Re: [PATCH] Make highly niced processes run only when idle

Robert Love
2001-12-10T00:32:04Z

On Sun, 2001-12-09 at 18:46, Benjamin LaHaise wrote:

> Actually, yes: in entry.S the ret_from_syscall path which calls schedule
> can be changed to pass a parameter indicating it is returning to userspace
> afterwards which would let schedule know the bump is not needed.

Hmm, what if we only boosted it based on something like this:

if (p->policy == SCHED_IDLE) {
weight = p->counter;
if (p->lock_depth >= 0 || signal_pending(p))
/* boost somehow ... */
}

(I'm writing the patch now :>)

Would it still make sense to only boost it in kernel space ?

Robert Love