tracing: add filter event logic to special, mmiotrace and boot tracers

Now that the pluging tracers use macros to create the structures and
automate the exporting of their formats to the format files, they also
automatically get a filter file.

This patch adds the code to implement the filter logic in the trace
recordings.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ef82a7fabf3b..fd52a19dd172 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1206,6 +1206,7 @@ ftrace_trace_special(void *__tr,
                      unsigned long arg1, unsigned long arg2, unsigned long arg3,
                      int pc)
 {
+        struct ftrace_event_call *call = &event_special;
         struct ring_buffer_event *event;
         struct trace_array *tr = __tr;
         struct ring_buffer *buffer = tr->buffer;
@@ -1219,7 +1220,9 @@ ftrace_trace_special(void *__tr,
         entry->arg1                     = arg1;
         entry->arg2                     = arg2;
         entry->arg3                     = arg3;
-        trace_buffer_unlock_commit(buffer, event, 0, pc);
+
+        if (!filter_check_discard(call, entry, buffer, event))
+                trace_buffer_unlock_commit(buffer, event, 0, pc);
 }
 
 void