On Tue, Apr 05, 2016 at 04:24:33PM +0200, Miroslav Benes wrote: > On Mon, 4 Apr 2016, Josh Poimboeuf wrote: > > > > I'd add a fake signal facility for sleeping non-migrated tasks. This > > > would accelerate a migration to a new universe. We have it in kgraft for > > > quite some time and it worked out great. See > > > lkml.kernel.org/r/1430739625-4658-9-git-send-email-jsl...@suse.cz which > > > went with Jiri's kgraft-on-klp patch set. See also Oleg's reply as it is > > > important (I changed kgraft implementation according to that). > > > > Ok, I'll look into sending a fake signal to remaining tasks. > > Oh, do not worry about this one. I can prepare a patch once we discuss and > review the rest. I think you have a lot on your plate even now. > > There are several options how to do it. I think it would be nice not send > a fake signal immediately. So we can... > > 1. do it after some time of waiting, or > > 2. we can have a knob in sysfs for an admin to send a fake signal if he > does not want to wait anymore, or > > 3. (and this is crazy one) we can trace the progress of a migration and > when there is none for several iterations we can send a signal
Ok, thanks, I'll skip it for now. We do need to think about the options and I do have a full plate already. I might also procrastinate with the patch module removal patch, since that's another separate piece which might need more discussion. -- Josh
