tms570 Cortex-R performance counters and some ideas related to RTEMS timekeeping code

[Gedare Bloom]

On Fri, Aug 22, 2014 at 1:45 PM, Joel Sherrill
<joel.sherrill at oarcorp.com> wrote:
>
>
> On August 22, 2014 11:44:11 AM CDT, Pavel Pisa <pisa at cmp.felk.cvut.cz> wrote:
>>Hello Joel,
>>
>>On Friday 22 of August 2014 17:25:24 Joel Sherrill wrote:
>>> Pushed.
>>>
>>> Followups can just be subsequent patches.
>>
>>thanks, you are faster than light ...
>
> Just truing to wrap up things on a Friday. :)
>
>>As for the RTEMS timekeeping code, I can imagine how it could
>>look better. I do not like Clock_driver_nanoseconds_since_last_tick.
>>I am not even sure if it is really used by TOD (i.e. in ticker test
>>seems to print rounded values on our board).
>
> The Classic API get time method used returns TOD in a format with seconds and ticks since the last second. The print in that test only prints seconds. There is a nanoseconds sample which prints at higher granularity.
>
Hi Pavel, you may also be interested in the recent mailing list thread
with subject:

[Bug 2180] New: _TOD_Get_with_nanoseconds() is broken on SMP

Sebastian suggested we adopt FreeBSD mechanisms for our clock drivers.
-Gedare