On Fri 2023-02-24 08:50:00, Josh Poimboeuf wrote: > There have been reports [1][2] of live patches failing to complete > within a reasonable amount of time due to CPU-bound kthreads. > > Fix it by patching tasks in cond_resched(). > > There are four different flavors of cond_resched(), depending on the > kernel configuration. Hook into all of them. > > A more elegant solution might be to use a preempt notifier. However, > non-ORC unwinders can't unwind a preempted task reliably. > > [1] https://lore.kernel.org/lkml/20220507174628.2086373-1-song@xxxxxxxxxx/ > [2] https://lkml.kernel.org/lkml/20230120-vhost-klp-switching-v1-0-7c2b65519c43@xxxxxxxxxx > > Tested-by: Seth Forshee (DigitalOcean) <sforshee@xxxxxxxxxx> > Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> > Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Just for record, I have double checked the changes against v2 and everything looks good to me. Best Regards, Petr
