--- zzzz-none-000/linux-3.10.107/include/trace/events/irq.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/trace/events/irq.h	2021-02-04 17:41:59.000000000 +0000
@@ -8,20 +8,36 @@
 
 struct irqaction;
 struct softirq_action;
+struct tasklet_struct;
+
+#define SOFTIRQ_NAME_LIST				\
+			 softirq_name(HI)		\
+			 softirq_name(TIMER)		\
+			 softirq_name(NET_TX)		\
+			 softirq_name(NET_RX)		\
+			 softirq_name(BLOCK)		\
+			 softirq_name(BLOCK_IOPOLL)	\
+			 softirq_name(TASKLET)		\
+			 softirq_name(SCHED)		\
+			 softirq_name(HRTIMER)		\
+			 softirq_name_end(RCU)
+
+#undef softirq_name
+#undef softirq_name_end
+
+#define softirq_name(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
+#define softirq_name_end(sirq)  TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
+
+SOFTIRQ_NAME_LIST
+
+#undef softirq_name
+#undef softirq_name_end
+
+#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq },
+#define softirq_name_end(sirq) { sirq##_SOFTIRQ, #sirq }
 
-#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
 #define show_softirq_name(val)				\
-	__print_symbolic(val,				\
-			 softirq_name(HI),		\
-			 softirq_name(TIMER),		\
-			 softirq_name(NET_TX),		\
-			 softirq_name(NET_RX),		\
-			 softirq_name(BLOCK),		\
-			 softirq_name(BLOCK_IOPOLL),	\
-			 softirq_name(TASKLET),		\
-			 softirq_name(SCHED),		\
-			 softirq_name(HRTIMER),		\
-			 softirq_name(RCU))
+	__print_symbolic(val, SOFTIRQ_NAME_LIST)
 
 /**
  * irq_handler_entry - called immediately before the irq action handler
@@ -84,6 +100,54 @@
 		  __entry->irq, __entry->ret ? "handled" : "unhandled")
 );
 
+/**
+ * tlet_entry - called immediately before the tasklet handler
+ * @t: pointer to struct tasklet_struct
+ *
+ * When used in combination with the tlet_exit tracepoint we can
+ * determine the latency of the tasklet.
+ */
+TRACE_EVENT(tlet_entry,
+
+	TP_PROTO(struct tasklet_struct *t),
+
+	TP_ARGS(t),
+
+	TP_STRUCT__entry(
+		__field(void *, func)
+	),
+
+	TP_fast_assign(
+		__entry->func = t->func;
+	),
+
+	TP_printk("func=%pf", __entry->func)
+);
+
+/**
+ * tlet_exit - called immediately after the tasklet handler returns
+ * @t: pointer to struct tasklet_struct
+ *
+ * When used in combination with the tasklet_entry tracepoint we can
+ * determine the latency of the tasklet.
+ */
+TRACE_EVENT(tlet_exit,
+
+	TP_PROTO(struct tasklet_struct *t),
+
+	TP_ARGS(t),
+
+	TP_STRUCT__entry(
+		__field(void *, func)
+	),
+
+	TP_fast_assign(
+		__entry->func = t->func;
+	),
+
+	TP_printk("func=%pf", __entry->func)
+);
+
 DECLARE_EVENT_CLASS(softirq,
 
 	TP_PROTO(unsigned int vec_nr),
@@ -107,7 +171,7 @@
  * @vec_nr:  softirq vector number
  *
  * When used in combination with the softirq_exit tracepoint
- * we can determine the softirq handler runtine.
+ * we can determine the softirq handler routine.
  */
 DEFINE_EVENT(softirq, softirq_entry,
 
@@ -121,7 +185,7 @@
  * @vec_nr:  softirq vector number
  *
  * When used in combination with the softirq_entry tracepoint
- * we can determine the softirq handler runtine.
+ * we can determine the softirq handler routine.
  */
 DEFINE_EVENT(softirq, softirq_exit,