kernel/linux.git/tools/testing/selftests/bpf/bpf_arena_common.h, branch masterLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=master2025-07-11T17:43:54+00:00selftests/bpf: add selftests for bpf_arena_reserve_pages2025-07-11T17:43:54+00:00Emil Tsalapatisemil@etsalapatis.com2025-07-09T19:13:12+00:00urn:sha1:9f9559f0acc42e98709017951144ef6334dad187
Add selftests for the new bpf_arena_reserve_pages kfunc.
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250709191312.29840-3-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
selftests/bpf: Introduce __arena_global2024-07-02T16:31:52+00:00Ilya Leoshkevichiii@linux.ibm.com2024-07-01T23:40:28+00:00urn:sha1:b6349fd3448cf349af327f90585a712d60265429
While clang uses __attribute__((address_space(1))) both for defining
arena pointers and arena globals, GCC requires different syntax for
both. While __arena covers the first use case, introduce __arena_global
to cover the second one.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240701234304.14336-11-iii@linux.ibm.com
libbpf, selftests/bpf: Adjust libbpf, bpftool, selftests to match LLVM2024-03-15T21:24:00+00:00Alexei Starovoitovast@kernel.org2024-03-15T02:18:32+00:00urn:sha1:10ebe835c937a11870690aa44c7c970fe906ff54
The selftests use
to tell LLVM about special pointers. For LLVM there is nothing "arena"
about them. They are simply pointers in a different address space.
Hence LLVM diff https://github.com/llvm/llvm-project/pull/85161 renamed:
. macro __BPF_FEATURE_ARENA_CAST -> __BPF_FEATURE_ADDR_SPACE_CAST
. global variables in __attribute__((address_space(N))) are now
placed in section named ".addr_space.N" instead of ".arena.N".
Adjust libbpf, bpftool, and selftests to match LLVM.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20240315021834.62988-3-alexei.starovoitov@gmail.com
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages2024-03-11T22:43:43+00:00Alexei Starovoitovast@kernel.org2024-03-08T01:08:10+00:00urn:sha1:80a4129fcf20da3c6941411155a9b3b45caa5b8d
Add unit tests for bpf_arena_alloc/free_pages() functionality
and bpf_arena_common.h with a set of common helpers and macros that
is used in this test and the following patches.
Also modify test_loader that didn't support running bpf_prog_type_syscall
programs.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240308010812.89848-13-alexei.starovoitov@gmail.com