[PATCH bpf-next] selftests/bpf: trace_helpers.c: optimize kallsyms cache

[Rong Tao]

Thanks for your advise, you are right, i just submit v2 [0].

I just found that, because of the modified patch, your email address was not
obtained through scripts/get_maintainer.pl, so the v2 [0] email was not sent
to you, sorry.

Rong Tao,
Good day.

[0] v2: https://lore.kernel.org/lkml/tencent_B655EE5E5D463110D70CD2846AB3262EED09@qq.com/