Re: 2.6.13-rt6, ktimer subsystem

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Thomas Gleixner wrote:
~
- The posix timer tests run all successful, except the broken 2timertest
which fails on any other HRT kernel too and the sleep to long for real
timers when the clock is set backwards, which is easily solvable
(working on that).

Your mileage seems to differ from mine.  Here is what I get from ./do_test:
The following tests failed:
clock_nanosleeptest
abs_timer_test
4-1
clock_settimetest
clock_gettimetest2
2timer_test


Hmm. Except for the 2timer_test, where my source seems to be broken it
works here.

The latest support source is in the CVS tree on the HRT site. It is no longer a patch...


Then, on the second run, it crashed in an attempt to get the monotonic clock (a divide error). System is a dual PIII, 800Mhz. This from the rt11 patch.


Hmm, divide error. I had one of those in the early phase due to some
strange 64/32 truncation problem, which was caused by nested
inline/macros. After unmingling the problem went away.

I suspect that the 64/32 div resulted in a >32 bit result which is a fault. This was deep in monotonic_clock. I would rather change to clock_monotonic (i.e. xtime+offset+walltomonotonic) and work that code patch. monotonic_clock is just the wrong thing for this work.

tglx


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--
George Anzinger   [email protected]
HRT (High-res-timers):  http://sourceforge.net/projects/high-res-timers/
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