Minimum timing resolution in Ubuntu/Linaro on the PandaBoard ES

[John Stultz]

On Tue, 2012-02-07 at 21:21 -0800, Dmitry Antipov wrote:
> BTW, I have no ideas why clock_getres(CLOCK_REALTIME,...) returns {0, 1}
> regardless of underlying clock source. I expect {0, 30517} for 32K timer
> and {0, 26} for MPU timer.

Yea. I had proposed to export the underlying clocksource's resolution
via clock_getres, but it was argued against. The concern is that
applications might not expect clock_getres to change while the
application is running.  Between any clock_getres() call and a time
read, the clocksources could change.

But if someone has a different reading of the posix spec, it might be
good to revisit this.

thanks
-john