Re: [PATCH for-next 0/2] Host information userspace version

[Gal Pressman <galpress@amazon.com>]

On 21/01/2021 20:35, Jason Gunthorpe wrote:
> On Tue, Jan 19, 2021 at 09:17:14AM +0200, Gal Pressman wrote:
>> On 05/01/2021 12:43, Gal Pressman wrote:
>>> The following two patches add the userspace version to the host
>>> information struct reported to the device, used for debugging and
>>> troubleshooting purposes.
>>>
>>> PR was sent:
>>> https://github.com/linux-rdma/rdma-core/pull/918
>>>
>>> Thanks,
>>> Gal
>>
>> Anything stopping this series from being merged?
> 
> Honestly, I'm not very keen on this
> 
> Why does this have to go through a kernel driver, can't you collect
> OS telemetry some other way?

Hmm, it has to go through rdma-core somehow, what sort of component can
rdma-core interact with to pass such data? The only one I could think of is the
RDMA driver :).

As I said, I get your concern, I was going on and off about this as well, but
the userspace version is a very useful piece of information in the context of a
kernel bypass device. It's just as important as the kernel version.
I agree that this is not the place to pass things like gcc version, but I don't
think that's the case here :).

Do you absolutely hate the idea of passing the userspace version, or are you
worried about what's next to come?
If it's the latter, we don't really have plans to push anything similar anytime
soon, and even if we did, I don't think it should block this series.