From: Steven Rostedt (VMware) Date: Wed, 3 Jul 2019 19:46:08 +0000 (-0400) Subject: ftrace/selftest: Test if set_event/ftrace_pid exists before writing X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6e55f320f00e4db7144a4906dd8ac53701891e31;p=linux.git ftrace/selftest: Test if set_event/ftrace_pid exists before writing While testing on a very old kernel (3.5), the tests failed because the write to set_event_pid in the setup code, did not exist. The tests themselves could pass, but the setup failed causing an error. Other files test for existance before writing to them. Do the same for set_event_pid and set_ftrace_pid. Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 779ec11f61bda..1d96c5f7e402b 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -91,8 +91,8 @@ initialize_ftrace() { # Reset ftrace to initial-state reset_events_filter reset_ftrace_filter disable_events - echo > set_event_pid # event tracer is always on - echo > set_ftrace_pid + [ -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_graph_function ] && echo | tee set_graph_* [ -f stack_trace_filter ] && echo > stack_trace_filter