1 files changed, 19 insertions, 0 deletions
diff --git a/perf/perf_event.h b/perf/perf_event.h
index 3b6c3e5..7d7cb5b 100644
--- a/perf/perf_event.h
+++ b/perf/perf_event.h
@@ -872,4 +872,23 @@ static inline void perf_event_init(void)				{ }
 	perf_output_copy((handle), &(x), sizeof(x))
 
 #endif /* __KERNEL__ */
+
+
+/*
+ * trace_flag_type is an enumeration that holds different
+ * states when a trace occurs. These are:
+ *  IRQS_OFF            - interrupts were disabled
+ *  IRQS_NOSUPPORT      - arch does not support irqs_disabled_flags
+ *  NEED_RESCED         - reschedule is requested
+ *  HARDIRQ             - inside an interrupt handler
+ *  SOFTIRQ             - inside a softirq handler
+ */
+enum trace_flag_type {
+	TRACE_FLAG_IRQS_OFF		= 0x01,
+	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
+	TRACE_FLAG_NEED_RESCHED		= 0x04,
+	TRACE_FLAG_HARDIRQ		= 0x08,
+	TRACE_FLAG_SOFTIRQ		= 0x10,
+};
+
 #endif /* _LINUX_PERF_EVENT_H */