Re: [PATCH] multifd: Fix the number of channels ready

[Fabiano Rosas]

Juan Quintela <quintela@redhat.com> writes:

> Fabiano Rosas <farosas@suse.de> wrote:
>> Juan Quintela <quintela@redhat.com> writes:
>>
>>> We don't wait in the sem when we are doing a sync_main.  Make it wait
>>> there.  To make things clearer, we mark the channel ready at the
>>> begining of the thread loop.
>>
>> So in other words we're estabilishing that "channel ready" means ready
>> to send, regardless of having sent the sync packet. Is that it?
>
> Yeap.
>
> There was a bug (from the beggining) that made the counter always get
> up and up.  This fixes it.
>
> It was always supposed to work this way.

Ah, great. I'm proposing a multifd variant without the sync packet in my
fixed-ram series and moving the channels_ready to the top of the loop
means I can stop issuing an extra qemu_sem_post(&p->sem) just to skip
the sync packet.