From 8c77f0ba41566b5a54a49c53107cc855d89ff4c1 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (VMware)" Date: Wed, 18 Mar 2020 11:13:45 -0400 Subject: selftest/ftrace: Fix function trigger test to handle trace not disabling the tracer The ftrace selftest "ftrace - test for function traceon/off triggers" enables all events and reads the trace file. Now that the trace file does not disable tracing, and will attempt to continually read new data that is added, the selftest gets stuck reading the trace file. This is because the data added to the trace file will fill up quicker than the reading of it. By only enabling scheduling events, the read can keep up with the writes. Instead of enabling all events, only enable the scheduler events. Link: http://lkml.kernel.org/r/20200318111345.0516642e@gandalf.local.home Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- .../testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/testing/selftests/ftrace') diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc index 0c04282d33dd..1947387fe976 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc @@ -41,7 +41,7 @@ fi echo '** ENABLE EVENTS' -echo 1 > events/enable +echo 1 > events/sched/enable echo '** ENABLE TRACING' enable_tracing -- cgit v1.2.3-59-g8ed1b