On 02/27/2018 11:33 AM, Sebastian Andrzej Siewior wrote:
On 2018-02-27 11:08:56 [-0600], Gary R Hook wrote:
That issue remains unclear to me: Are probes of PCI devices guaranteed to be
serialized? Observations on my CCPs says that they occur in order, but I
don't know for certain that serialization is guaranteed.
Is there a definitive statement on this somewhere that I just don't know
about?
So the question if a driver can probe two devices simultaneously. I'm
not sure. We have PROBE_PREFER_ASYNCHRONOUS which defers the probe to
worker. However I have no idea if two of those worker can run at the
same time.
I think a mutex would be just fine; I got this wrong, clearly. Let me work
up a patch using a mutex.
I've sent one. Why not just ack it and be done with it?
Gary
Sebastian
Sorry, too much chaos right now. Of course.
