HI Divya, On Wed, 20 Mar 2019 11:28:51 -0700 Divya Indi <divya.i...@oracle.com> wrote:
> Ftrace provides the feature “instances” that provides the capability to > create multiple Ftrace ring buffers. However, currently these buffers > are created/accessed via userspace only. The kernel APIs providing these > features are not exported, hence cannot be used by other kernel > components. > > This patch aims to extend this infrastructure to provide the > flexibility to create/log/remove/ enable-disable existing trace events > to these buffers from within the kernel. > > Signed-off-by: Divya Indi <divya.i...@oracle.com> > Reviewed-by: Joe Jin <joe....@oracle.com> Would you tested these APIs with your module? Since, [...] > diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c > index 5b3b0c3..81c038e 100644 > --- a/kernel/trace/trace_events.c > +++ b/kernel/trace/trace_events.c > @@ -832,6 +832,7 @@ static int ftrace_set_clr_event(struct trace_array *tr, > char *buf, int set) > > return ret; > } > +EXPORT_SYMBOL_GPL(ftrace_set_clr_event); I found this exports a static function to module. Did it work? Thank you, -- Masami Hiramatsu <mhira...@kernel.org>
