1 files changed, 103 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/record_offcpu.sh b/tools/perf/tests/shell/record_offcpu.sh
new file mode 100755
index 000000000000..d2eba583a2ac
--- /dev/null
+++ b/tools/perf/tests/shell/record_offcpu.sh
@@ -0,0 +1,103 @@
+#!/bin/sh
+# perf record offcpu profiling tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
+
+cleanup() {
+  rm -f ${perfdata}
+  rm -f ${perfdata}.old
+  trap - exit term int
+}
+
+trap_cleanup() {
+  cleanup
+  exit 1
+}
+trap trap_cleanup exit term int
+
+test_offcpu_priv() {
+  echo "Checking off-cpu privilege"
+
+  if [ `id -u` != 0 ]
+  then
+    echo "off-cpu test [Skipped permission]"
+    err=2
+    return
+  fi
+  if perf record --off-cpu -o /dev/null --quiet true 2>&1 | grep BUILD_BPF_SKEL
+  then
+    echo "off-cpu test [Skipped missing BPF support]"
+    err=2
+    return
+  fi
+}
+
+test_offcpu_basic() {
+  echo "Basic off-cpu test"
+
+  if ! perf record --off-cpu -e dummy -o ${perfdata} sleep 1 2> /dev/null
+  then
+    echo "Basic off-cpu test [Failed record]"
+    err=1
+    return
+  fi
+  if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"
+  then
+    echo "Basic off-cpu test [Failed no event]"
+    err=1
+    return
+  fi
+  if ! perf report -i ${perfdata} -q --percent-limit=90 | egrep -q sleep
+  then
+    echo "Basic off-cpu test [Failed missing output]"
+    err=1
+    return
+  fi
+  echo "Basic off-cpu test [Success]"
+}
+
+test_offcpu_child() {
+  echo "Child task off-cpu test"
+
+  # perf bench sched messaging creates 400 processes
+  if ! perf record --off-cpu -e dummy -o ${perfdata} -- \
+    perf bench sched messaging -g 10 > /dev/null 2&>1
+  then
+    echo "Child task off-cpu test [Failed record]"
+    err=1
+    return
+  fi
+  if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"
+  then
+    echo "Child task off-cpu test [Failed no event]"
+    err=1
+    return
+  fi
+  # each process waits for read and write, so it should be more than 800 events
+  if ! perf report -i ${perfdata} -s comm -q -n -t ';' --percent-limit=90 | \
+    awk -F ";" '{ if (NF > 3 && int($3) < 800) exit 1; }'
+  then
+    echo "Child task off-cpu test [Failed invalid output]"
+    err=1
+    return
+  fi
+  echo "Child task off-cpu test [Success]"
+}
+
+
+test_offcpu_priv
+
+if [ $err = 0 ]; then
+  test_offcpu_basic
+fi
+
+if [ $err = 0 ]; then
+  test_offcpu_child
+fi
+
+cleanup
+exit $err