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c86f180ffc
linux/tools/lib/bpf
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Eduard Zingerman c86f180ffc libbpf: Make btf_parse_elf process .BTF.base transparently 
Update btf_parse_elf() to check if .BTF.base section is present.
The logic is as follows:

  if .BTF.base section exists:
     distilled_base := btf_new(.BTF.base)
  if distilled_base:
     btf := btf_new(.BTF, .base_btf=distilled_base)
     if base_btf:
        btf_relocate(btf, base_btf)
  else:
     btf := btf_new(.BTF)
  return btf

In other words:
- if .BTF.base section exists, load BTF from it and use it as a base
  for .BTF load;
- if base_btf is specified and .BTF.base section exist, relocate newly
  loaded .BTF against base_btf.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240613095014.357981-6-alan.maguire@oracle.com
2024-06-17 14:38:31 -07:00
..
.gitignore
bpf_core_read.h bpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD 2024-05-08 15:00:55 -07:00
bpf_endian.h
bpf_gen_internal.h libbpf: Support kfunc detection in light skeleton. 2023-03-22 09:31:05 -07:00
bpf_helpers.h libbpf: Fix bpf_ksym_exists() in GCC 2024-05-02 22:47:22 -07:00
bpf_prog_linfo.c
bpf_tracing.h libbpf: Avoid casts from pointers to enums in bpf_tracing.h 2024-05-02 22:58:58 -07:00
bpf.c libbpf: fix feature detectors when using token_fd 2024-05-15 09:34:53 -07:00
bpf.h libbpf: add support for BPF cookie for raw_tp/tp_btf programs 2024-03-19 23:05:34 -07:00
btf_dump.c libbpf: Fix dump of subsequent char arrays 2024-04-17 15:24:02 +02:00
btf_relocate.c libbpf: Split BTF relocation 2024-06-17 14:38:31 -07:00
btf.c libbpf: Make btf_parse_elf process .BTF.base transparently 2024-06-17 14:38:31 -07:00
btf.h libbpf: Make btf_parse_elf process .BTF.base transparently 2024-06-17 14:38:31 -07:00
Build libbpf: Split BTF relocation 2024-06-17 14:38:31 -07:00
elf.c libbpf: Move feature detection code into its own file 2024-01-24 16:21:02 -08:00
features.c libbpf: don't close(-1) in multi-uprobe feature detector 2024-05-31 14:56:51 -07:00
gen_loader.c libbpf: Store zero fd to fd_array for loader kfunc relocation 2023-05-16 22:09:23 -07:00
hashmap.c libbpf: Hashmap interface update to allow both long and void* keys/values 2022-11-09 20:45:14 -08:00
hashmap.h libbpf: Remove HASHMAP_INIT static initialization helper 2023-07-11 09:40:05 -07:00
libbpf_common.h libbpf: Fix potential uninitialized tail padding with LIBBPF_OPTS_RESET 2023-11-09 19:07:51 -08:00
libbpf_errno.c libbpf: Optimized return value in libbpf_strerror when errno is libbpf errno 2022-12-14 18:39:33 +01:00
libbpf_internal.h libbpf: Split BTF relocation 2024-06-17 14:38:31 -07:00
libbpf_legacy.h libbpf: Clean up deprecated and legacy aliases 2022-08-17 22:42:56 +02:00
libbpf_probes.c bpf: improve error message for unsupported helper 2024-03-28 18:30:53 -07:00
libbpf_version.h libbpf: Start v1.5 development cycle 2024-04-06 09:11:10 -07:00
libbpf.c libbpf: Auto-attach struct_ops BPF maps in BPF skeleton 2024-06-06 10:06:05 -07:00
libbpf.h libbpf: Auto-attach struct_ops BPF maps in BPF skeleton 2024-06-06 10:06:05 -07:00
libbpf.map libbpf: Split BTF relocation 2024-06-17 14:38:31 -07:00
libbpf.pc.template
linker.c libbpf: Make use of BTF field iterator in BPF linker code 2024-06-05 16:54:32 +02:00
Makefile kbuild: unexport abs_srctree and abs_objtree 2024-03-10 17:27:17 +09:00
netlink.c libbpf: Use OPTS_SET() macro in bpf_xdp_query() 2024-02-06 09:51:26 -08:00
nlattr.c libbpf: Fix alen calculation in libbpf_nla_dump_errormsg() 2023-02-10 15:27:22 -08:00
nlattr.h libbpf: add API to get XDP/XSK supported features 2023-02-02 20:48:24 -08:00
relo_core.c libbpf: fix signedness determination in CO-RE relo handling logic 2023-08-23 21:13:48 -07:00
relo_core.h bpf, libbpf: Add type match support 2022-07-05 21:14:25 -07:00
ringbuf.c libbpf: fix ring_buffer__consume_n() return result logic 2024-05-02 16:41:03 -07:00
skel_internal.h libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton 2022-08-25 18:52:29 -07:00
str_error.c libbpf: fix libbpf_strerror_r() handling unknown errors 2024-05-07 16:21:59 -07:00
str_error.h libbpf: Move feature detection code into its own file 2024-01-24 16:21:02 -08:00
strset.c libbpf: Hashmap interface update to allow both long and void* keys/values 2022-11-09 20:45:14 -08:00
strset.h
usdt.bpf.h libbpf: Avoid casts from pointers to enums in bpf_tracing.h 2024-05-02 22:58:58 -07:00
usdt.c libbpf: Add uprobe multi link support to bpf_program__attach_usdt 2023-08-21 15:51:26 -07:00
zip.c libbpf: Ignore warnings about "inefficient alignment" 2023-03-16 18:20:08 +01:00
zip.h libbpf: Implement basic zip archive parsing support 2023-03-01 16:05:34 -08:00