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SubjectQuestion on migrate_disabe/enable()
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Hello Peterz, tglx

I have some questions about migrate_disabe/enable(), in the past migrate_disabe/enable() is replaced by preempt_disable/enable() in no RT system.

And now migrate_disabe/enable() has its own implementation, I want to know in migrate_disabe/enable() critical area is blocking allowed?

If allowed, There's a blockage in migrate_disabe/enable() critical area, and this time if CPU going offline,offline time will be longer. Is this normal phenomenon?

Thanks
Qiang















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