* Benjamin Herrenschmidt (benh@xxxxxxxxxxxxxxxxxxx) wrote: > On Tue, 2013-07-23 at 07:33 -0500, Robert Jennings wrote: > > When an associativity level change is found for one thread, the > > siblings threads need to be updated as well. This is done today > > for PRRN in stage_topology_update() but is missing for VPHN in > > update_cpu_associativity_changes_mask(). > > > > All threads should be updated to move to the new node. Without this > > patch, a single thread may be flagged for a topology change, leaving it > > in a different node from its siblings, which is incorrect. This causes > > problems for the scheduler where overlapping scheduler groups are created > > and a loop is formed in those groups. > > > > Reported-by: Jan Stancek <jstancek@xxxxxxxxxx> > > Signed-off-by: Robert Jennings <rcj@xxxxxxxxxxxxxxxxxx> > > Cc: <stable@xxxxxxxxxxxxxxx> > > Patch breaks the UP build ... > > Cheers, > Ben. Very sorry about that, a fix is on the way. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html