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Re: [Qemu-devel] [PATCH 1/5] qom: adopt rwlock to protect accessing dev

From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH 1/5] qom: adopt rwlock to protect accessing dev from removing it
Date: Thu, 26 Jul 2012 16:00:52 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1

On 07/26/2012 03:56 PM, liu ping fan wrote:
> On Wed, Jul 25, 2012 at 5:08 PM, Paolo Bonzini <address@hidden> wrote:
>> Il 25/07/2012 05:31, Liu Ping Fan ha scritto:
>>> From: Liu Ping Fan <address@hidden>
>>> rwlock:
>>>   qemu_device_tree_mutex
>>> rd side:
>>>   --device_del(destruction of device will be postphoned until unplug
>>>     ack from guest),
>>>   --pci hot-unplug
>>>   --iteration (qdev_reset_all)
>>> wr side:
>>>   --device_add
>> This is not defined anywhere, is a piece missing in the patch?
> Oh, yes, I miss the patch.  In that patch, these rwlock are just place holder.
> I see there is already try to implement rwlock for qemu.
>     http://lists.gnu.org/archive/html/qemu-devel/2011-10/msg00192.html
> and is it the time for introduce rwlock for qemu?

>From the description above, I don't see why it can't be a mutex.

error compiling committee.c: too many arguments to function

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