| From: |
| Viktor Malik <vmalik-AT-redhat.com> |
| To: |
| bpf-AT-vger.kernel.org |
| Subject: |
| [PATCH bpf-next 0/2] bpf: Add kfuncs for read-only string operations |
| Date: |
| Thu, 26 Sep 2024 08:18:20 +0200 |
| Message-ID: |
| <cover.1727329823.git.vmalik@redhat.com> |
| Cc: |
| Alexei Starovoitov <ast-AT-kernel.org>, Daniel Borkmann <daniel-AT-iogearbox.net>, Andrii Nakryiko <andrii-AT-kernel.org>, Martin KaFai Lau <martin.lau-AT-linux.dev>, Eduard Zingerman <eddyz87-AT-gmail.com>, Song Liu <song-AT-kernel.org>, Yonghong Song <yonghong.song-AT-linux.dev>, John Fastabend <john.fastabend-AT-gmail.com>, KP Singh <kpsingh-AT-kernel.org>, Stanislav Fomichev <sdf-AT-fomichev.me>, Hao Luo <haoluo-AT-google.com>, Jiri Olsa <jolsa-AT-kernel.org>, Viktor Malik <vmalik-AT-redhat.com> |
| Archive-link: |
| Article |
Kernel contains highly optimised implementation of traditional string
operations. Expose them as kfuncs to allow BPF programs leverage the
kernel implementation instead of needing to reimplement the operations.
These will be very helpful to bpftrace as it now needs to implement all
the string operations in LLVM IR.
Viktor Malik (2):
bpf: Add kfuncs for read-only string operations
selftests/bpf: Add tests for string kfuncs
kernel/bpf/helpers.c | 66 ++++++
.../selftests/bpf/prog_tests/string_kfuncs.c | 37 +++
.../selftests/bpf/progs/test_string_kfuncs.c | 215 ++++++++++++++++++
3 files changed, 318 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/string_kfuncs.c
create mode 100644 tools/testing/selftests/bpf/progs/test_string_kfuncs.c
--
2.46.0
