* Daniel Walker <[email protected]> wrote:
> > But, as PI matures, it seems to be more and more acceptable.
>
> I read an article on priority ceiling as another method of doing
> this. Priority ceiling doesn't seem better, but at the same time I
> can't imagine how you'd implement it in Linux, or not in a straight
> forward way .
it's already implemented and can be done in userspace: userspace can do
it by doing a sys_setscheduler() call when entering the critical
section, and another one when exiting it. (PI is obviously faster
because there the futex fastpath can be pure-userspace.)
Ingo
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