1 files changed, 99 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/stat+shadow_stat.sh b/tools/perf/tests/shell/stat+shadow_stat.sh
new file mode 100755
index 000000000000..cabbbf17c662
--- /dev/null
+++ b/tools/perf/tests/shell/stat+shadow_stat.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+# perf stat metrics (shadow stat) test
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+THRESHOLD=0.015
+
+# skip if system-wide mode is forbidden
+perf stat -a true > /dev/null 2>&1 || exit 2
+
+# skip if on hybrid platform
+perf stat -a -e cycles sleep 1 2>&1 | grep -e cpu_core && exit 2
+
+test_global_aggr()
+{
+	perf stat -a --no-big-num -M insn_per_cycle sleep 1  2>&1 | \
+	grep -e cycles -e instructions | \
+	while read num evt _ ipc rest
+	do
+		# skip not counted events
+		if [ "$num" = "<not" ]; then
+			continue
+		fi
+
+		# save cycles count
+		if [ "$evt" = "cycles" ]; then
+			cyc=$num
+			continue
+		fi
+
+		# skip if no cycles
+		if [ -z "$cyc" ]; then
+			continue
+		fi
+
+		# use printf for rounding and a leading zero
+		res=`echo $num $cyc | awk '{printf "%.2f", $1 / $2}'`
+		if [ "$ipc" != "$res" ]; then
+			# check the difference from the real result for FP imperfections
+			diff=`echo $ipc $res $THRESHOLD | \
+			awk '{x = ($1 - $2) < 0 ? ($2 - $1) : ($1 - $2); print (x > $3)}'`
+
+			if [ $diff -eq 1 ]; then
+				echo "IPC is different: $res != $ipc  ($num / $cyc)"
+				exit 1
+			fi
+
+			echo "Warning: Difference of IPC is under the threshold"
+		fi
+	done
+}
+
+test_no_aggr()
+{
+	perf stat -a -A --no-big-num -M insn_per_cycle sleep 1  2>&1 | \
+	grep ^CPU | \
+	while read cpu num evt _ ipc rest
+	do
+		# skip not counted events
+		if [ "$num" = "<not" ]; then
+			continue
+		fi
+
+		# save cycles count
+		if [ "$evt" = "cycles" ]; then
+			results="$results $cpu:$num"
+			continue
+		fi
+
+		cyc=${results##* $cpu:}
+		cyc=${cyc%% *}
+
+		# skip if no cycles
+		if [ -z "$cyc" ]; then
+			continue
+		fi
+
+		# use printf for rounding and a leading zero
+		res=`echo $num $cyc | awk '{printf "%.2f", $1 / $2}'`
+		if [ "$ipc" != "$res" ]; then
+			# check difference from the real result for FP imperfections
+			diff=`echo $ipc $res $THRESHOLD | \
+			awk '{x = ($1 - $2) < 0 ? ($2 - $1) : ($1 - $2); print (x > $3)}'`
+
+			if [ $diff -eq 1 ]; then
+				echo "IPC is different: $res != $ipc  ($num / $cyc)"
+				exit 1
+			fi
+
+			echo "Warning: Difference of IPC is under the threshold"
+		fi
+	done
+}
+
+test_global_aggr
+test_no_aggr
+
+exit 0