On Wednesday 05 March 2008 00:24, Steven Rostedt wrote: > Sripathi, > > Thanks for reporting this. > > On Tue, 4 Mar 2008, Sripathi Kodi wrote: > > I can recreate the problem easily and can also get a kdump. Please > > let me know if any other information will help in analyzing this. > > Could you try this patch and let me know if it fixes your problem. Steve, this patch seems to solve the problem. Thanks a lot! There seems to be another problem that leads to a system hang. I will report it as soon as I can gather more information about it. Thanks, Sripathi. > > -- Steve > > Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx> > > --- > kernel/sched_rt.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > Index: linux-2.6.24.3-rt3/kernel/sched_rt.c > =================================================================== > --- linux-2.6.24.3-rt3.orig/kernel/sched_rt.c 2008-03-04 > 13:49:53.000000000 -0500 +++ > linux-2.6.24.3-rt3/kernel/sched_rt.c 2008-03-04 13:51:27.000000000 > -0500 @@ -840,9 +840,11 @@ static void prio_changed_rt(struct rq *r > pull_rt_task(rq); > /* > * If there's a higher priority task waiting to run > - * then reschedule. > + * then reschedule. Note, the above pull_rt_task > + * can release the rq lock and p could migrate. > + * Only reschedule if p is still on the same runqueue. > */ > - if (p->prio > rq->rt.highest_prio) > + if (p->prio > rq->rt.highest_prio && task_rq(p) == rq) > resched_task(p); > #else > /* For UP simply resched on drop of prio */ -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
