Re: [Patch] restore the RCU callback to defer put_task_struct() Re: Problems with 2.6.17-rt8

Bill Huey
2006-08-10T02:21:59Z

On Thu, Aug 10, 2006 at 12:05:57AM +0200, Esben Nielsen wrote:
> I had a long discussion with Paul McKenney about this. I opposed the patch
> from a latency point of view: Suddenly a high-priority RT task could be
> made into releasing a task_struct. It would be better for latencies to
> defer it to a low priority task.
>
> The conclusion we ended up with was that it is not a job for the RCU
> system, but it ought to be deferred to some other low priority task to
> free the task_struct.

I agree. It's just hack to get it not to crash at this time. It really
should be done in another facility or utilizing another threading context.

bill