..58b730f23ef7
--- /dev/null
+++ b/tools/testing/selftests/cpufreq/special-tests.sh
@@ -0,0 +1,115 @@
+#!/bin/bash
+#
+# 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
+}
-- 
cgit v1.2.3-59-g8ed1b