On Wed, Jan 11, 2017 at 11:03:23AM +0100, Borislav Petkov wrote: > On Wed, Jan 11, 2017 at 01:51:56AM -0800, Paul E. McKenney wrote: > > Yes, you could make RCU expedited grace periods go back to using the > > requesting task, and that would allow expedited grace periods to run early > > in the boot process. But that causes problems with signals and the like > > unless you revert a few other patches. The bugzilla is interesting -- > > it looks like ACPI was in some cases doing early-boot grace-period waits > > some time back? > > I think this and https://bugzilla.suse.com/show_bug.cgi?id=1017783 is an > example of a bunch of toshiba schlaptops which cause the issue. So it > looks like ACPI is doing something very early on those which tickles the > issue to happen. > > But this is ACPI - anything can happen! ;-) ;-) ;-) > > I have a limping prototype RCU patch that should avoid this problem. > > > > If all goes well, I will send it out late tomorrow evening, Pacific Time. > > Attach it to the bugzilla too, pls, because the people there trigger the > issue. > > I have the respective(?) SUSE bug and I can ask people there to run it > too. That would be very good! Thinking good thoughts for the ongoing tests... Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
