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Date: Wed, 11 Mar 2015 13:16:31 +0800
From: Fam Zheng <famz@redhat.com>
Message-ID: <20150311051631.GD1437@ad.nay.redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v2] block/null: Latency simulation by
 adding new option "latency_ns"
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To: Eric Blake <eblake@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>

On Fri, 03/06 10:14, Eric Blake wrote:
> On 03/04/2015 06:32 PM, Fam Zheng wrote:
> > Aio context switch should just work because the requests will be
> > drained, so the scheduled timer(s) on the old context will be freed.
> > 
> > Signed-off-by: Fam Zheng <famz@redhat.com>
> > 
> > ---
> > v2: Check for negative value; add sleep in null-co://. [Kevin]
> > ---
> >  block/null.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
> >  1 file changed, 50 insertions(+), 5 deletions(-)
> 
> Is it possible to pass this new parameter via QMP?  If so, shouldn't the
> .json file also document it?  And if so, should it be named with '-'
> instead of '_' for use from QMP?

Sure.

Fam