>> So I think we can reduce it to just the one rwsem (with recursion) if we
>> shoot CPU_POST_DEAD in the head.
>
> Here's the first bullet. Stressing my box here with Steve's hotplug
> script seems to work fine.
>
> Tony, any objections?
what was this comment referring to:
/* intentionally ignoring frozen here */
After you move the cmci_rediscover() call, it is now in a place where we are
no longer ignoring frozen (i.e. the old placement did the rediscover even if the
CPU_TASKS_FROZEN bit was set - with the new placement we will skip rediscovery.
So we were working around some interaction between cpu hotplug and frozen.
Do we no longer need to do that?
-Tony
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