On Sat, 2013-04-06 at 18:45 +0200, Frederic Weisbecker wrote: > check_preempt_wakeup() of fair class needs an uptodate sched clock > value to update runtime stats of the current task. > > When a task is woken up, activate_task() is usually called right > before > ttwu_do_wakeup() unless the task is still in the runqueue. In this > case we need to update the rq clock manually in case the CPU runs > tickless because ttwu_do_wakeup() calls check_preempt_wakeup().
again, same story.. I think the entire nohz specific clock update stuff is completely broken and you're finding sites that are simply missing clock updates. -- 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/
