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0ddd3e7d07
The smt_snooze_delay logic changed a bit when the idle loops were consolidated. A value of 0 used to mean we always polled, now it means we always sleep. Instead of restoring the old behaviour, lets put a reasonable default in smt_snooze_delay. This means we spin for a bit (in case an external interrupt comes in) and then sleep. Also the pseries dedicated idle loop currently does not cede both threads in an SMT pair. The hypervisor wants us to call in so it can power manage, so lets do that. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org> |
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