On Mon, 20 Jul 2020 10:21:15 +0800 Tingwei Zhang <[email protected]> wrote:
> Only function traces can be exported to other destinations currently. > This patch exports event trace as well. > > Signed-off-by: Tingwei Zhang <[email protected]> > --- > kernel/trace/trace.c | 24 +++++++++++++----------- > 1 file changed, 13 insertions(+), 11 deletions(-) > > diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c > index bb62269724d5..aef6330836e2 100644 > --- a/kernel/trace/trace.c > +++ b/kernel/trace/trace.c > @@ -2697,17 +2697,6 @@ int tracepoint_printk_sysctl(struct ctl_table *table, > int write, > return ret; > } > > -void trace_event_buffer_commit(struct trace_event_buffer *fbuffer) > -{ > - if (static_key_false(&tracepoint_printk_key.key)) > - output_printk(fbuffer); > - > - event_trigger_unlock_commit_regs(fbuffer->trace_file, fbuffer->buffer, > - fbuffer->event, fbuffer->entry, > - fbuffer->flags, fbuffer->pc, fbuffer->regs); > -} > -EXPORT_SYMBOL_GPL(trace_event_buffer_commit); > - Please move the ftrace_exports routines up, instead of moving the trace_event_buffer_commit() down. As it fits better where it is (next to the other buffer_commit code). -- Steve > /* > * Skip 3: > * > @@ -2868,6 +2857,19 @@ int unregister_ftrace_export(struct > trace_export *export) } > EXPORT_SYMBOL_GPL(unregister_ftrace_export); > > +void trace_event_buffer_commit(struct trace_event_buffer *fbuffer) > +{ > + if (static_key_false(&tracepoint_printk_key.key)) > + output_printk(fbuffer); > + > + if (static_branch_unlikely(&ftrace_exports_enabled)) > + ftrace_exports(fbuffer->event); > + event_trigger_unlock_commit_regs(fbuffer->trace_file, > fbuffer->buffer, > + fbuffer->event, fbuffer->entry, > + fbuffer->flags, fbuffer->pc, > fbuffer->regs); +} > +EXPORT_SYMBOL_GPL(trace_event_buffer_commit); > + > void > trace_function(struct trace_array *tr, > unsigned long ip, unsigned long parent_ip, unsigned > long flags,
