1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 8c9b7a1c4138..211e7ad2baf5 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -264,6 +264,7 @@ enum {
         FTRACE_EVENT_FL_NO_SET_FILTER_BIT,
         FTRACE_EVENT_FL_SOFT_MODE_BIT,
         FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
+        FTRACE_EVENT_FL_TRIGGER_MODE_BIT,
 };
 
 /*
@@ -275,6 +276,7 @@ enum {
  *  SOFT_MODE     - The event is enabled/disabled by SOFT_DISABLED
  *  SOFT_DISABLED - When set, do not trace the event (even though its
  *                   tracepoint may be enabled)
+ *  TRIGGER_MODE  - When set, invoke the triggers associated with the event
  */
 enum {
         FTRACE_EVENT_FL_ENABLED         = (1 << FTRACE_EVENT_FL_ENABLED_BIT),
@@ -283,6 +285,7 @@ enum {
         FTRACE_EVENT_FL_NO_SET_FILTER   = (1 << FTRACE_EVENT_FL_NO_SET_FILTER_BIT),
         FTRACE_EVENT_FL_SOFT_MODE       = (1 << FTRACE_EVENT_FL_SOFT_MODE_BIT),
         FTRACE_EVENT_FL_SOFT_DISABLED   = (1 << FTRACE_EVENT_FL_SOFT_DISABLED_BIT),
+        FTRACE_EVENT_FL_TRIGGER_MODE    = (1 << FTRACE_EVENT_FL_TRIGGER_MODE_BIT),
 };
 
 struct ftrace_event_file {
@@ -292,6 +295,7 @@ struct ftrace_event_file {
         struct dentry                   *dir;
         struct trace_array              *tr;
         struct ftrace_subsystem_dir     *system;
+        struct list_head                triggers;
 
         /*
          * 32 bit flags:
@@ -299,6 +303,7 @@ struct ftrace_event_file {
          *   bit 1:             enabled cmd record
          *   bit 2:             enable/disable with the soft disable bit
          *   bit 3:             soft disabled
+         *   bit 4:             trigger enabled
          *
          * Note: The bits must be set atomically to prevent races
          * from other writers. Reads of flags do not need to be in
@@ -310,6 +315,7 @@ struct ftrace_event_file {
          */
         unsigned long           flags;
         atomic_t                sm_ref; /* soft-mode reference counter */
+        atomic_t                tm_ref; /* trigger-mode reference counter */
 };
 
 #define __TRACE_EVENT_FLAGS(name, value)                                \
@@ -337,6 +343,10 @@ struct ftrace_event_file {
 
 #define MAX_FILTER_STR_VAL      256     /* Should handle KSYM_SYMBOL_LEN */
 
+enum event_trigger_type {
+        ETT_NONE                = (0),
+};
+
 extern void destroy_preds(struct ftrace_event_file *file);
 extern void destroy_call_preds(struct ftrace_event_call *call);
 extern int filter_match_preds(struct event_filter *filter, void *rec);
@@ -347,6 +357,7 @@ extern int filter_check_discard(struct ftrace_event_file *file, void *rec,
 extern int call_filter_check_discard(struct ftrace_event_call *call, void *rec,
                                      struct ring_buffer *buffer,
                                      struct ring_buffer_event *event);
+extern void event_triggers_call(struct ftrace_event_file *file);
 
 enum {
         FILTER_OTHER = 0,