On Tue, May 26, 2020 at 05:40:06PM +0100, Valentin Schneider wrote: > > Change the task_tick_numa() check to exclude kernel threads in general, > > as it doesn't make sense to attempt ot balance for kthreads anyway. > > > > Does it? (this isn't a rethorical question) > > Suppose a given kthread ends up doing more accesses to some pages > (via use_mm()) than the other threads that access them, wouldn't it make > sense to take that into account when it comes to NUMA balancing?
Well, task_tick_numa() tries and farm off a bunch of actual work to task_work_add(), and there's so very little userspace for a kernel thread to return to... :-)
