[PATCH v2] selftests/amd-pstate: Fix broken paths to run workloads in amd-pstate-ut

[Swapnil Sapkal <swapnil.sapkal@amd.com>]

In selftests/amd-pstate, tbench and gitsource microbenchmarks are used to
compare the performance with different governors. In Current
implementation relative path to run `amd_pstate_tracer.py`
broken. Fixed this by using absolute paths.
Also selftests/amd-pstate uses distro `perf` to capture stats while running
these microbenchmarks. Distro `perf` is not working with upstream
kernel. Fixed this by providing an option to give the perf binary path.

Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com>
---
 .../x86/amd_pstate_tracer/amd_pstate_trace.py |  2 +-
 .../testing/selftests/amd-pstate/gitsource.sh | 14 +++++++-----
 tools/testing/selftests/amd-pstate/run.sh     | 22 +++++++++++++------
 tools/testing/selftests/amd-pstate/tbench.sh  |  4 ++--
 4 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py b/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
index 904df0ea0a1e..2448bb07973f 100755
--- a/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
+++ b/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
@@ -30,7 +30,7 @@ import getopt
 import Gnuplot
 from numpy import *
 from decimal import *
-sys.path.append('../intel_pstate_tracer')
+sys.path.append(os.path.join(os.path.dirname(__file__), '../intel_pstate_tracer'))
 #import intel_pstate_tracer
 import intel_pstate_tracer as ipt
 
diff --git a/tools/testing/selftests/amd-pstate/gitsource.sh b/tools/testing/selftests/amd-pstate/gitsource.sh
index 5f2171f0116d..c327444d3506 100755
--- a/tools/testing/selftests/amd-pstate/gitsource.sh
+++ b/tools/testing/selftests/amd-pstate/gitsource.sh
@@ -66,12 +66,15 @@ post_clear_gitsource()
 
 install_gitsource()
 {
-	if [ ! -d $git_name ]; then
+	if [ ! -d $SCRIPTDIR/$git_name ]; then
+		BACKUP_DIR=$(pwd)
+		cd $SCRIPTDIR
 		printf "Download gitsource, please wait a moment ...\n\n"
 		wget -O $git_tar $gitsource_url > /dev/null 2>&1
 
 		printf "Tar gitsource ...\n\n"
 		tar -xzf $git_tar
+		cd $BACKUP_DIR
 	fi
 }
 
@@ -79,12 +82,13 @@ install_gitsource()
 run_gitsource()
 {
 	echo "Launching amd pstate tracer for $1 #$2 tracer_interval: $TRACER_INTERVAL"
-	./amd_pstate_trace.py -n tracer-gitsource-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
+	$SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py -n tracer-gitsource-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
 
 	printf "Make and test gitsource for $1 #$2 make_cpus: $MAKE_CPUS\n"
-	cd $git_name
-	perf stat -a --per-socket -I 1000 -e power/energy-pkg/ /usr/bin/time -o ../$OUTFILE_GIT.time-gitsource-$1-$2.log make test -j$MAKE_CPUS > ../$OUTFILE_GIT-perf-$1-$2.log 2>&1
-	cd ..
+	BACKUP_DIR=$(pwd)
+	cd $SCRIPTDIR/$git_name
+	$PERF stat -a --per-socket -I 1000 -e power/energy-pkg/ /usr/bin/time -o $BACKUP_DIR/$OUTFILE_GIT.time-gitsource-$1-$2.log make test -j$MAKE_CPUS > $BACKUP_DIR/$OUTFILE_GIT-perf-$1-$2.log 2>&1
+	cd $BACKUP_DIR
 
 	for job in `jobs -p`
 	do
diff --git a/tools/testing/selftests/amd-pstate/run.sh b/tools/testing/selftests/amd-pstate/run.sh
index de4d8e9c9565..0803e70b04da 100755
--- a/tools/testing/selftests/amd-pstate/run.sh
+++ b/tools/testing/selftests/amd-pstate/run.sh
@@ -8,9 +8,11 @@ else
 	FILE_MAIN=DONE
 fi
 
-source basic.sh
-source tbench.sh
-source gitsource.sh
+SCRIPTDIR=`dirname "$0"`
+
+source $SCRIPTDIR/basic.sh
+source $SCRIPTDIR/tbench.sh
+source $SCRIPTDIR/gitsource.sh
 
 # amd-pstate-ut only run on x86/x86_64 AMD systems.
 ARCH=$(uname -m 2>/dev/null | sed -e 's/i.86/x86/' -e 's/x86_64/x86/')
@@ -22,6 +24,7 @@ OUTFILE=selftest
 OUTFILE_TBENCH="$OUTFILE.tbench"
 OUTFILE_GIT="$OUTFILE.gitsource"
 
+PERF=/usr/bin/perf
 SYSFS=
 CPUROOT=
 CPUFREQROOT=
@@ -149,8 +152,9 @@ help()
 	     gitsource: Gitsource testing.>]
 	[-t <tbench time limit>]
 	[-p <tbench process number>]
-	[-l <loop times for tbench>]
+	[-l <loop times for tbench/gitsource>]
 	[-i <amd tracer interval>]
+	[-b <perf binary>]
 	[-m <comparative test: acpi-cpufreq>]
 	\n"
 	exit 2
@@ -158,7 +162,7 @@ help()
 
 parse_arguments()
 {
-	while getopts ho:c:t:p:l:i:m: arg
+	while getopts ho:c:t:p:l:i:b:m: arg
 	do
 		case $arg in
 			h) # --help
@@ -189,6 +193,10 @@ parse_arguments()
 				TRACER_INTERVAL=$OPTARG
 				;;
 
+			b) # --perf-binary
+				PERF=`realpath $OPTARG`
+				;;
+
 			m) # --comparative-test
 				COMPARATIVE_TEST=$OPTARG
 				;;
@@ -202,8 +210,8 @@ parse_arguments()
 
 command_perf()
 {
-	if ! command -v perf > /dev/null; then
-		echo $msg please install perf. >&2
+	if ! $PERF -v; then
+		echo $msg please install perf or provide perf binary path as argument >&2
 		exit $ksft_skip
 	fi
 }
diff --git a/tools/testing/selftests/amd-pstate/tbench.sh b/tools/testing/selftests/amd-pstate/tbench.sh
index 49c9850341f6..70e5863e74ea 100755
--- a/tools/testing/selftests/amd-pstate/tbench.sh
+++ b/tools/testing/selftests/amd-pstate/tbench.sh
@@ -64,11 +64,11 @@ post_clear_tbench()
 run_tbench()
 {
 	echo "Launching amd pstate tracer for $1 #$2 tracer_interval: $TRACER_INTERVAL"
-	./amd_pstate_trace.py -n tracer-tbench-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
+	$SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py -n tracer-tbench-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
 
 	printf "Test tbench for $1 #$2 time_limit: $TIME_LIMIT procs_num: $PROCESS_NUM\n"
 	tbench_srv > /dev/null 2>&1 &
-	perf stat -a --per-socket -I 1000 -e power/energy-pkg/ tbench -t $TIME_LIMIT $PROCESS_NUM > $OUTFILE_TBENCH-perf-$1-$2.log 2>&1
+	$PERF stat -a --per-socket -I 1000 -e power/energy-pkg/ tbench -t $TIME_LIMIT $PROCESS_NUM > $OUTFILE_TBENCH-perf-$1-$2.log 2>&1
 
 	pid=`pidof tbench_srv`
 	kill $pid
-- 
2.34.1