]> git.baikalelectronics.ru Git - kernel.git/commit
libbpf: Add BPF_CORE_READ/BPF_CORE_READ_INTO helpers
authorAndrii Nakryiko <andriin@fb.com>
Tue, 8 Oct 2019 17:59:41 +0000 (10:59 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Tue, 8 Oct 2019 21:16:03 +0000 (23:16 +0200)
commit6632cb7d8101841aec2491f86b58d3c886d4cb82
treeefa28d61256bd444894a495495ca22c0787dff0f
parentc38cb4235bffb6c63f5ccc62da95218c3730a799
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
12 files changed:
tools/lib/bpf/Makefile
tools/lib/bpf/bpf_core_read.h [new file with mode: 0644]
tools/lib/bpf/bpf_helpers.h
tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c
tools/testing/selftests/bpf/progs/test_core_reloc_flavors.c
tools/testing/selftests/bpf/progs/test_core_reloc_ints.c
tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c
tools/testing/selftests/bpf/progs/test_core_reloc_misc.c
tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
tools/testing/selftests/bpf/progs/test_core_reloc_nesting.c
tools/testing/selftests/bpf/progs/test_core_reloc_primitives.c
tools/testing/selftests/bpf/progs/test_core_reloc_ptr_as_arr.c