[RFC] Some new generic device features.

Maxim Zhuravlev thIOretic at FreeBSD.org
Fri Feb 1 06:49:19 PST 2008


2008/1/31, Hans Petter Selasky <hselasky at c2i.net>:
> Hi,
>
> Some general comments:
>
> How does it handle mutexes?

By now mutexes are used by io subsystem:
All input/output requests (iors) and queues of iors are guarded by spin mutexes.
As for devices, their NewBus sided structures will be guarded by
(spin?) mutexes.

> Does it support non-giant enabled input drivers?

I don't really get what you mean. Did that answer about NewBus sided
structures  + paralleled/serialized ior processing clarify anything?

--
- Maxim Zhuravlev


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