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([2620:10d:c090:500::1:634a]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2c16edc0436sm3501923eec.22.2026.03.26.15.28.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2026 15:28:28 -0700 (PDT) Message-ID: <5bc26888270c2c4ac32489ad8cdc8e71fca7e2db.camel@gmail.com> Subject: Re: [PATCH 0/4] selftests/bpf: impose global ordering for test decl_tags From: Eduard Zingerman To: bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org Cc: daniel@iogearbox.net, martin.lau@linux.dev, kernel-team@fb.com, yonghong.song@linux.dev, cupertino.miranda@oracle.com Date: Thu, 26 Mar 2026 15:28:26 -0700 In-Reply-To: <20260326-selftests-global-tags-ordering-v1-0-5dd2ced5d9ad@gmail.com> References: <20260326-selftests-global-tags-ordering-v1-0-5dd2ced5d9ad@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 (3.58.3-1.fc43) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2026-03-26 at 10:39 -0700, Eduard Zingerman wrote: > Impose global ordering for all decl tags used by test_loader.c based > tests: __success, __failure, __msg, etc. The tags are now sorted by > testing framework to be processed in the same order they appear in the > C source code of the test. >=20 > The ordering is necessary for gcc-bpf. Neither GCC nor the C standard > defines the order in which function attributes are consumed. > While Clang tends to preserve tags definition order in the output BTF, > GCC does not. This inconsistency causes BPF tests with multiple __msg > entries to fail when compiled with GCC. >=20 > This is based on a patch [1] from Cupertino Miranda (see patch #3) and > includes some additional cleanups for test_loader.c decl tags > declaration and processing (see patches #1, #2, #4). >=20 > [1] https://lore.kernel.org/bpf/20260305130035.192080-1-cupertino.miranda= @oracle.com/ >=20 > --- I did not specify the bpf-next tag :( Will wait a bit and resend.