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-rw-r--r--include/linux/time.h28
1 files changed, 24 insertions, 4 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 0cd696cee99..c05f8bb9a32 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -28,10 +28,13 @@ struct timezone {
#ifdef __KERNEL__
/* Parameters used to convert the timespec values: */
-#define MSEC_PER_SEC 1000L
-#define USEC_PER_SEC 1000000L
-#define NSEC_PER_SEC 1000000000L
-#define NSEC_PER_USEC 1000L
+#define MSEC_PER_SEC 1000L
+#define USEC_PER_MSEC 1000L
+#define NSEC_PER_USEC 1000L
+#define NSEC_PER_MSEC 1000000L
+#define USEC_PER_SEC 1000000L
+#define NSEC_PER_SEC 1000000000L
+#define FSEC_PER_SEC 1000000000000000L
static inline int timespec_equal(struct timespec *a, struct timespec *b)
{
@@ -77,6 +80,8 @@ extern struct timespec xtime;
extern struct timespec wall_to_monotonic;
extern seqlock_t xtime_lock;
+void timekeeping_init(void);
+
static inline unsigned long get_seconds(void)
{
return xtime.tv_sec;
@@ -100,6 +105,7 @@ extern int do_getitimer(int which, struct itimerval *value);
extern void getnstimeofday(struct timespec *tv);
extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
+extern int timekeeping_is_continuous(void);
/**
* timespec_to_ns - Convert timespec to nanoseconds
@@ -142,6 +148,20 @@ extern struct timespec ns_to_timespec(const s64 nsec);
*/
extern struct timeval ns_to_timeval(const s64 nsec);
+/**
+ * timespec_add_ns - Adds nanoseconds to a timespec
+ * @a: pointer to timespec to be incremented
+ * @ns: unsigned nanoseconds value to be added
+ */
+static inline void timespec_add_ns(struct timespec *a, u64 ns)
+{
+ ns += a->tv_nsec;
+ while(unlikely(ns >= NSEC_PER_SEC)) {
+ ns -= NSEC_PER_SEC;
+ a->tv_sec++;
+ }
+ a->tv_nsec = ns;
+}
#endif /* __KERNEL__ */
#define NFDBITS __NFDBITS