Re: [PATCH net-next] net: skbuff: Skip early return in skb_unref when debugging

Florian Westphal
2024-07-30T10:50:31Z

Paolo Abeni <pabeni@redhat.com> wrote:
> > else if (likely(!refcount_dec_and_test(&skb->users)))
> > return false;
>
> I think one assumption behind CONFIG_DEBUG_NET is that enabling such config
> should not have any measurable impact on performances.

If thats the case why does it exist at all?

I was under impression that entire reason for CONFIG_DEBUG_NET was
to enable more checks for fuzzers and the like, i.e. NOT for production
kernels.