mainline inclusion
from mainline-5.16-rc1
commit 4f2511e1
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f2511e1990985103929ab799fb3ebca81969b77

-------------------------------------------------

Utilize libbpf's feature of allowing to lookup internal maps by their
ELF section names. No need to guess or calculate the exact truncated
prefix taken from the object name.
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
Acked-by: NSong Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211021014404.2635234-11-andrii@kernel.org
(cherry picked from commit 4f2511e1)
Signed-off-by: NWang Yufen <wangyufen@huawei.com>