Messages in this thread |  | | | Date | Wed, 06 Feb 2008 10:04:46 -0800 | | From | Max Krasnyanskiy <> | | Subject | Re: RT scheduler config, suggestions and questions | |
Peter Zijlstra wrote:
> On Wed, 2008-02-06 at 07:36 +0100, Peter Zijlstra wrote:
>
>>> btw I can see "watchdog" being very useful to catch hard-RT tasks that exceed the deadline.
>>> But's it gotta be per thread.
>> It is.
>>
>>> Single setting per user is not enough. Unless a use has a single RT task.
>> ?
>
> Ah, its starting to make sense, you want it configurable per thread, not
> process wide. Yes, I see how that is useful, just no idea how to expose
> that to user-space atm.
Yes. That's what I meant. I don't think overall per process setting is that useful.
Per thread though would be useful.
How to expose that to the user-space ? The best option in my opinion is to extend
struct sched_param. That way both sched_setparam() and pthread_attr_setschedparam()
can be used to set new attributes and it's backwards compatible.
Something like:
struct sched_param {
...
unsigned int sched_rt_limit;
unsigned int sched_rt_...;
};
Max
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