Re: [Xenomai-core] trunk: xnsched_set_policy seems to set only cprio

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Philippe Gerum wrote:
> Jan Kiszka wrote:
>> Hi,
>>
>> unfortunately I'm forced to switch to other bugs, but I found out a bit
>> more about the issue that pthread_getschedparam doesn't return the
>> correct policy&prio under trunk - at least when called from threads
>> created via pthread_create as SCHED_FIFO:
>>
>> Such threads start with SCHED_OTHER, but then the propagation via
>> do_setsched_event and finally xnsched_set_policy only seems to affect
>> thread.cprio, not bprio. Will see if I can continue debugging this
>> later, but maybe /someone/ already knows what goes wrong...
>>
> 
> With the new scheduler infrastructure, ->bprio tends to be used solely as a
> priority backup area when dealing with PIP; but at the same time, some skins
> still consider it as an always up-to-date location where to find the nominal
> priority of a thread, so this hunk should help in keeping things compatible with
> 2.4.x:

Yes, the posix spec specifically ask that the priority as set by
pthread_setschedparam is returned, and not the boosted priority in case
of PIP.

-- 
                                                 Gilles.