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authorMasami Hiramatsu <mhiramat@kernel.org>2017-05-23 08:06:53 +0200
committerShuah Khan <shuahkh@osg.samsung.com>2017-06-07 18:59:51 +0200
commitd7b91c0b1c7f40241d8d47f0a2a0d616a1127635 (patch)
tree73568899cc6d314793f77fd018f32d136d6be051 /tools
parentftrace/kprobes: selftests: Check kretprobe maxactive is supported (diff)
downloadlinux-d7b91c0b1c7f40241d8d47f0a2a0d616a1127635.tar.xz
linux-d7b91c0b1c7f40241d8d47f0a2a0d616a1127635.zip
selftests/ftrace: Reset ftrace filter on older kernel
Since older kernel didn't support separated instance of set_ftrace_filter, if the test case set the filter in an instance, it will propagate to top-level instance. This means that the filter setting remains even if we remove the instance, and will cause other tests failure. To avoid this issue, reset the ftrace filter if we detect the propagation. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/ftrace/test.d/instances/instance-event.tc5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
index c73db7863adb..8a353314dc9b 100644
--- a/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
+++ b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
@@ -82,7 +82,10 @@ rmdir foo
if [ -d foo ]; then
fail "foo still exists"
fi
-
+if grep -q "schedule:enable_event:sched:sched_switch" ../set_ftrace_filter; then
+ echo "Older kernel detected. Cleanup filter"
+ echo '!schedule:enable_event:sched:sched_switch' > ../set_ftrace_filter
+fi
instance_slam() {
while :; do