[PATCH v5 bpf-next 0/4] capture integers in BTF type info for map defs

[Andrii Nakryiko <andriin@fb.com>]

This patch set implements an update to how BTF-defined maps are specified. The
change is in how integer attributes, e.g., type, max_entries, map_flags, are
specified: now they are captured as part of map definition struct's BTF type
information (using array dimension), eliminating the need for compile-time
data initialization and keeping all the metadata in one place.

All existing selftests that were using BTF-defined maps are updated, along
with some other selftests, that were switched to new syntax.

v4->v5:
- revert sample_map_ret0.c, which is loaded with iproute2 (kernel test robot);
v3->v4:
- add acks;
- fix int -> uint type in commit message;
v2->v3:
- rename __int into __uint (Yonghong);
v1->v2:
- split bpf_helpers.h change from libbpf change (Song).

Andrii Nakryiko (4):
  libbpf: capture value in BTF type info for BTF-defined map defs
  selftests/bpf: add __uint and __type macro for BTF-defined maps
  selftests/bpf: convert selftests using BTF-defined maps to new syntax
  selftests/bpf: convert legacy BPF maps to BTF-defined ones

 tools/lib/bpf/libbpf.c                        |  58 +++++----
 tools/testing/selftests/bpf/bpf_helpers.h     |   3 +
 tools/testing/selftests/bpf/progs/bpf_flow.c  |  28 ++---
 .../selftests/bpf/progs/get_cgroup_id_kern.c  |  26 ++---
 .../testing/selftests/bpf/progs/netcnt_prog.c |  20 ++--
 tools/testing/selftests/bpf/progs/pyperf.h    |  90 +++++++-------
 .../selftests/bpf/progs/socket_cookie_prog.c  |  13 +--
 .../bpf/progs/sockmap_verdict_prog.c          |  48 ++++----
 .../testing/selftests/bpf/progs/strobemeta.h  |  68 +++++------
 .../selftests/bpf/progs/test_btf_newkv.c      |  13 +--
 .../bpf/progs/test_get_stack_rawtp.c          |  39 +++----
 .../selftests/bpf/progs/test_global_data.c    |  37 +++---
 tools/testing/selftests/bpf/progs/test_l4lb.c |  65 ++++-------
 .../selftests/bpf/progs/test_l4lb_noinline.c  |  65 ++++-------
 .../selftests/bpf/progs/test_map_in_map.c     |  30 ++---
 .../selftests/bpf/progs/test_map_lock.c       |  26 ++---
 .../testing/selftests/bpf/progs/test_obj_id.c |  12 +-
 .../bpf/progs/test_select_reuseport_kern.c    |  67 ++++-------
 .../bpf/progs/test_send_signal_kern.c         |  26 ++---
 .../bpf/progs/test_sock_fields_kern.c         |  78 +++++--------
 .../selftests/bpf/progs/test_spin_lock.c      |  36 +++---
 .../bpf/progs/test_stacktrace_build_id.c      |  55 ++++-----
 .../selftests/bpf/progs/test_stacktrace_map.c |  52 +++------
 .../selftests/bpf/progs/test_tcp_estats.c     |  13 +--
 .../selftests/bpf/progs/test_tcpbpf_kern.c    |  26 ++---
 .../selftests/bpf/progs/test_tcpnotify_kern.c |  28 ++---
 tools/testing/selftests/bpf/progs/test_xdp.c  |  26 ++---
 .../selftests/bpf/progs/test_xdp_loop.c       |  26 ++---
 .../selftests/bpf/progs/test_xdp_noinline.c   |  81 +++++--------
 .../selftests/bpf/progs/xdp_redirect_map.c    |  12 +-
 .../testing/selftests/bpf/progs/xdping_kern.c |  12 +-
 .../selftests/bpf/test_queue_stack_map.h      |  30 ++---
 .../testing/selftests/bpf/test_sockmap_kern.h | 110 +++++++++---------
 33 files changed, 559 insertions(+), 760 deletions(-)

-- 
2.17.1