Re: [PATCH v2 1/2] rcu: don't bind offline cpu

From: KOSAKI Motohiro
Date: Thu May 19 2011 - 04:51:14 EST

(2011/05/19 17:34), Peter Zijlstra wrote:
On Thu, 2011-05-19 at 15:06 +0900, KOSAKI Motohiro wrote:

The right way is, explicit two phase cpu bindings (1) bind boot
(or any other online) cpu at CPU_UP_PREPARE (2) bind correct
target cpu at CPU_ONLINE. This patch does it.

I'm not sure that is in-fact correct. From what I understood, RCU could
have need of this thread before the ONLINE callback and expects it to be
affine at that time.

What was wrong with delaying the wakeup to STARTING?

Grr, I misparsed Paul's mail. I thought he said "Sorry, but this does not work."
to you. But in fact, he said to Young. I have to see and test your patch.

I'm sorry. Please give me a bit time.

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