Re: [PATCH bpf-next v2 2/5] bpftool: Make probes which emit dmesg warnings optional

From: Alexei Starovoitov
Date: Fri Feb 21 2020 - 17:44:39 EST

On Fri, Feb 21, 2020 at 11:28:05AM +0000, Quentin Monnet wrote:
> "trace" sounds too generic. If filters are applied again to prog and map
> types in the future (as you had in v1), this would catch tracepoint and
> raw_tracepoint program types and stack_trace map type. Or if new helpers
> with "trace" in their name are added, we skip them too. Can we use something
> more specific, probably "trace_printk"?


> Thanks for the patch! While I understand you want to keep the changes you
> have done to use regex, I do not really think they bring much in this
> version of the patch. As we only want to filter out two specific helpers, it
> seems to me that it would be much simpler to just compare helper names
> instead of introducing regular expressions that are not used otherwise. What
> do you think?

I was thinking the same.
Or filter by specific integer id of the helper.