From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f49.google.com (mail-wm1-f49.google.com [209.85.128.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D3E239D6C5 for ; Tue, 28 Apr 2026 23:45:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777419941; cv=none; b=hJ2WxnnXiLjG+w+WT04xAkmlJuyQcH6FydIP+MriDdUKPzCyZxX4SSIrn+RqIlaNKIkaizQML/JRaLLb9I45Bi48vrYT61iyyFqnJVs2N+NIEbrWdfOOHluDqKy+BHg7Tb1sDvPJv7PIVorBdTXIu4qp3rYYNw6JwPzQlJT2S+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777419941; c=relaxed/simple; bh=95satU9q5Agv8MCheK9ldPmy80aoR7ITuWu90cxm+F4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=igYoskPnf4Q7dtsRYBCkiWHiDzSpXqtxK3GE3EqfDRZ/U17fChBKkDZWpP7lZKQBQSro8KbHsjK+zH6xnL7br2EatrHhvbVefO8mnVWCym1ximUV43gmi1XVxRZSeQckjk/GV2LidVlzirH1vBXwL8L4ARjTBCNVmXgzpJnXG7Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=K9/qlE5h; arc=none smtp.client-ip=209.85.128.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="K9/qlE5h" Received: by mail-wm1-f49.google.com with SMTP id 5b1f17b1804b1-488e1a8ac40so146588535e9.2 for ; Tue, 28 Apr 2026 16:45:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1777419938; x=1778024738; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=PCFQo4Aru/JTwsEjOuajhbqjGOTLFNs9niLacwe8mnA=; b=K9/qlE5hGgkGuEZxJBdUE4N99tBYDcQ+JHa7qtCAVggP45Ok7MTSFhqN+WWDgZqC0X R61B6YvctRytVRiRc9VllQZ9u+f3PKpDyJXCk9nSEBY38Pm2paNHWotdrH/Uf1AclZ3C eKLeakwQvDeTgqLO/ODIxw/Rr4E+YBHn5WxAkN7EDv+ZR3cfsfR6krjDv24aAQ954FNi zno1jHr8Mfju1piLzgRJyIlnBQGkTs2w0C4rbbfu9aXYzBlQ50t5eeJNWOXZysRb44cm AkffyRH0KQb1r7Llg4l+Kr5ARqXq3sSXnnbPLi0vnNOnswR0QJlSzt0SNWXILNC2/erx lDxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777419938; x=1778024738; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=PCFQo4Aru/JTwsEjOuajhbqjGOTLFNs9niLacwe8mnA=; b=Rcci3PtTGe3zG4pGNEvIXllXIcdR/YEOTxEMNyp7Y+WbhVvwW/dJV2wHQ2gbPlLKpt 7cWZQpYz5PD3tLEvvZPoKQo8viji2R7M92HXrJYRkGoXi2q3uSXmSEIvvBhP5XlV0Ar1 7ENSCEYL2Pgt7BnLCltJW97JcS/TVc9BkD8R70pBCRqcMA1lOxGMZfyDMWT0L2/ir9na mHhYUw/a6mKqPnV0UkDLZ1a8YQeoUvqGaJJa9j+gpY0vX1iYrgnyr/c3HJcDFXUrLHWE 6YAI75//7L/Ri+LLATWFGjvbp1k9Lyolxji/D733AgfXYa7lKc8KI8TVwoPaz7jBjVL0 9VBw== X-Forwarded-Encrypted: i=1; AFNElJ+W56DFrSfcs5mSzksM0N0i6InrTP+3e70+M/NiXic7MreRZRCfnTzlunhoqg8i4yiIyy3C20YmG4V4sgg=@vger.kernel.org X-Gm-Message-State: AOJu0YzUPNVlhVxRN8E1Vu9SJ16Oj5xfN8dTHP6/C6pKRWQ4KlrApg9S CRxlKqufuu2w7LH1/+B2d0ye4BVLyFaz0O9MRoGspwNu5ifMC8ON/eheRS6j5Lfcpmg= X-Gm-Gg: AeBDievfRrAVJRYZ1vMopTDNWdfDWj0sGAK5hJhjesvEy0Agf3Yoc6dVOE6w10SeliM JTJc/8SzrkPZKlvApq3luuZKPFMg1yAwWBpUh8neH/ZINdAEC63E+b2muSvmEhI1SWedPT4EzN6 yXAH4o9MxxCcQgPZMeQRT4YlBAQrYY+Ns7tKbaeCsBnoiH5e7Tmtwe9gCA8hgvNtkkFo9bwjwQX b6GQj1ead7YrMd1xf2dqXSourMk+h0k5EmwnU1eDkVxdgmG88+JkL3sZb4bzNiRzlDXMX1PzI2I Y5xvK40KA/H2qKXeEBYsRs6gHhse4md2VwzTb2B4iEeYRJTKRuFGgAxyag5ZUEZqNiZwrrgGUya uiNvokCBszaATXszHnGpwbv+uRXvrDjq6cMc51yTnRfuq/+vxHqhrb61/bbObmmPDNQ/qSOEApW XTGHjdGwee72GPmAaKcvoekBip X-Received: by 2002:a05:600c:5494:b0:488:ffad:6728 with SMTP id 5b1f17b1804b1-48a77b05c77mr86131225e9.19.1777419938146; Tue, 28 Apr 2026 16:45:38 -0700 (PDT) Received: from localhost ([2804:7f0:b765:105d:ce28:aaff:fe86:149c]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-95cb7765acasm135209241.8.2026.04.28.16.45.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2026 16:45:37 -0700 (PDT) From: =?utf-8?q?Ricardo_B=2E_Marli=C3=A8re?= Date: Tue, 28 Apr 2026 20:45:06 -0300 Subject: [PATCH bpf-next v8 05/11] selftests/bpf: Make skeleton headers order-only prerequisites of .test.d Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260428-selftests-bpf_misconfig-v8-5-bf02cf97dbcb@suse.com> References: <20260428-selftests-bpf_misconfig-v8-0-bf02cf97dbcb@suse.com> In-Reply-To: <20260428-selftests-bpf_misconfig-v8-0-bf02cf97dbcb@suse.com> To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Kumar Kartikeya Dwivedi , Song Liu , Yonghong Song , Jiri Olsa , Shuah Khan , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt Cc: bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Alan Maguire , "Ricardo B. Marliere" X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openssh-sha256; t=1777419912; l=2200; i=rbm@suse.com; h=from:subject:message-id; bh=95satU9q5Agv8MCheK9ldPmy80aoR7ITuWu90cxm+F4=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgguRCc5X8/UX9M40lkMnr//aFGOhce x5ezt8MFNUFlqYAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QD+jepyNJMWD40lOW5GvIdeaEl5O4OF/51LYPAKc8TQEKsNlSTvnUZVCp681bxFrGne7JnKymWr Z4n/nlSmKBwQ= X-Developer-Key: i=rbm@suse.com; a=openssh; fpr=SHA256:pzhe0fJpYLz+3cZ33FFPhIfaUElk9CXPFFXmalIH+1g The .test.d dependency files are generated by the C preprocessor and list the headers each test file actually #includes. Skeleton headers appear in those generated lists, so the .test.o -> .skel.h dependency is already tracked by the .d file content. Make skeletons and BPFOBJ order-only prerequisites of .test.d so that a missing or skipped skeleton does not prevent .test.d generation, and regenerating a skeleton or rebuilding libbpf.a does not force .test.d to be recreated. This avoids unnecessary recompilation and, more importantly, avoids build errors when a skeleton was intentionally skipped due to a BPF compilation failure. Note that adding a new BPF skeleton via a modified existing local header still works correctly: GNU make builds order-only prerequisites that do not exist (the order-only qualifier only suppresses timestamp-driven rebuilds, not existence-driven builds), so a brand-new .skel.h listed in TRUNNER_BPF_SKELS is generated even when .test.d is otherwise up to date. The modified local header invalidates .test.o through the previously included .d content, forcing a recompile that regenerates .test.d with the new .skel.h dependency captured by gcc -MMD. Signed-off-by: Ricardo B. Marlière --- tools/testing/selftests/bpf/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 9a4d8bea0c18..608e6dff0392 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -726,11 +726,11 @@ $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ $(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ $(TRUNNER_TESTS_DIR)/%.c \ $(TRUNNER_EXTRA_HDRS) \ + $$(BPFOBJ) | $(TRUNNER_OUTPUT) \ $(TRUNNER_BPF_SKELS) \ $(TRUNNER_BPF_LSKELS) \ $(TRUNNER_BPF_LSKELS_SIGNED) \ - $(TRUNNER_BPF_SKELS_LINKED) \ - $$(BPFOBJ) | $(TRUNNER_OUTPUT) + $(TRUNNER_BPF_SKELS_LINKED) ifeq ($(filter clean docs-clean emit_tests,$(MAKECMDGOALS)),) include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) -- 2.54.0