On Tuesday 08 May 2018 at 16:44:51 (+0530), Viresh Kumar wrote: > On 08-05-18, 12:00, Quentin Perret wrote: > > Right, I see your point. Now, with the current implementation, why should > > we randomly force a CPU to manage the kthread of another ? IIUC deadline > > should assign the kthreads to CPUs depending on the state of the system > > when the task is created. So, from one boot to another, you could > > theoretically end up with varying configurations, and varying power/perf > > numbers. > > Yeah, if it is fixed at boot then there is no good reason to push it > to any other CPU. I agree. >
To be fair, I think that DL tasks _can_ migrate, but only in special conditions (hotplug, or if a DL task wakes up when another DL task is running and things like that IIRC) but that probably doesn't matter much for our discussion here. Thanks, Quentin
