On Thu, Jun 20, 2024 at 12:18:37PM -0500, Andrew Halaney wrote: > Acked-by: Andrew Halaney <ahalaney@xxxxxxxxxx> > Tested-by: Andrew Halaney <ahalaney@xxxxxxxxxx> > > This survived a bunch of tests that normally would cause some lockups > etc in PREEMPT_VOLUNTARY systems. I can see that the nbcon thread successfully > migrated NUMA nodes etc during periods of overwhelming the console backlog > successfully, which without this would not work prior. > > Thanks! I'm going to second Andrew's observed results here. With the original reproducer of calling LTP pty03 && pty06 in a while loop, plus invoking stress-ng with --timeout 60000s && --numa 64, there were no problems with the nbcon thread migrating NUMA nodes and no panic(s) with kernel.softlockup_panic = 1 This was observed on an nproc == 128 machine. Thanks! :-) Acked-by: Derek Barbosa <debarbos@xxxxxxxxxx> Tested-by: Derek Barbosa <debarbos@xxxxxxxxxx>
