modules/spl/spl-time.c

   1 #include <sys/sysmacros.h>
   2 #include <sys/time.h>
   3 #include "config.h"
   4
   5 #ifdef DEBUG_SUBSYSTEM
   6 #undef DEBUG_SUBSYSTEM
   7 #endif
   8
   9 #define DEBUG_SUBSYSTEM S_TIME
  10
  11 void
  12 __gethrestime(timestruc_t *ts)
  13 {
  14         getnstimeofday((struct timespec *)ts);
  15 }
  16 EXPORT_SYMBOL(__gethrestime);
  17
  18 int
  19 __clock_gettime(clock_type_t type, timespec_t *tp)
  20 {
  21         /* Only support CLOCK_REALTIME+__CLOCK_REALTIME0 for now */
  22         ASSERT((type == CLOCK_REALTIME) || (type == __CLOCK_REALTIME0));
  23
  24         getnstimeofday(tp);
  25         return 0;
  26 }
  27 EXPORT_SYMBOL(__clock_gettime);
  28
  29 /* This function may not be as fast as using monotonic_clock() but it
  30  * should be much more portable, if performance becomes as issue we can
  31  * look at using monotonic_clock() for x86_64 and x86 arches.
  32  */
  33 hrtime_t
  34 __gethrtime(void) {
  35         timespec_t tv;
  36         hrtime_t rc;
  37
  38         do_posix_clock_monotonic_gettime(&tv);
  39         rc = (NSEC_PER_SEC * (hrtime_t)tv.tv_sec) + (hrtime_t)tv.tv_nsec;
  40
  41         return rc;
  42 }
  43 EXPORT_SYMBOL(__gethrtime);