[lttng-dev] [RFC-PATCH] Adding trap tracepoints definitions

[Francis Deslauriers]

This patch adds new trap tracepoint definitions. It enables each
architecture to add trap instrumentation.

Signed-off-by: Francis Deslauriers <fdeslaur at gmail.com>
---
 include/trace/events/trap.h |   47 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 include/trace/events/trap.h

diff --git a/include/trace/events/trap.h b/include/trace/events/trap.h
new file mode 100644
index 0000000..171b9cf
--- /dev/null
+++ b/include/trace/events/trap.h
@@ -0,0 +1,47 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM trap
+
+#if !defined(_TRACE_TRAP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_TRAP_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(trap_entry,
+
+	TP_PROTO(struct pt_regs *regs, long trap),
+
+	TP_ARGS(regs, trap),
+
+	TP_STRUCT__entry(
+		__field(	long,		trap	)
+		__field(	unsigned long,	ip	)
+	),
+
+	TP_fast_assign(
+		__entry->trap	= trap;
+		__entry->ip	= regs ? instruction_pointer(regs) : 0UL;
+	),
+
+	TP_printk("number=%ld ip=%lu", __entry->trap, __entry->ip)
+);
+
+TRACE_EVENT(trap_exit,
+
+	TP_PROTO(long trap),
+
+	TP_ARGS(trap),
+
+	TP_STRUCT__entry(
+		__field(	long,	trap	)
+	),
+
+	TP_fast_assign(
+		__entry->trap	= trap;
+	),
+
+	TP_printk("number=%ld", __entry->trap)
+);
+
+#endif /* _TRACE_TRAP_H */
+/* This part must be outside protection */
+#include <trace/define_trace.h>
-- 
1.7.10.4