Re: [Qemu-devel] [PATCH 2/7] migration: Add counters of updating the dirty bitmap

[Juan Quintela <quintela@redhat.com>]

Gonglei <arei.gonglei@huawei.com> wrote:
> On 2014/3/6 0:18, Juan Quintela wrote:
>
>> "Gonglei (Arei)" <arei.gonglei@huawei.com> wrote:
>>> Add counters to log the times of updating the dirty bitmap.
>>>
>>> Signed-off-by: ChenLiang <chenliang88@huawei.com>
>>> Signed-off-by: Gonglei <arei.gonglei@huawei.com>
>> 
>> As told by Eric, I am with this change, but can we move the code to the
>> same place that the rest of the statistics?
>> 
>> Thanks, Juan.
>
> OK, I'm pleasure to do it. What's your plan?

Instead of a local variable, look at includemigration/state/migration.h

inside MigrationState there are variables like setup_time.

You can add your variable there.  Interesting bits is that you need to
add it also to:

qapi-schema.json: MigrationInfo (looks for @setup-time),
qmp-commands.hx: look for setup-time
hmp.c: look again for setup_time
migration.c: look for setup_time inside qemu_qeery_migrate()

That are the places to add something to migration stats and that appears
everywhere.

Thanks, Juan.