Re: [PATCH v2 7/7] tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN

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Hi Steve,

On Sat, Feb 11, 2023 at 8:07 PM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> On Sun, 12 Feb 2023 11:38:52 +0800
> Yafang Shao <laoar.shao@xxxxxxxxx> wrote:
>
> > > Actually, there are cases that this needs to be a number, as b3bc8547d3be6
> > > ("tracing: Have TRACE_DEFINE_ENUM affect trace event types as well") made
> > > it update fields as well as the printk fmt.
> > >
> >
> > It seems that TRACE_DEFINE_ENUM(TASK_COMM_LEN) in the trace events
> > header files would be a better fix.
>
> NACK! I much prefer the proper fix that adds the length.

Can we just have both enum and macro at the same time?
I guess the enum would fill the BTF and the macro would provide
backward compatibility.

Thanks,
Namhyung



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