RIOT-OS/RIOT — pull request #1409 by LudwigOrtmann (2014-07-13 05:43:56+00:00)
Title: Hwtimer spin barrier

Introduce HWTIMER_SPIN_BARRIER (API change):
Boards need to define HWTIMER_SPIN_BARRIER that is used to decide
whether it makes sense to set a timer and yield or call hwtimer_spin
instead.
Used by `core/hwtimer.c` and `sys/vtimer/vtimer.c`.

Values are based on the current implementation, suggestions welcome.

Based on #1407