Messages in this thread | | | Date | Thu, 7 Aug 2003 09:49:43 +0200 (MEST) | From | Javier Achirica <> | Subject | Re: [PATCH] airo driver: fix races, oops, etc.. |
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On 5 Aug 2003, Benjamin Herrenschmidt wrote:
> On Tue, 2003-08-05 at 10:53, Javier Achirica wrote: > > I've integrated this patch in my code. I've done a major change: Instead > > of using schedule_delayed_work(), I create a new workqueue and use > > queue_work() on that queue. As all tasks sleep in the same lock, I can > > queue them there and make them sleep instead of requeueing them. > > > > I haven't sent them to Jeff yet, as I want to do more testing. If you want > > to help testing them, please tell me. > > Well... creating a work queue means you create one thread per CPU, that > sucks a bit don't think ? Maybe using a single thread for the driver > with your own queuing primitives...
I've been studying the problem for a while and I've implemented a solution using a single kernel thread and a wait queue for synchronization. I've tested it and looks like it works fine. It can be used both in 2.4 and 2.6 kernels. Before submitting a patch with it I'd like someone with experience in this kind of code to take a look at it just in case I'm doing something dumb. Jeff? :-)
Javier Achirica
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