Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

[cascardo/linux.git] / include / linux / time.h

diff --git a/include/linux/time.h b/include/linux/time.h
index ea3559f..cb34e35 100644 (file)
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -76,9 +76,25 @@ extern unsigned long mktime(const unsigned int year, const unsigned int mon,
                            const unsigned int min, const unsigned int sec);
 
 extern void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec);
+
+/*
+ * timespec_add_safe assumes both values are positive and checks
+ * for overflow. It will return TIME_T_MAX if the reutrn would be
+ * smaller then either of the arguments.
+ */
 extern struct timespec timespec_add_safe(const struct timespec lhs,
                                         const struct timespec rhs);
 
+
+static inline struct timespec timespec_add(struct timespec lhs,
+                                               struct timespec rhs)
+{
+       struct timespec ts_delta;
+       set_normalized_timespec(&ts_delta, lhs.tv_sec + rhs.tv_sec,
+                               lhs.tv_nsec + rhs.tv_nsec);
+       return ts_delta;
+}
+
 /*
  * sub = lhs - rhs, in normalized form
  */
@@ -97,8 +113,6 @@ static inline struct timespec timespec_sub(struct timespec lhs,
 #define timespec_valid(ts) \
        (((ts)->tv_sec >= 0) && (((unsigned long) (ts)->tv_nsec) < NSEC_PER_SEC))
 
-extern struct timespec xtime;
-extern struct timespec wall_to_monotonic;
 extern seqlock_t xtime_lock;
 
 extern void read_persistent_clock(struct timespec *ts);
@@ -110,7 +124,8 @@ extern int timekeeping_suspended;
 
 unsigned long get_seconds(void);
 struct timespec current_kernel_time(void);
-struct timespec __current_kernel_time(void); /* does not hold xtime_lock */
+struct timespec __current_kernel_time(void); /* does not take xtime_lock */
+struct timespec __get_wall_to_monotonic(void); /* does not take xtime_lock */
 struct timespec get_monotonic_coarse(void);
 
 #define CURRENT_TIME           (current_kernel_time())