libbpf: Add BPF_CORE_READ/BPF_CORE_READ_INTO helpers
Add few macros simplifying BCC-like multi-level probe reads, while also emitting CO-RE relocations for each read. Signed-off-by:Andrii Nakryiko <andriin@fb.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
John Fastabend <john.fastabend@gmail.com> Acked-by:
Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20191008175942.1769476-7-andriin@fb.com
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- tools/lib/bpf/Makefile 2 additions, 1 deletiontools/lib/bpf/Makefile
- tools/lib/bpf/bpf_core_read.h 167 additions, 0 deletionstools/lib/bpf/bpf_core_read.h
- tools/lib/bpf/bpf_helpers.h 9 additions, 23 deletionstools/lib/bpf/bpf_helpers.h
- tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_arrays.c
- tools/testing/selftests/bpf/progs/test_core_reloc_flavors.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_flavors.c
- tools/testing/selftests/bpf/progs/test_core_reloc_ints.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_ints.c
- tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_kernel.c
- tools/testing/selftests/bpf/progs/test_core_reloc_misc.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_misc.c
- tools/testing/selftests/bpf/progs/test_core_reloc_mods.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_mods.c
- tools/testing/selftests/bpf/progs/test_core_reloc_nesting.c 1 addition, 0 deletionstools/testing/selftests/bpf/progs/test_core_reloc_nesting.c
- tools/testing/selftests/bpf/progs/test_core_reloc_primitives.c 1 addition, 0 deletions.../testing/selftests/bpf/progs/test_core_reloc_primitives.c
- tools/testing/selftests/bpf/progs/test_core_reloc_ptr_as_arr.c 1 addition, 0 deletions.../testing/selftests/bpf/progs/test_core_reloc_ptr_as_arr.c
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