On Tue, Mar 04, 2014 at 07:25:46PM +0400, Kirill Tkhai wrote: > The problems: > > 1)We check for rt_nr_running before call of put_prev_task(). > If previous task is RT, its rt_rq may become throttled > and dequeued after this call. > > In case of p is from rt->rq this just causes picking a task > from throttled queue, but in case of its rt_rq is child > we are guaranteed catch BUG_ON. > > 2)The same with deadline class. The only difference we operate > on only dl_rq. > > This patch fix all above and it adds a small skip in DL update > like we've already done for RT class: > > if (unlikely((s64)delta_exec <= 0)) > return; > > This will optimize sequential update_curr_dl() calls a little. >
Ah indeed, good catch that. Thanks! -- 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/
