On 1/17/24 5:06 AM, Andrey Grafin wrote:
This patch allows to auto create BPF_MAP_TYPE_ARRAY_OF_MAPS and
BPF_MAP_TYPE_HASH_OF_MAPS with values of BPF_MAP_TYPE_PERF_EVENT_ARRAY
by bpf_object__load().
Previous behaviour created a zero filled btf_map_def for inner maps and
tried to use it for a map creation but the linux kernel forbids to create
a BPF_MAP_TYPE_PERF_EVENT_ARRAY map with max_entries=0.
Fixes: 646f02ffdd49 ("libbpf: Add BTF-defined map-in-map support")
Signed-off-by: Andrey Grafin <conquistador@xxxxxxxxxxxxxx>
If the previous patch has been ack'ed, and the current version
is the same or only has minor change compared to previous version,
you can carry previous Ack. This will save maintainer and reviewer's
time.
Acked-by: Yonghong Song <yonghong.song@xxxxxxxxx>
