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Wed, 01 Jul 2026 15:50:36 -0700 (PDT) Received: from krios.home.ca.int.haoyugu.com ([198.58.242.173]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8f4724bad04sm12064736d6.44.2026.07.01.15.50.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jul 2026 15:50:36 -0700 (PDT) From: Emil Tsalapatis To: bpf@vger.kernel.org Cc: ast@kernel.org, andrii@kernel.org, memxor@gmail.com, daniel@iogearbox.net, eddyz87@gmail.com, mattbobrowski@google.com, song@kernel.org, Emil Tsalapatis Subject: [PATCH bpf-next v3 0/5] selftests/bpf: libarena cleanup and bitmap struct Date: Wed, 1 Jul 2026 18:50:29 -0400 Message-ID: <20260701225034.12628-1-emil@etsalapatis.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Cleanup patches for libarena, along with a new bitmap data type that is in use by sched-ext. Patch 1 is an NFC that properly renames the buddy selftests for consistency. Patch 2 fixes the zero variable used in libarena for can_loop based looping, and afterwrds removes all bpf_for() instances from the code. Patch 3 fixes an (untriggered) edge case that could cause spurious selftest failures. Finally, patches 4 and 5 introduce the bitmap data structure along with selftests. Signed-off-by: Emil Tsalapatis CHANGELOG ========= v2 -> v3: (https://lore.kernel.org/bpf/20260701185235.4516-1-emil@etsalapatis.com) - Remove unused macros and fix typo in commit message (AI) v1 -> v2: (https://lore.kernel.org/bpf/20260618085626.19633-1-emil@etsalapatis.com) - Added acks by Ihor and Eduard - Fix missing commit message (Ihor) - Enforce 64 bits per cell with BITS_TO_LONG_LONG (Sashiko) - Add test for bmp_copy (Ihor) - Add atomic versions of _set() and _clear() (Ihor) and add a parallel selftest for them. Emil Tsalapatis (5): selftests/bpf: libarena: Fix can-loop zero variable definition selftests/bpf: libarena: Clean up allocation state before buddy tests selftests/bpf: Add arena-based bitmap data structure selftests/bpf: libarena: Add bitmap selftests selftests/bpf: libarena: Add parallel bitmap selftest .../bpf/libarena/include/libarena/bitmap.h | 34 ++ .../bpf/libarena/include/libarena/common.h | 2 +- .../libarena/selftests/test_asan_buddy.bpf.c | 8 +- .../bpf/libarena/selftests/test_bitmap.bpf.c | 394 ++++++++++++++++++ .../bpf/libarena/selftests/test_buddy.bpf.c | 8 +- .../selftests/test_parallel_bitmap.bpf.c | 190 +++++++++ .../selftests/test_parallel_spmc.bpf.c | 9 +- .../selftests/bpf/libarena/src/bitmap.bpf.c | 245 +++++++++++ .../selftests/bpf/libarena/src/common.bpf.c | 9 +- .../selftests/bpf/prog_tests/libarena.c | 8 +- .../selftests/bpf/prog_tests/libarena_asan.c | 8 +- 11 files changed, 899 insertions(+), 16 deletions(-) create mode 100644 tools/testing/selftests/bpf/libarena/include/libarena/bitmap.h create mode 100644 tools/testing/selftests/bpf/libarena/selftests/test_bitmap.bpf.c create mode 100644 tools/testing/selftests/bpf/libarena/selftests/test_parallel_bitmap.bpf.c create mode 100644 tools/testing/selftests/bpf/libarena/src/bitmap.bpf.c -- 2.54.0