> On 2013/2/5 15:22, Kirill Tkhai wrote: > >>> Suppose we have a large number of cpus(say 4096), with the last one running >>> a low-priority task on it. Is it possible with this patch we will never >>> reach >>> the last cpu in case that previous cpu has complete the pulled task? >> >> Yes. But this patch is about several pushable tasks on the same cpu. >> >> Kirill > > Maybe I haven't make myself understood, but in that case, there will be a > higher-priority > task in the runqueue of the pushing cpu, and a lower-priority task running in > the last cpu > which could not be preempt by push_rt_task(), I don't think it's acceptable.
Sure, I tried to prevent the fact of call of this function with locks of spinlocks etc. It may be useful on system like 2 CPU, but it's not necessary for large systems. I'm not persist in this. Kirill > > Hans > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
