On Thu, Apr 06, 2017 at 10:01:39AM +0200, Ingo Molnar wrote:
> I.e. just have a counter and these two APIs:
>
> static inline void migrate_disable(void)
> {
> current->migration_disabled++;
> }
>
> ...
>
> static inline void migrate_enable(void)
> {
> current->migration_disabled--;
> }
>
> ... and make sure the scheduler migration code plus the CPU hotplug code
> considers
> the counter.
>
> Would this work, and would this be the simplest all around solution?
If you want to add expensive bits to hot paths like wakeups ... :/
