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Subject[PATCH 3/9] tracing: Convert softirq events to DEFINE_EVENT
Use TRACE_EVENT_TEMPLATE to remove duplicate code:

text data bss dec hex filename
12781 952 36 13769 35c9 kernel/softirq.o.old
11981 952 32 12965 32a5 kernel/softirq.o

Two events are converted:

softirq: softirq_entry, softirq_exit

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
include/trace/events/irq.h | 46 ++++++++++++++++++++-----------------------
1 files changed, 21 insertions(+), 25 deletions(-)

diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index dcfcd44..f8a94d7 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -82,18 +82,7 @@ TRACE_EVENT(irq_handler_exit,
__entry->irq, __entry->ret ? "handled" : "unhandled")
);

-/**
- * softirq_entry - called immediately before the softirq handler
- * @h: pointer to struct softirq_action
- * @vec: pointer to first struct softirq_action in softirq_vec array
- *
- * The @h parameter, contains a pointer to the struct softirq_action
- * which has a pointer to the action handler that is called. By subtracting
- * the @vec pointer from the @h pointer, we can determine the softirq
- * number. Also, when used in combination with the softirq_exit tracepoint
- * we can determine the softirq latency.
- */
-TRACE_EVENT(softirq_entry,
+TRACE_EVENT_TEMPLATE(softirq,

TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

@@ -112,6 +101,24 @@ TRACE_EVENT(softirq_entry,
);

/**
+ * softirq_entry - called immediately before the softirq handler
+ * @h: pointer to struct softirq_action
+ * @vec: pointer to first struct softirq_action in softirq_vec array
+ *
+ * The @h parameter, contains a pointer to the struct softirq_action
+ * which has a pointer to the action handler that is called. By subtracting
+ * the @vec pointer from the @h pointer, we can determine the softirq
+ * number. Also, when used in combination with the softirq_exit tracepoint
+ * we can determine the softirq latency.
+ */
+DEFINE_EVENT(softirq, softirq_entry,
+
+ TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
+
+ TP_ARGS(h, vec)
+);
+
+/**
* softirq_exit - called immediately after the softirq handler returns
* @h: pointer to struct softirq_action
* @vec: pointer to first struct softirq_action in softirq_vec array
@@ -122,22 +129,11 @@ TRACE_EVENT(softirq_entry,
* combination with the softirq_entry tracepoint we can determine the softirq
* latency.
*/
-TRACE_EVENT(softirq_exit,
+DEFINE_EVENT(softirq, softirq_exit,

TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

- TP_ARGS(h, vec),
-
- TP_STRUCT__entry(
- __field( int, vec )
- ),
-
- TP_fast_assign(
- __entry->vec = (int)(h - vec);
- ),
-
- TP_printk("vec=%d [action=%s]", __entry->vec,
- show_softirq_name(__entry->vec))
+ TP_ARGS(h, vec)
);

#endif /* _TRACE_IRQ_H */
--
1.6.3


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