Re: [PATCH mlx5-next v7 0/4] Dynamically assign MSI-X vectors count

Bjorn Helgaas
2021-03-26T19:37:29Z

On Fri, Mar 26, 2021 at 11:50:44AM -0700, Alexander Duyck wrote:

> I almost wonder if it wouldn't make sense to just partition this up to
> handle flexible resources in the future. Maybe something like having
> the directory setup such that you have "sriov_resources/msix/" and
> then you could have individual files with one for the total and the
> rest with the VF BDF naming scheme. Then if we have to, we could add
> other subdirectories in the future to handle things like queues in the
> future.

Subdirectories would be nice, but Greg KH said earlier in a different
context that there's an issue with them [1]. He went on to say tools
like udev would miss uevents for the subdirs [2].

I don't know whether that's really a problem in this case -- it
doesn't seem like we would care about uevents for files that do MSI-X
vector assignment.

[1] https://lore.kernel.org/linux-pci/20191121211017.GA854512@kroah.com/
[2] https://lore.kernel.org/linux-pci/20191124170207.GA2267252@kroah.com/