#ifdef __KERNEL__
/* Parameters used to convert the timespec values: */
-#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
+#define MSEC_PER_SEC 1000L
+#define USEC_PER_SEC 1000000L
+#define NSEC_PER_SEC 1000000000L
+#define NSEC_PER_USEC 1000L
static inline int timespec_equal(struct timespec *a, struct timespec *b)
{
extern void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec);
-/*
- * sub = lhs - rhs, in normalized form
- */
-static inline struct timespec timespec_sub(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;
-}
-
/*
* Returns true if the timespec is norm, false if denorm:
*/
#define timespec_valid(ts) \
(((ts)->tv_sec >= 0) && (((unsigned long) (ts)->tv_nsec) < NSEC_PER_SEC))
+/*
+ * 64-bit nanosec type. Large enough to span 292+ years in nanosecond
+ * resolution. Ought to be enough for a while.
+ */
+typedef s64 nsec_t;
+
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;
struct itimerval;
extern int do_setitimer(int which, struct itimerval *value,
struct itimerval *ovalue);
-extern unsigned int alarm_setitimer(unsigned int seconds);
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
* Returns the scalar nanosecond representation of the timespec
* parameter.
*/
-static inline s64 timespec_to_ns(const struct timespec *ts)
+static inline nsec_t timespec_to_ns(const struct timespec *ts)
{
- return ((s64) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec;
+ return ((nsec_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec;
}
/**
* Returns the scalar nanosecond representation of the timeval
* parameter.
*/
-static inline s64 timeval_to_ns(const struct timeval *tv)
+static inline nsec_t timeval_to_ns(const struct timeval *tv)
{
- return ((s64) tv->tv_sec * NSEC_PER_SEC) +
+ return ((nsec_t) tv->tv_sec * NSEC_PER_SEC) +
tv->tv_usec * NSEC_PER_USEC;
}
*
* Returns the timespec representation of the nsec parameter.
*/
-extern struct timespec ns_to_timespec(const s64 nsec);
+extern struct timespec ns_to_timespec(const nsec_t nsec);
/**
* ns_to_timeval - Convert nanoseconds to timeval
*
* Returns the timeval representation of the nsec parameter.
*/
-extern struct timeval ns_to_timeval(const s64 nsec);
+extern struct timeval ns_to_timeval(const nsec_t 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