1 files changed, 74 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/stat_bpf_counters.sh b/tools/perf/tests/shell/stat_bpf_counters.sh
new file mode 100755
index 000000000000..95d2ad5d17c6
--- /dev/null
+++ b/tools/perf/tests/shell/stat_bpf_counters.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# perf stat --bpf-counters test (exclusive)
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+workload="perf test -w sqrtloop"
+
+# check whether $2 is within +/- 20% of $1
+compare_number()
+{
+	first_num=$1
+	second_num=$2
+
+	# upper bound is first_num * 120%
+	upper=$(expr $first_num + $first_num / 5 )
+	# lower bound is first_num * 80%
+	lower=$(expr $first_num - $first_num / 5 )
+
+	if [ $second_num -gt $upper ] || [ $second_num -lt $lower ]; then
+		echo "The difference between $first_num and $second_num are greater than 20%."
+		exit 1
+	fi
+}
+
+check_counts()
+{
+	base_instructions=$1
+	bpf_instructions=$2
+
+	if [ "$base_instructions" = "<not" ]; then
+		echo "Skipping: instructions event not counted"
+		exit 2
+	fi
+	if [ "$bpf_instructions" = "<not" ]; then
+		echo "Failed: instructions not counted with --bpf-counters"
+		exit 1
+	fi
+}
+
+test_bpf_counters()
+{
+	printf "Testing --bpf-counters "
+	base_instructions=$(perf stat --no-big-num -e instructions -- $workload 2>&1 | awk '/instructions/ {print $1}')
+	bpf_instructions=$(perf stat --no-big-num --bpf-counters -e instructions -- $workload  2>&1 | awk '/instructions/ {print $1}')
+	check_counts $base_instructions $bpf_instructions
+	compare_number $base_instructions $bpf_instructions
+	echo "[Success]"
+}
+
+test_bpf_modifier()
+{
+	printf "Testing bpf event modifier "
+	stat_output=$(perf stat --no-big-num -e instructions/name=base_instructions/,instructions/name=bpf_instructions/b -- $workload 2>&1)
+	base_instructions=$(echo "$stat_output"| awk '/base_instructions/ {print $1}')
+	bpf_instructions=$(echo "$stat_output"| awk '/bpf_instructions/ {print $1}')
+	check_counts $base_instructions $bpf_instructions
+	compare_number $base_instructions $bpf_instructions
+	echo "[Success]"
+}
+
+# skip if --bpf-counters is not supported
+if ! perf stat -e instructions --bpf-counters true > /dev/null 2>&1; then
+	if [ "$1" = "-v" ]; then
+		echo "Skipping: --bpf-counters not supported"
+		perf --no-pager stat -e instructions --bpf-counters true || true
+	fi
+	exit 2
+fi
+
+test_bpf_counters
+test_bpf_modifier
+
+exit 0