commit 14adff1cfa06a3d4d3281a9bf7848b556d84c20d
author Josh Gao <jmgao@google.com> Fri Apr 29 12:00:55 2016 -0700
committer Josh Gao <jmgao@google.com> Fri Apr 29 16:39:50 2016 -0700
tree ce1fb2867f69e49f57d0bbe8a9099b09beda0c19
parent 5a3d5cac642f9e58b2c510eab23789fb4fc3a753

Add versioning information to symbols.

Bug: http://b/28178111
Change-Id: I46bf95accd819f4521afb1173d8badcc5e9df31c

libc/include/sys/timerfd.h

diff --git a/libc/include/sys/timerfd.h b/libc/include/sys/timerfd.h
index 1aa97b4..a189742 100644
--- a/libc/include/sys/timerfd.h
+++ b/libc/include/sys/timerfd.h
@@ -41,10 +41,10 @@
 #define TFD_CLOEXEC O_CLOEXEC
 #define TFD_NONBLOCK O_NONBLOCK
 
-extern int timerfd_create(clockid_t, int);
-extern int timerfd_settime(int, int, const struct itimerspec*,
-                           struct itimerspec*);
-extern int timerfd_gettime(int, struct itimerspec*);
+extern int timerfd_create(clockid_t, int) __INTRODUCED_IN(21);
+extern int timerfd_settime(int, int, const struct itimerspec*, struct itimerspec*)
+  __INTRODUCED_IN(21);
+extern int timerfd_gettime(int, struct itimerspec*) __INTRODUCED_IN(21);
 
 __END_DECLS