If we run ftracetest on the kernel with CONFIG_DYNAMIC_FTRACE=n, there is no set_ftrace_filter and all test cases are failed, because reset_ftrace_filter() returns an error. Let's check whether set_ftrace_filter exists in reset_ftrace_filter() and clean up only set_ftrace_notrace in initialize_ftrace(). Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> --- Changes in v4: - Clear set_ftrace_notrace --- tools/testing/selftests/ftrace/test.d/functions | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 86986c4bba54..5d4550591ff9 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -46,6 +46,9 @@ reset_events_filter() { # reset all current setting filters } reset_ftrace_filter() { # reset all triggers in set_ftrace_filter + if [ ! -f set_ftrace_filter ]; then + return 0 + fi echo > set_ftrace_filter grep -v '^#' set_ftrace_filter | while read t; do tr=`echo $t | cut -d: -f2` @@ -93,7 +96,7 @@ initialize_ftrace() { # Reset ftrace to initial-state disable_events [ -f set_event_pid ] && echo > set_event_pid [ -f set_ftrace_pid ] && echo > set_ftrace_pid - [ -f set_ftrace_filter ] && echo | tee set_ftrace_* + [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace [ -f set_graph_function ] && echo | tee set_graph_* [ -f stack_trace_filter ] && echo > stack_trace_filter [ -f kprobe_events ] && echo > kprobe_events