On Fri, May 13, 2022 at 10:02 AM Benjamin Tissoires
[off-list ref] wrote:

On Thu, May 12, 2022 at 6:23 AM Alexei Starovoitov
[off-list ref] wrote:

quoted

On Sat, Apr 30, 2022 at 09:12:09AM +0200, Benjamin Tissoires wrote:

quoted

Also, I wonder if we should not have some way to namespace kfuncs.
Ideally, I would like to prevent the usage of those kfuncs outside of
some helpers that I define in HID so I don't have to worry too much
about other trace programs fuzzing and segfaulting the kernel.

That would be a great feature to have. Other folks expressed the same interest.
Just grouping them by prog type is not flexible enough.
It feels kfuncs could be scoped by (prog_type, attach_btf_id or attach_hook) pair.
What are your thoughts?

Scoping by attach_btf_id is very appealing to me (attach_hook less TBH):
I have internal functions I do not want normal users to use, and also
it would also restrict who can call what in the more general case.

However, I don't think I'll put that effort in v5. It is a nice to
have feature IMO, but not really required ATM.

Great. Looking forward to it.