On Wednesday, September 10, 2014 12:23:36 AM Tejun Heo wrote: > On Tue, Sep 09, 2014 at 05:16:55PM +0200, Michal Hocko wrote: > > But OOM killer doesn't kill kernel threads as they do not own any > > memory. So the check should be safe, no? > > Even for userland tasks, try_to_freeze() can currently be anywhere in > the kernel. The frequently used ones are few but there are some odd > ones out, and, again, there's nothing enforcing any structure on > try_to_freeze() usage. The other thing is that we may do quite a bit > during exiting including allocating memory. Are those safe for system > PM? Rafael, what exactly are the rules for PM? What shouldn't > change?
We can't make any assumptions regarding the availability of any devices. That is, whatever can end up in device access may potentially fail. Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
