diff options
Diffstat (limited to 'rtemsbsd/rtems/rtems-kernel-init.c')
| -rw-r--r-- | rtemsbsd/rtems/rtems-kernel-init.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/rtemsbsd/rtems/rtems-kernel-init.c b/rtemsbsd/rtems/rtems-kernel-init.c index 846ca1f1..ac03fedf 100644 --- a/rtemsbsd/rtems/rtems-kernel-init.c +++ b/rtemsbsd/rtems/rtems-kernel-init.c @@ -85,6 +85,7 @@ void mi_startup(void); int hz; int tick; +volatile int ticks; sbintime_t tick_sbt; struct bintime bt_timethreshold; struct bintime bt_tickthreshold; @@ -105,22 +106,21 @@ SYSCTL_INT(_kern_smp, OID_AUTO, maxid, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_INT(_kern_smp, OID_AUTO, maxcpus, CTLFLAG_RD|CTLFLAG_CAPRD, &maxid_maxcpus, 0, "Max number of CPUs that the system was compiled for."); -#undef _bsd_ticks - -RTEMS_STATIC_ASSERT(sizeof(int) == sizeof(int32_t), ticks); - -volatile uint32_t _Watchdog_Ticks_since_boot; - -extern volatile int32_t _bsd_ticks - __attribute__ ((__alias__("_Watchdog_Ticks_since_boot"))); - rtems_status_code rtems_bsd_initialize(void) { static const char name[] = "TIME"; rtems_status_code sc; + int tps; + + /* + * Limit the libbsd ticks per second to 100Hz. This helps to reduce + * the processor load on low end targets which use 1000Hz for the RTEMS + * clock tick. + */ + tps = (int)rtems_clock_get_ticks_per_second(); + hz = MIN(100, tps); - hz = (int) rtems_clock_get_ticks_per_second(); tick = 1000000 / hz; tick_sbt = SBT_1S / hz; FREQ2BT(hz, &tc_tick_bt); |