Re: [patch] drivers: wait for threaded probes between initcall levels

Xavier Bestel
2006-10-30T15:01:04Z

On Mon, 2006-10-30 at 15:38 +0100, Arjan van de Ven wrote:

> how much of this complexity goes away if you consider the
> scanning/probing as a series of "work elements", and you end up with a
> queue of work elements that threads can pull work off one at a time (so
> that if one element blocks the others just continue to flow). If you
> then find, say, a new PCI bus you just put another work element to
> process it at the end of the queue, or you process it synchronously. Etc
> etc.
>
> All you need to scale then is the number of worker threads on the
> system, which should be relatively easy to size....
> (check every X miliseconds if there are more than X outstanding work
> elements, if there are, spawn one new worker thread if the total number
> of worker threads is less than the system wide max. Worker threads die
> if they have nothing to do for more than Y miliseconds)

Instead of checking every X ms, just check at each job insertion.

Xav