The realtime preemption mini-summit [LWN.net]

The realtime preemption mini-summit

Posted Sep 30, 2009 8:05 UTC (Wed) by michaeljt (subscriber, #39183)
In reply to: The realtime preemption mini-summit by simlo
Parent article: The realtime preemption mini-summit

> Or you could say that writers don't boost the readers but readers can boost the single writer. That way you can't use rwlocks in real time tasks and that would not be a problem in most cases.
So to return to my previous question, this would simply mean not trying to get it "right" for this API and clearly write that on the box.

> But the kernel would need a lot of review to be sure and therefore I fully understand the current solution in the preemt RT patche.
Of course I was naively thinking that the API user would be aware of what locking they are using, but that won't hold if they are doing the locking implicitly through other APIs.

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