From: Masami Hiramatsu (Google) <[email protected]> Since tracer_init_tracefs_work_func() only updates the tracer options for the global_trace, the instances created by the kernel cmdline do not have those options.
Fix to update tracer options for those boot-time created instances to show those options. Signed-off-by: Masami Hiramatsu (Google) <[email protected]> Fixes: f20a580627f43 ("ftrace: Allow instances to use function tracing") --- kernel/trace/trace.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8ae95800592d..2e87060e1d5a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10903,6 +10903,7 @@ static struct notifier_block trace_module_nb = { static __init void tracer_init_tracefs_work_func(struct work_struct *work) { + struct trace_array *tr; event_trace_init(); @@ -10937,7 +10938,8 @@ static __init void tracer_init_tracefs_work_func(struct work_struct *work) create_trace_instances(NULL); - update_tracer_options(&global_trace); + list_for_each_entry(tr, &ftrace_trace_arrays, list) + update_tracer_options(tr); } static __init int tracer_init_tracefs(void)
