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.
