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 --- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/cpufreq/Makefile | 8 ++ tools/testing/selftests/cpufreq/cpu.sh | 84 ++++++++++++ tools/testing/selftests/cpufreq/cpufreq.sh | 201 ++++++++++++++++++++++++++++ tools/testing/selftests/cpufreq/governor.sh | 146 ++++++++++++++++++++ tools/testing/selftests/cpufreq/main.sh | 128 ++++++++++++++++++ 6 files changed, 568 insertions(+) create mode 100644 tools/testing/selftests/cpufreq/Makefile create mode 100755 tools/testing/selftests/cpufreq/cpu.sh create mode 100755 tools/testing/selftests/cpufreq/cpufreq.sh create mode 100755 tools/testing/selftests/cpufreq/governor.sh create mode 100755 tools/testing/selftests/cpufreq/main.sh

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 71b05891a6a1..a5a70e06b012 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -1,6 +1,7 @@ TARGETS = bpf TARGETS += breakpoints TARGETS += capabilities +TARGETS += cpufreq TARGETS += cpu-hotplug TARGETS += efivarfs TARGETS += exec diff --git a/tools/testing/selftests/cpufreq/Makefile b/tools/testing/selftests/cpufreq/Makefile new file mode 100644 index 000000000000..f5c6bb1965a1 --- /dev/null +++ b/tools/testing/selftests/cpufreq/Makefile @@ -0,0 +1,8 @@ +all: + +TEST_PROGS := main.sh +TEST_FILES := cpu.sh cpufreq.sh governor.sh + +include ../lib.mk + +clean: diff --git a/tools/testing/selftests/cpufreq/cpu.sh b/tools/testing/selftests/cpufreq/cpu.sh new file mode 100755 index 000000000000..8e08a83d65f2 --- /dev/null +++ b/tools/testing/selftests/cpufreq/cpu.sh @@ -0,0 +1,84 @@ +#!/bin/bash +# +# CPU helpers + +# protect against multiple inclusion +if [ $FILE_CPU ]; then + return 0 +else + FILE_CPU=DONE +fi + +source cpufreq.sh + +for_each_cpu() +{ + cpus=$(ls $CPUROOT | grep "cpu[0-9].*") + for cpu in $cpus; do + $@ $cpu + done +} + +for_each_non_boot_cpu() +{ + cpus=$(ls $CPUROOT | grep "cpu[1-9].*") + for cpu in $cpus; do + $@ $cpu + done +} + +#$1: cpu +offline_cpu() +{ + printf "Offline $1\n" + echo 0 > $CPUROOT/$1/online +} + +#$1: cpu +online_cpu() +{ + printf "Online $1\n" + echo 1 > $CPUROOT/$1/online +} + +#$1: cpu +reboot_cpu() +{ + offline_cpu $1 + online_cpu $1 +} + +# Reboot CPUs +# param: number of times we want to run the loop +reboot_cpus() +{ + printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" + + for i in `seq 1 $1`; do + for_each_non_boot_cpu offline_cpu + for_each_non_boot_cpu online_cpu + printf "\n" + done + + printf "\n%s\n\n" "------------------------------------------------" +} + +# Prints warning for all CPUs with missing cpufreq directory +print_unmanaged_cpus() +{ + for_each_cpu cpu_should_have_cpufreq_directory +} + +# Counts CPUs with cpufreq directories +count_cpufreq_managed_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; +} diff --git a/tools/testing/selftests/cpufreq/cpufreq.sh b/tools/testing/selftests/cpufreq/cpufreq.sh new file mode 100755 index 000000000000..2b8b05aaa874 --- /dev/null +++ b/tools/testing/selftests/cpufreq/cpufreq.sh @@ -0,0 +1,201 @@ +#!/bin/bash + +# protect against multiple inclusion +if [ $FILE_CPUFREQ ]; then + return 0 +else + FILE_CPUFREQ=DONE +fi + +source cpu.sh + + +# $1: cpu +cpu_should_have_cpufreq_directory() +{ + if [ ! -d $CPUROOT/$1/cpufreq ]; then + printf "Warning: No cpufreq directory present for $1\n" + fi +} + +cpu_should_not_have_cpufreq_directory() +{ + if [ -d $CPUROOT/$1/cpufreq ]; then + printf "Warning: cpufreq directory present for $1\n" + fi +} + +for_each_policy() +{ + policies=$(ls $CPUFREQROOT| grep "policy[0-9].*") + for policy in $policies; do + $@ $policy + done +} + +for_each_policy_concurrent() +{ + policies=$(ls $CPUFREQROOT| grep "policy[0-9].*") + for policy in $policies; do + $@ $policy & + done +} + +# $1: Path +read_cpufreq_files_in_dir() +{ + local files=`ls $1` + + printf "Printing directory: $1\n\n" + + for file in $files; do + if [ -f $1/$file ]; then + printf "$file:" + cat $1/$file + else + printf "\n" + read_cpufreq_files_in_dir "$1/$file" + fi + done + printf "\n" +} + + +read_all_cpufreq_files() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + read_cpufreq_files_in_dir $CPUFREQROOT + + printf "%s\n\n" "------------------------------------------------" +} + + +# UPDATE CPUFREQ FILES + +# $1: directory path +update_cpufreq_files_in_dir() +{ + local files=`ls $1` + + printf "Updating directory: $1\n\n" + + for file in $files; do + if [ -f $1/$file ]; then + # file is writable ? + local wfile=$(ls -l $1/$file | awk '$1 ~ /^.*w.*/ { print $NF; }') + + if [ ! -z $wfile ]; then + # scaling_setspeed is a special file and we + # should skip updating it + if [ $file != "scaling_setspeed" ]; then + local val=$(cat $1/$file) + printf "Writing $val to: $file\n" + echo $val > $1/$file + fi + fi + else + printf "\n" + update_cpufreq_files_in_dir "$1/$file" + fi + done + + printf "\n" +} + +# Update all writable files with their existing values +update_all_cpufreq_files() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + update_cpufreq_files_in_dir $CPUFREQROOT + + printf "%s\n\n" "------------------------------------------------" +} + + +# CHANGE CPU FREQUENCIES + +# $1: policy +find_current_freq() +{ + cat $CPUFREQROOT/$1/scaling_cur_freq +} + +# $1: policy +# $2: frequency +set_cpu_frequency() +{ + printf "Change frequency for $1 to $2\n" + echo $2 > $CPUFREQROOT/$1/scaling_setspeed +} + +# $1: policy +test_all_frequencies() +{ + local filepath="$CPUFREQROOT/$1" + + backup_governor $1 + + local found=$(switch_governor $1 "userspace") + if [ $found = 1 ]; then + printf "${FUNCNAME[0]}: userspace governor not available for: $1\n" + return; + fi + + printf "Switched governor for $1 to userspace\n\n" + + local freqs=$(cat $filepath/scaling_available_frequencies) + printf "Available frequencies for $1: $freqs\n\n" + + # Set all frequencies one-by-one + for freq in $freqs; do + set_cpu_frequency $1 $freq + done + + printf "\n" + + restore_governor $1 +} + +# $1: loop count +shuffle_frequency_for_all_cpus() +{ + printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" + + for i in `seq 1 $1`; do + for_each_policy test_all_frequencies + done + printf "\n%s\n\n" "------------------------------------------------" +} + +# Basic cpufreq tests +cpufreq_basic_tests() +{ + printf "*** RUNNING CPUFREQ SANITY TESTS ***\n" + printf "====================================\n\n" + + count=$(count_cpufreq_managed_cpus) + if [ $count = 0 ]; then + printf "No cpu is managed by cpufreq core, exiting\n" + exit; + else + printf "CPUFreq manages: $count CPUs\n\n" + fi + + # Detect & print which CPUs are not managed by cpufreq + print_unmanaged_cpus + + # read/update all cpufreq files + read_all_cpufreq_files + update_all_cpufreq_files + + # hotplug cpus + reboot_cpus 5 + + # Test all frequencies + shuffle_frequency_for_all_cpus 2 + + # Test all governors + shuffle_governors_for_all_cpus 1 +} diff --git a/tools/testing/selftests/cpufreq/governor.sh b/tools/testing/selftests/cpufreq/governor.sh new file mode 100755 index 000000000000..2e42432892ab --- /dev/null +++ b/tools/testing/selftests/cpufreq/governor.sh @@ -0,0 +1,146 @@ +#!/bin/bash +# +# Test governors + +# protect against multiple inclusion +if [ $FILE_GOVERNOR ]; then + return 0 +else + FILE_GOVERNOR=DONE +fi + +source cpu.sh +source cpufreq.sh + +CUR_GOV= +CUR_FREQ= + +# Find governor's directory path +# $1: policy, $2: governor +find_gov_directory() +{ + if [ -d $CPUFREQROOT/$2 ]; then + printf "$CPUFREQROOT/$2\n" + elif [ -d $CPUFREQROOT/$1/$2 ]; then + printf "$CPUFREQROOT/$1/$2\n" + else + printf "INVALID\n" + fi +} + +# $1: policy +find_current_governor() +{ + cat $CPUFREQROOT/$1/scaling_governor +} + +# $1: policy +backup_governor() +{ + CUR_GOV=$(find_current_governor $1) + + printf "Governor backup done for $1: $CUR_GOV\n" + + if [ $CUR_GOV == "userspace" ]; then + CUR_FREQ=$(find_current_freq $1) + printf "Governor frequency backup done for $1: $CUR_FREQ\n" + fi + + printf "\n" +} + +# $1: policy +restore_governor() +{ + __switch_governor $1 $CUR_GOV + + printf "Governor restored for $1 to $CUR_GOV\n" + + if [ $CUR_GOV == "userspace" ]; then + set_cpu_frequency $1 $CUR_FREQ + printf "Governor frequency restored for $1: $CUR_FREQ\n" + fi + + printf "\n" +} + +# param: +# $1: policy, $2: governor +__switch_governor() +{ + echo $2 > $CPUFREQROOT/$1/scaling_governor +} + +# SWITCH GOVERNORS + +# $1: cpu, $2: governor +switch_governor() +{ + local filepath=$CPUFREQROOT/$1/scaling_available_governors + + # check if governor is available + local found=$(cat $filepath | grep $2 | wc -l) + if [ $found = 0 ]; then + echo 1; + return + fi + + __switch_governor $1 $2 + echo 0; +} + +# $1: policy, $2: governor +switch_show_governor() +{ + cur_gov=find_current_governor + if [ $cur_gov == "userspace" ]; then + cur_freq=find_current_freq + fi + + # switch governor + __switch_governor $1 $2 + + printf "\nSwitched governor for $1 to $2\n\n" + + if [ $2 == "userspace" -o $2 == "powersave" -o $2 == "performance" ]; then + printf "No files to read for $2 governor\n\n" + return + fi + + # show governor files + local govpath=$(find_gov_directory $1 $2) + read_cpufreq_files_in_dir $govpath +} + +# $1: function to be called, $2: policy +call_for_each_governor() +{ + local filepath=$CPUFREQROOT/$2/scaling_available_governors + + # Exit if cpu isn't managed by cpufreq core + if [ ! -f $filepath ]; then + return; + fi + + backup_governor $2 + + local governors=$(cat $filepath) + printf "Available governors for $2: $governors\n" + + for governor in $governors; do + $1 $2 $governor + done + + restore_governor $2 +} + +# $1: loop count +shuffle_governors_for_all_cpus() +{ + printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" + + for i in `seq 1 $1`; do + for_each_policy call_for_each_governor switch_show_governor + done + printf "%s\n\n" "------------------------------------------------" +} diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh new file mode 100755 index 000000000000..3224652ccbd4 --- /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

This patch adds support for cpufreq modules like cpufreq drivers and cpufreq governors. The tests will insert the modules in different orders and them perform basic cpufreq tests. The modules are then removed from the kernel.

Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- tools/testing/selftests/cpufreq/Makefile | 2 +- tools/testing/selftests/cpufreq/main.sh | 45 +++++- tools/testing/selftests/cpufreq/module.sh | 243 ++++++++++++++++++++++++++++++ 3 files changed, 284 insertions(+), 6 deletions(-) create mode 100755 tools/testing/selftests/cpufreq/module.sh

diff --git a/tools/testing/selftests/cpufreq/Makefile b/tools/testing/selftests/cpufreq/Makefile index f5c6bb1965a1..80c8727dcec1 100644 --- a/tools/testing/selftests/cpufreq/Makefile +++ b/tools/testing/selftests/cpufreq/Makefile @@ -1,7 +1,7 @@ all:

TEST_PROGS := main.sh -TEST_FILES := cpu.sh cpufreq.sh governor.sh +TEST_FILES := cpu.sh cpufreq.sh governor.sh module.sh

include ../lib.mk

diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh index 9ff662f67ea4..2515867ac9de 100755 --- a/tools/testing/selftests/cpufreq/main.sh +++ b/tools/testing/selftests/cpufreq/main.sh @@ -3,6 +3,7 @@ source cpu.sh source cpufreq.sh source governor.sh +source module.sh

FUNC=basic # do basic tests by default OUTFILE=cpufreq_selftest @@ -12,12 +13,15 @@ CPUFREQROOT=

helpme() { - printf "Usage: $0 [-h] [-to args] + printf "Usage: $0 [-h] [-todg args] [-h <help>] [-o <output-file-for-dump>] [-t <basic: Basic cpufreq testing suspend: suspend/resume, - hibernate: hibernate/resume>] + hibernate: hibernate/resume, + modtest: test driver or governor modules. Only to be used with -d or -g options>] + [-d <driver's module name: only with "-t modtest>"] + [-g <governor's module name: only with "-t modtest>"] \n" exit 2 } @@ -56,14 +60,14 @@ prerequisite()

parse_arguments() { - while getopts ht:o: arg + while getopts ht:o:d:g: arg do case $arg in h) # --help helpme ;;

- t) # --func_type (Function to perform: basic, suspend, hibernate (default: basic)) + t) # --func_type (Function to perform: basic, suspend, hibernate, modtest (default: basic)) FUNC=$OPTARG ;;

@@ -71,6 +75,14 @@ parse_arguments() OUTFILE=$OPTARG ;;

+ d) # --driver-mod-name (Name of the driver module) + DRIVER_MOD=$OPTARG + ;; + + g) # --governor-mod-name (Name of the governor module) + GOVERNOR_MOD=$OPTARG + ;; + ?) helpme ;; @@ -83,7 +95,7 @@ do_test() # Check if CPUs are managed by cpufreq or not count=$(count_cpufreq_managed_cpus)

- if [ $count = 0 ]; then + if [ $count = 0 -a $FUNC != "modtest" ]; then echo "No cpu is managed by cpufreq core, exiting" exit 2; fi @@ -101,6 +113,29 @@ do_test() do_suspend "hibernate" 1 ;;

+ "modtest") + # Do we have modules in place? + if [ -z $DRIVER_MOD ] && [ -z $GOVERNOR_MOD ]; then + echo "No driver or governor module passed with -d or -g" + exit 2; + fi + + if [ $DRIVER_MOD ]; then + if [ $GOVERNOR_MOD ]; then + module_test $DRIVER_MOD $GOVERNOR_MOD + else + module_driver_test $DRIVER_MOD + fi + else + if [ $count = 0 ]; then + echo "No cpu is managed by cpufreq core, exiting" + exit 2; + fi + + module_governor_test $GOVERNOR_MOD + fi + ;; + *) echo "Invalid [-f] function type" helpme diff --git a/tools/testing/selftests/cpufreq/module.sh b/tools/testing/selftests/cpufreq/module.sh new file mode 100755 index 000000000000..8ff2244a33a1 --- /dev/null +++ b/tools/testing/selftests/cpufreq/module.sh @@ -0,0 +1,243 @@ +#!/bin/bash +# +# Modules specific tests cases + +# protect against multiple inclusion +if [ $FILE_MODULE ]; then + return 0 +else + FILE_MODULE=DONE +fi + +source cpu.sh +source cpufreq.sh +source governor.sh + +# Check basic insmod/rmmod +# $1: module +test_basic_insmod_rmmod() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + printf "Inserting $1 module\n" + # insert module + insmod $1 + if [ $? != 0 ]; then + printf "Insmod $1 failed\n" + exit; + fi + + printf "Removing $1 module\n" + # remove module + rmmod $1 + if [ $? != 0 ]; then + printf "rmmod $1 failed\n" + exit; + fi + + printf "\n" +} + +# Insert cpufreq driver module and perform basic tests +# $1: cpufreq-driver module to insert +# $2: If we want to play with CPUs (1) or not (0) +module_driver_test_single() +{ + printf "** Test: Running ${FUNCNAME[0]} for driver $1 and cpus_hotplug=$2 **\n\n" + + if [ $2 -eq 1 ]; then + # offline all non-boot CPUs + for_each_non_boot_cpu offline_cpu + printf "\n" + fi + + # insert module + printf "Inserting $1 module\n\n" + insmod $1 + if [ $? != 0 ]; then + printf "Insmod $1 failed\n" + return; + fi + + if [ $2 -eq 1 ]; then + # online all non-boot CPUs + for_each_non_boot_cpu online_cpu + printf "\n" + fi + + # run basic tests + cpufreq_basic_tests + + # remove module + printf "Removing $1 module\n\n" + rmmod $1 + if [ $? != 0 ]; then + printf "rmmod $1 failed\n" + return; + fi + + # There shouldn't be any cpufreq directories now. + for_each_cpu cpu_should_not_have_cpufreq_directory + printf "\n" +} + +# $1: cpufreq-driver module to insert +module_driver_test() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + # check if module is present or not + ls $1 > /dev/null + if [ $? != 0 ]; then + printf "$1: not present in `pwd` folder\n" + return; + fi + + # test basic module tests + test_basic_insmod_rmmod $1 + + # Do simple module test + module_driver_test_single $1 0 + + # Remove CPUs before inserting module and then bring them back + module_driver_test_single $1 1 + printf "\n" +} + +# find governor name based on governor module name +# $1: governor module name +find_gov_name() +{ + if [ $1 = "cpufreq_ondemand.ko" ]; then + printf "ondemand" + elif [ $1 = "cpufreq_conservative.ko" ]; then + printf "conservative" + elif [ $1 = "cpufreq_userspace.ko" ]; then + printf "userspace" + elif [ $1 = "cpufreq_performance.ko" ]; then + printf "performance" + elif [ $1 = "cpufreq_powersave.ko" ]; then + printf "powersave" + elif [ $1 = "cpufreq_schedutil.ko" ]; then + printf "schedutil" + fi +} + +# $1: governor string, $2: governor module, $3: policy +# example: module_governor_test_single "ondemand" "cpufreq_ondemand.ko" 2 +module_governor_test_single() +{ + printf "** Test: Running ${FUNCNAME[0]} for $3 **\n\n" + + backup_governor $3 + + # switch to new governor + printf "Switch from $CUR_GOV to $1\n" + switch_show_governor $3 $1 + + # try removing module, it should fail as governor is used + printf "Removing $2 module\n\n" + rmmod $2 + if [ $? = 0 ]; then + printf "WARN: rmmod $2 succeeded even if governor is used\n" + insmod $2 + else + printf "Pass: unable to remove $2 while it is being used\n\n" + fi + + # switch back to old governor + printf "Switchback to $CUR_GOV from $1\n" + restore_governor $3 + printf "\n" +} + +# Insert cpufreq governor module and perform basic tests +# $1: cpufreq-governor module to insert +module_governor_test() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + # check if module is present or not + ls $1 > /dev/null + if [ $? != 0 ]; then + printf "$1: not present in `pwd` folder\n" + return; + fi + + # test basic module tests + test_basic_insmod_rmmod $1 + + # insert module + printf "Inserting $1 module\n\n" + insmod $1 + if [ $? != 0 ]; then + printf "Insmod $1 failed\n" + return; + fi + + # switch to new governor for each cpu + for_each_policy module_governor_test_single $(find_gov_name $1) $1 + + # remove module + printf "Removing $1 module\n\n" + rmmod $1 + if [ $? != 0 ]; then + printf "rmmod $1 failed\n" + return; + fi + printf "\n" +} + +# test modules: driver and governor +# $1: driver module, $2: governor module +module_test() +{ + printf "** Test: Running ${FUNCNAME[0]} **\n\n" + + # check if modules are present or not + ls $1 $2 > /dev/null + if [ $? != 0 ]; then + printf "$1 or $2: is not present in `pwd` folder\n" + return; + fi + + # TEST1: Insert gov after driver + # insert driver module + printf "Inserting $1 module\n\n" + insmod $1 + if [ $? != 0 ]; then + printf "Insmod $1 failed\n" + return; + fi + + # run governor tests + module_governor_test $2 + + # remove driver module + printf "Removing $1 module\n\n" + rmmod $1 + if [ $? != 0 ]; then + printf "rmmod $1 failed\n" + return; + fi + + # TEST2: Insert driver after governor + # insert governor module + printf "Inserting $2 module\n\n" + insmod $2 + if [ $? != 0 ]; then + printf "Insmod $2 failed\n" + return; + fi + + # run governor tests + module_driver_test $1 + + # remove driver module + printf "Removing $2 module\n\n" + rmmod $2 + if [ $? != 0 ]; then + printf "rmmod $2 failed\n" + return; + fi +}