Re: [PATCH bpf-next v4] selftests/bpf: Add LPM trie microbenchmarks

On Wed, Aug 27, 2025 at 12:50 AM Alexei Starovoitov alexei.starovoitov@gmail.com wrote:

On Tue, Aug 26, 2025 at 6:12 AM Matt Fleming matt@readmodwrite.com wrote:

...

+static int baseline(__u32 index, __u32 *unused) +{

•   struct trie_key key;
  

•   __s64 blackbox;
  

•   generate_key(&key);
  

•   /* Avoid compiler optimizing out the modulo */
  

•   barrier_var(blackbox);
  

•   blackbox = READ_ONCE(key.data);
  

Overall looks good, but gcc-bpf found an actual issue.

Thanks. I'll submit a v5 with a fix shortly.