Messages in this thread | | | Date | Fri, 7 Jul 2017 12:25:28 +0200 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH] cpu_pm: replace raw_notifier to atomic_notifier |
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On 2017-07-06 16:47:46 [+0800], Alex Shi wrote: > This patch replace a rwlock and raw notifier by atomic notifier which + is > protected by spin_lock and rcu. … > Sebastian suggested using atomic_notifier instead of rwlock, which is not > only removing the sleeping in idle, but also getting better latency > improvement.
Did you measure this / have numbers or did you write this because this is what RCU does in general?
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Sebastian
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