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-rw-r--r--include/linux/ftrace_event.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 2a4a40749911..07e0a6d64a24 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -16,13 +16,16 @@ struct dentry;
* bash-15816 [01] 235.197585: idle_cpu <- irq_enter
*/
struct trace_entry {
- int type;
+ unsigned short type;
unsigned char flags;
unsigned char preempt_count;
int pid;
int tgid;
};
+#define FTRACE_MAX_EVENT \
+ ((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)
+
/*
* Trace iterator - used by printout routines who present trace
* results to users and which routines might sleep, etc:
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