On Thu, 2013-01-31 at 18:56 +0400, Kirill Tkhai wrote: > Function next_prio() has been removed and pull_rt_task() is the only > user of pick_next_highest_task_rt() at the moment. > > pull_rt_task is not interested in p->nr_cpus_allowed, its only interest > is the fact that cpu is allowed to execute p. If nr_cpus_allowed == 1, > cpu != task_cpu(p) and cpu is allowed then it means that task p is in > the middle of the migration techniques; the task waits until it is moved > by migration thread. So, lets pull it earlier. > > Signed-off-by: Kirill V Tkhai <[email protected]>
Acked-by: Steven Rostedt <[email protected]> -- Steve > CC: Ingo Molnar <[email protected]> > CC: Peter Zijlstra <[email protected]> > CC: linux-rt-users <[email protected]> > --- > kernel/sched/rt.c | 3 +-- > 1 files changed, 1 insertions(+), 2 deletions(-) > diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c > index 4e8f0f4..9aa2921 100644 > --- a/kernel/sched/rt.c > +++ b/kernel/sched/rt.c > @@ -1427,8 +1427,7 @@ static void put_prev_task_rt(struct rq *rq, struct > task_struct *p) > static int pick_rt_task(struct rq *rq, struct task_struct *p, int cpu) > { > if (!task_running(rq, p) && > - (cpu < 0 || cpumask_test_cpu(cpu, tsk_cpus_allowed(p))) && > - (p->nr_cpus_allowed > 1)) > + cpumask_test_cpu(cpu, tsk_cpus_allowed(p))) > return 1; > return 0; > } -- 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/
