1 files changed, 86 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/ftrace.sh b/tools/perf/tests/shell/ftrace.sh
new file mode 100755
index 000000000000..c243731d2fbf
--- /dev/null
+++ b/tools/perf/tests/shell/ftrace.sh
@@ -0,0 +1,86 @@
+#!/bin/sh
+# perf ftrace tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+# perf ftrace commands only works for root
+if [ "$(id -u)" != 0 ]; then
+    echo "perf ftrace test  [Skipped: no permission]"
+    exit 2
+fi
+
+output=$(mktemp /tmp/__perf_test.ftrace.XXXXXX)
+
+cleanup() {
+  rm -f "${output}"
+
+  trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+  cleanup
+  exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+# this will be set in test_ftrace_trace()
+target_function=
+
+test_ftrace_list() {
+    echo "perf ftrace list test"
+    perf ftrace -F > "${output}"
+    # this will be used in test_ftrace_trace()
+    sleep_functions=$(grep 'sys_.*sleep$' "${output}")
+    echo "syscalls for sleep:"
+    echo "${sleep_functions}"
+    echo "perf ftrace list test  [Success]"
+}
+
+test_ftrace_trace() {
+    echo "perf ftrace trace test"
+    perf ftrace trace --graph-opts depth=5 sleep 0.1 > "${output}"
+    # it should have some function name contains 'sleep'
+    grep "^#" "${output}"
+    grep -F 'sleep()' "${output}"
+    # find actual syscall function name
+    for FN in ${sleep_functions}; do
+	if grep -q "${FN}" "${output}"; then
+	    target_function="${FN}"
+	    echo "perf ftrace trace test  [Success]"
+	    return
+	fi
+    done
+
+    echo "perf ftrace trace test  [Failure: sleep syscall not found]"
+    exit 1
+}
+
+test_ftrace_latency() {
+    echo "perf ftrace latency test"
+    echo "target function: ${target_function}"
+    perf ftrace latency -T "${target_function}" sleep 0.1 > "${output}"
+    grep "^#" "${output}"
+    grep "###" "${output}"
+    echo "perf ftrace latency test  [Success]"
+}
+
+test_ftrace_profile() {
+    echo "perf ftrace profile test"
+    perf ftrace profile --graph-opts depth=5 sleep 0.1 > "${output}"
+    grep ^# "${output}"
+    time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}"
+    # 100283.000 100283.000 100283.000          1   __x64_sys_clock_nanosleep
+    # Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds
+    # Strip the _x64_sys part to work with other architectures
+    grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*clock_nanosleep" "${output}"
+    echo "perf ftrace profile test  [Success]"
+}
+
+test_ftrace_list
+test_ftrace_trace
+test_ftrace_latency
+test_ftrace_profile
+
+cleanup
+exit 0