linux-kernel - Re: [PATCH net-next 2/2] net: exit busy loop when another process is runnable

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Message-ID: <20140903093605.GD4783@worktop.ger.corp.intel.com>
Date:	Wed, 3 Sep 2014 11:36:05 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jason Wang <jasowang@...hat.com>
Cc:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Mike Galbraith <umgwanakikbuti@...il.com>, davem@...emloft.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH net-next 2/2] net: exit busy loop when another process is
 runnable

On Wed, Sep 03, 2014 at 03:33:23PM +0800, Jason Wang wrote:
> A new issue is for virt users. I implement busy polling for virtio-net
> but we don't want one vcpu monopoly the cpu if there's some tasks on
> other vcpus. We may need some hint from host to guest to let it exit the
> loop if needed.

Aw god.. virt nonsense is wrecking things again.
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