Re: [RFC PATCH 5/6] implement per-cpu&per-domain state machine call_srcu()

[Lai Jiangshan]

On 03/06/2012 11:32 PM, Peter Zijlstra wrote:
> On Tue, 2012-03-06 at 22:44 +0800, Lai Jiangshan wrote:
>> it is srcu_barrier(), it have to wait all callbacks complete for all
>> cpus since it is per-cpu
>> implementation.
>>
> If you enqueue each callback as a work, flush_workqueue() alone should
> do that. It'll wait for completion of all currently enqueued works but
> ignores new works.

Callbacks are not queued in the workqueue when call_srcu().
They are delivered(queued in the workqueue) after a grace period,
so we need to wait for all are delivered before flush_workqueue().

> 
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