selftest: cpufreq: Add suspend/resume/hibernate support

This patch adds support to test basic suspend/resume and hibernation to
the cpufreq selftests.

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/cpufreq.sh b/tools/testing/selftests/cpufreq/cpufreq.sh
index 2b8b05a..1ed3832 100755 (executable)
--- a/tools/testing/selftests/cpufreq/cpufreq.sh
+++ b/tools/testing/selftests/cpufreq/cpufreq.sh
@@ -199,3 +199,43 @@ cpufreq_basic_tests()
        # Test all governors
        shuffle_governors_for_all_cpus 1
 }
+
+# Suspend/resume
+# $1: "suspend" or "hibernate", $2: loop count
+do_suspend()
+{
+       printf "** Test: Running ${FUNCNAME[0]}: Trying $1 for $2 loops **\n\n"
+
+       # Is the directory available
+       if [ ! -d $SYSFS/power/ -o ! -f $SYSFS/power/state ]; then
+               printf "$SYSFS/power/state not available\n"
+               return 1
+       fi
+
+       if [ $1 = "suspend" ]; then
+               filename="mem"
+       elif [ $1 = "hibernate" ]; then
+               filename="disk"
+       else
+               printf "$1 is not a valid option\n"
+               return 1
+       fi
+
+       if [ -n $filename ]; then
+               present=$(cat $SYSFS/power/state | grep $filename)
+
+               if [ -z "$present" ]; then
+                       printf "Tried to $1 but $filename isn't present in $SYSFS/power/state\n"
+                       return 1;
+               fi
+
+               for i in `seq 1 $2`; do
+                       printf "Starting $1\n"
+                       echo $filename > $SYSFS/power/state
+                       printf "Came out of $1\n"
+
+                       printf "Do basic tests after finishing $1 to verify cpufreq state\n\n"
+                       cpufreq_basic_tests
+               done
+       fi
+}

diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh
index 3224652..9ff662f 100755 (executable)
--- a/tools/testing/selftests/cpufreq/main.sh
+++ b/tools/testing/selftests/cpufreq/main.sh
@@ -15,7 +15,9 @@ helpme()
        printf "Usage: $0 [-h] [-to args]
        [-h <help>]
        [-o <output-file-for-dump>]
-       [-t <basic: Basic cpufreq testing>]
+       [-t <basic: Basic cpufreq testing
+            suspend: suspend/resume,
+            hibernate: hibernate/resume>]
        \n"
        exit 2
 }
@@ -61,7 +63,7 @@ parse_arguments()
                                helpme
                                ;;
 
-                       t) # --func_type (Function to perform: basic (default: basic))
+                       t) # --func_type (Function to perform: basic, suspend, hibernate (default: basic))
                                FUNC=$OPTARG
                                ;;
 
@@ -91,6 +93,14 @@ do_test()
                cpufreq_basic_tests
                ;;
 
+               "suspend")
+               do_suspend "suspend" 1
+               ;;
+
+               "hibernate")
+               do_suspend "hibernate" 1
+               ;;
+
                *)
                echo "Invalid [-f] function type"
                helpme