On 21/08/18 09:38, Juri Lelli wrote: > On 21/08/18 00:45, Tim Blechmann wrote: > > [...] > > > apart from that, i'm only missing two features: > > > > * using SCHED_DEADLINE from user applications is kind of a showstopper > > for me > > Right. Would you be up for continuing experimenting with DEADLINE (while > we get our heads around removing this constraint) by - ugly hack warning > - removing the check at > > https://elixir.bootlin.com/linux/latest/source/kernel/sched/core.c#L4216 > > ? > > I guess it would be good if you could provide even more feedback than > you already did, so that we can plan ahead what needs fixing/changing or > implementing. > > BTW, thanks a lot already for this discussion! :-) > > > * a nicer glibc wrapper, that allows me to use pthreads rather than > > using `syscall`: it's all pretty easy to obtain the `tid` for a calling > > thread (gettid), but it seems to be impossible to obtain the `tid` from > > `pthread_t` without some hacks which are way too dirty to share in > > public ... > > Indeed. We have been basically relying on > > https://github.com/scheduler-tools/rt-app/tree/master/libdl > > so far. But, I guess it's time - it has been time for a while - that we > reach glibc guys and try to understand why this is not yet all in the > standard libraries. FYI, I added both points to the list of known issues. Feel free to add details. https://github.com/jlelli/linux/issues Best, - Juri
