From 5b56a07b9c461bb4db26797c82d6ac3be0f83a94 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 30 Aug 2018 23:22:21 +0900 Subject: selftests/ftrace: Add function profiling stat testcase Add a testcase for function profiling per-cpu statistics interface. There is already func_profile.tc, but that is mainly focusing on the combination of function-profiler and function tracer. This testcase ensures trace_stat per-cpu function statistics is correctly updated. Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt (VMware) Signed-off-by: Shuah Khan (Samsung OSG) --- .../ftrace/test.d/ftrace/func_profile_stat.tc | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc (limited to 'tools/testing') diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc new file mode 100644 index 000000000000..0d501058aa75 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc @@ -0,0 +1,22 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function profiling + +[ ! -f function_profile_enabled ] && exit_unsupported + +: "Enable function profile" +echo 1 > function_profile_enabled + +: "Profile must be updated" +cp trace_stat/function0 $TMPDIR/ +( echo "forked"; sleep 1 ) +: "diff returns 0 if there is no difference" +! diff trace_stat/function0 $TMPDIR/function0 + +echo 0 > function_profile_enabled + +: "Profile must NOT be updated" +cp trace_stat/function0 $TMPDIR/ +( echo "forked"; sleep 1 ) +: "diff returns 0 if there is no difference" +diff trace_stat/function0 $TMPDIR/function0 -- cgit v1.2.3