- update to v1.1.0:
User space-side features and APIs:
* user-space ring buffer (BPF_MAP_TYPE_USER_RINGBUF) support;
* new documentation page listing all recognized SEC() definitions;
* BTF dedup improvements:
* unambiguous fwd declaration resolution for structs and unions;
* better handling of some corner cases with identical structs and arrays;
* mixed enum and enum64 forward declaration resolution logic;
* bpf_{link,btf,pro,mapg}_get_fd_by_id_opts() and bpf_get_fd_by_id_opts()
APIs;
* libbpf supports loading raw BTF for BPF CO-RE from known search paths;
* support for new cgroup local storage (BPF_MAP_TYPE_CGRP_STORAGE);
* libbpf will only add BPF_F_MMAPABLE flag for data maps with global
(i.e., non-static) vars;
* latest Linux UAPI headers with lots of changes synced into
include/uapi/linux.
BPF-side features and APIs;
* BPF_PROG2() macro added that supports struct-by-value arguments;
* new BPF helpers:
* bpf_user_ringbuf_drain();
* cgrp_storage_get() and cgrp_storage_delete().
Bug fixes
* better handling of padding corner cases;
* btf__align_of() determines packed structs better now;
* improved handling of enums of non-standard sizes;
* USDT spec parsing improvements;
* overflow handling fixes for ringbufs;
* Makefile fixes to support cross-compilation for 32-bit targets;
* fix crash if SEC("freplace") programs don't have attach_prog_fd set;
* better handling of file existence checks when running as non-root with