tracing: Fix undeclared ENOSYS in include/linux/tracepoint.h

The header file include/linux/tracepoint.h may be included without
include/linux/errno.h and then the compiler will fail on building for
undelcared ENOSYS. This patch fixes this problem via including <linux/errno.h>
to include/linux/tracepoint.h.

Signed-off-by: Wu Zhangjin <[email protected]>
LKML-Reference: <1277118549[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>

diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 9a59d1f98cd4114948129d8e9ad95b77da27ec6d..103d1b61aacba635bb7c81cef9e32b70fe220bb7 100644 (file)
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -14,6 +14,7 @@
  * See the file COPYING for more details.
  */
 
+#include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/rcupdate.h>