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Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu

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From: Vijay Kumar <vijay.ac.kumar@oracle.com>
Date: Thu, 20 Jul 2017 22:36:42 -0500

> I can give a try :). But looks to me one thing that will go wrong is
> irq accounting done in __irq_enter() and rcu_irq_enter().

Actually, the bigger problem is that scheduler_ipi() can raise a
software interrupt, and nothing will invoke it.

It's turning quite ugly to avoid the IRQ overhead, I must admit.
So ignore this for now.

In the longer term a probably cleaner way to do this is to have
a special direct version of scheduler_ipi() that invokes all the
necessary work, even the rebalance softirq, directly rather than
indirectly.

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Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu David Miller <davem@davemloft.net> - 2017-07-20 22:00 +0200
  Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu Vijay Kumar <vijay.ac.kumar@oracle.com> - 2017-07-21 04:50 +0200
    Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu David Miller <davem@davemloft.net> - 2017-07-21 05:00 +0200
      Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu Vijay Kumar <vijay.ac.kumar@oracle.com> - 2017-07-21 05:40 +0200
        Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu David Miller <davem@davemloft.net> - 2017-07-21 05:50 +0200
          Re: [PATCH 0/2] sparc64: Use low latency path to resume idle cpu Vijay Kumar <vijay.ac.kumar@oracle.com> - 2017-07-21 06:20 +0200

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