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* sptests/spcpucounter01: Adjust testSebastian Huber2014-02-241-7/+17
| | | | | Adjust test to work with clock driver based CPU counters. They have a period equal to the clock tick interval.
* score: Add CPU counter supportSebastian Huber2014-02-141-0/+15
Add a CPU counter interface to allow access to a free-running counter. It is useful to measure short time intervals. This can be used for example to enable profiling of critical low-level functions. Add two busy wait functions rtems_counter_delay_ticks() and rtems_counter_delay_nanoseconds() implemented via the CPU counter.