Re: [PATCH 1/2] drm/ras: Introduce the DRM RAS infrastructure over generic netlink

[Jakub Kicinski <kuba@kernel.org>]

On Thu, 6 Nov 2025 08:30:37 -0500 Rodrigo Vivi wrote:
> > If you're using Fedora or another good distro ynl CLI is packaged (for
> > Fedora in kernel-tools). The in-tree syntax is a bit verbose.  
> 
> I didn't know this tool was getting package with the kernel-tools
> I thought it was only helping for debug during the development.
> 
> Now I'm even wondering if we really need to code a user-space tool
> for this drm-ras, or simply recommending the kernel-tools/ynl as
> the official consumer of this API.

Right, depends on the intended use of the API. In many cases,
especially for configuration interfaces we no longer write separate 
CLI tools. But for certain things typing in the JSON gets a bit
tedious, and other cases need some sort of summarization if the kernel
output is too verbose. So YMMV.

> > Separate handling of -EMSGSIZE and returning skb->len is not necessary
> > as of a few releases ago. Just return ret; core will do the right thing
> > if ret == -EMSGSIZE and skb->len != 0  
> 
> Any good modern example that I could get the right inspiration from?

It's a moving target but:

net/core/netdev-genl.c
net/psp/psp_nl.c