[PATCH] perf test: Do not fail Intel-PT misc test w/o libpython

[Namhyung Kim]

The virtuall LBR test uses a python script to check the max size of
branch stack in the Intel-PT generated LBR.  But it didn't check whether
python scripting is available (as it's optional).

Let's skip the test if the python support is not available.

Fixes: f77811a0f625 ("perf test: test_intel_pt.sh: Add 9 tests")
Cc: Ammy Yi <ammy.yi@xxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
 tools/perf/tests/shell/test_intel_pt.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh
index 4c0aabbe33bd..e66b7d977462 100755
--- a/tools/perf/tests/shell/test_intel_pt.sh
+++ b/tools/perf/tests/shell/test_intel_pt.sh
@@ -526,6 +526,12 @@ test_kernel_trace()
 test_virtual_lbr()
 {
 	echo "--- Test virtual LBR ---"
+	# Check if python script is supported
+	libpython=$(ldd $(which perf) | grep -c python)
+	if [ "${libpython}" != "1" ] ; then
+		echo "SKIP: python scripting is not supported"
+		return 2
+	fi
 
 	# Python script to determine the maximum size of branch stacks
 	cat << "_end_of_file_" > "${maxbrstack}"
-- 
2.38.0.135.g90850a2211-goog