> > softlockup: remove get_online_cpus() which doesn't help here. > > > > The get_online_cpus() protection seems to be bogus in > > kernel/softlockup.c as cpu cached in check_cpu can go offline once > > we do a put_online_cpus(). > > > > This can also cause deadlock during a cpu offline as follows: i'm wondering, what's the proper CPU-hotplug safe sequence here then? I'm picking a CPU number from cpu_online_map, and that CPU could go away while i'm still using it, right? What's saving us here? Ingo _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
