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| author |   Masami Hiramatsu <mhiramat@kernel.org> | 2018-08-30 23:22:21 +0900 |
|---|---|---|
| committer |   Shuah Khan (Samsung OSG) <shuah@kernel.org> | 2018-10-24 14:49:36 -0600 |
| commit | 5b56a07b9c461bb4db26797c82d6ac3be0f83a94 (patch) | |
| tree | f68e1870c7f00ef808eddcee7daf032ad20fea92 /tools/testing/selftests/ftrace | |
| parent | selftests/ftrace: Add ringbuffer size changing testcase (diff) | |
| download | wireguard-linux-5b56a07b9c461bb4db26797c82d6ac3be0f83a94.tar.xz wireguard-linux-5b56a07b9c461bb4db26797c82d6ac3be0f83a94.zip | |
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 <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Diffstat (limited to 'tools/testing/selftests/ftrace')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc | 22 |
1 files changed, 22 insertions, 0 deletions
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 |