Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] How far to go with eBPF

Steven Rostedt <[email protected]> Thu, 16 Jun 2022 15:08:45 -0400
Newsgroups org.linuxfoundation.lists.ksummit-discuss,dev.linux.lists.ksummit
Message-ID <[email protected]>
On Thu, 16 Jun 2022 14:25:44 -0400
James Bottomley <[email protected]> wrote:

> Not if it's managed correctly.  One method could simply be to not care
> but be careful.  After all, lots of companies still manage to produce
> proprietary modules even with us actively trying to break the API. 
> Either it's not as difficult as we think or API changes are easier to
> cope with than we assume.

All I read from this is that eBPF is the new way that proprietary modules
can have their stable API.

The problem I have here is that eBPF is becoming extremely invasive. It is
now hooking to any function in the kernel that isn't marked notrace. If
there's not a clear border on what is considered non-stable now, we will be
fighting with those that say "hey this broke my bpf program, revert it
please" for a long time coming.

-- Steve
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