[PATCH] fix compile warnings: enumeration value ‘TRACE_REG_PERF_REGISTER’ not handled in switch

[PATCH] fix compile warnings: enumeration value ‘TRACE_REG_PERF_REGISTER’ not handled in switch

[Li Zhong]

This patch tries to fix the compile warnings: 
kernel/trace/trace_events.c: In function ‘ftrace_event_reg’:
kernel/trace/trace_events.c:152: warning: enumeration value
‘TRACE_REG_PERF_REGISTER’ not handled in switch
kernel/trace/trace_events.c:152: warning: enumeration value
‘TRACE_REG_PERF_UNREGISTER’ not handled in switch
kernel/trace/trace_kprobe.c: In function ‘kprobe_register’:
kernel/trace/trace_kprobe.c:1899: warning: enumeration value
‘TRACE_REG_PERF_REGISTER’ not handled in switch
kernel/trace/trace_kprobe.c:1899: warning: enumeration value
‘TRACE_REG_PERF_UNREGISTER’ not handled in switch

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
---
 include/linux/ftrace_event.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index c3da42d..235753d 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -144,8 +144,10 @@ struct event_filter;
 enum trace_reg {
 	TRACE_REG_REGISTER,
 	TRACE_REG_UNREGISTER,
+#ifdef CONFIG_PERF_EVENTS
 	TRACE_REG_PERF_REGISTER,
 	TRACE_REG_PERF_UNREGISTER,
+#endif
 };
 
 struct ftrace_event_call;
-- 
1.7.1