From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f169.google.com (mail-oi1-f169.google.com [209.85.167.169]) (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 417DE31A04D for ; Wed, 15 Apr 2026 16:39:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776271149; cv=none; b=c1n6iuQbGiDkE4NP4kOBsaXSXZ4Ab4bxDItHaGMAn/A9oDlbr2UJIPGL3cPycvwu0Py34tL96ICWqjZvb/AWOfTIK0pM3h/Rlz1WpIZLLiORU+FgtYl8/I2Z7D1KA/cr4Yl0Juh+2vOSfmWzYf1LK6UHyX5vaN7oGU5icqIDm4s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776271149; c=relaxed/simple; bh=X5EBIBrOJ4hsOwqWhSq3Nq+nWv+Uq/41K/QaIl/QM4U=; h=Message-ID:Date:MIME-Version:To:Cc:From:Subject:Content-Type; b=mwYH1UMxAWb3YVIydRIjmBxEYYKpilL24XL2c3FzkcVG11CBDMutfKfrGHcYBtlgOHI158s8hOC0RMD2NvQyTnKhFzq8ZOp8VC8L1Psh3h6ZyZ7CFfZk9PdaQXYFTEM5iuExvQcxA/DFjQ7AFfoPV5AGASTgfzWvoYGVpW5314M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linuxfoundation.org; spf=pass smtp.mailfrom=linuxfoundation.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dgukEfrn; arc=none smtp.client-ip=209.85.167.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linuxfoundation.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dgukEfrn" Received: by mail-oi1-f169.google.com with SMTP id 5614622812f47-46aa216a65aso3730985b6e.1 for ; Wed, 15 Apr 2026 09:39:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; t=1776271147; x=1776875947; darn=vger.kernel.org; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=eEdqFhEgofE4xYHAfpEI1KNxbMtFOItRV0+3gw/LD2M=; b=dgukEfrn1Z6EjbXudfM79tnvd6fHtXtGlmDXa56HyM1FrPxGthtqKD/W6F98Gr4fam HexEJ677XayD4b9yGk+39JZnjEcL9bNWWgMpcdL3IS2pQaNUWHzyHXynKqv5gJ983eyb EsWSykm2mrJfza4PbJbC+Gg1Efh6nh8uijsNM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776271147; x=1776875947; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:x-gm-gg:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=eEdqFhEgofE4xYHAfpEI1KNxbMtFOItRV0+3gw/LD2M=; b=ryyoTtowNIUYLu1gVpEFPb8g7SLApQXtboGmr4NmkQIB0VYdYGA00FaAcN0dtqCg6p +tjUSn4fjxsfrfQXKZMirgat948Mi8F5mSHU6qJJA/PvgjNGKIRldkb1fpXPBJ17YRAI zrt6rG1aYLtZs6ro73of2mQgV7liZYGvHQcNOwGsRnyyq9t2Ythn+7gmOdZp/wwuTfkA RwAJWNszClttHweUiu+1p4MyyQ8rXPUVbYFq2VdSRrt2a39kBpq02zt+etoWgvBi5icK iIzSjhkI9MZyD7nXAVWMAjWf2wJZZwNE4uCXxiD1MekDJPJVDC0g7rJ5Th08EjXFVt+U dBTA== X-Gm-Message-State: AOJu0YwqkyQfqXgx3ExrMIT/p9PWfRy7NkG7mqWFkMV1RUNuhbhy5glV 6A3kFRF57sZdeoAdhfkv4XCvuyXlMSUQkvadP4kuM8WwKHbkHRDY6ewufWOBZEc4ZF0= X-Gm-Gg: AeBDieuAGK4GGkNp9uG21Yzh6LpCF+EeVJ5wBvTt27Z3UvPof6Td9iJNFLHm7NXhwpe HiTzh7oN3GtWiw01rMLHZhfkozHAL3+VRlw+SoLc1a4hSwoT7yZRoPamc+0LUNPJsu1wlBA2JaK 5z3I5Dt1LKhRlP/DwkRiuxyq7WGC9rW66jJYLwn+lUYFXr2HnNMs5DFKNzcuAoIhEOr2HnIhy2c MVwUFibtyhy/4pehgvMvatjQf8TJYde9NV9fomBLR9jFNKTb7w0/nQp8uQZEmTP0CBNgFZzQLK1 R8FmnMZcxY9fWb3E2+RZzPLs+BjfP4hoxaymIgQ4Fx2Pb4rFrgA9ql8921jPopbuWorEN/4nkAI 10HQ9YO52Io5Fv4NGJ2peIMZb2J+OBuPo23SFUEVPh/3oEv/vMKvfVpFrBoX68Fn6lyJ5buzp7F ZhfdRmzidW9lLtzWkCUQcnXzoVnLo3Es0= X-Received: by 2002:a54:4389:0:b0:467:2375:58c9 with SMTP id 5614622812f47-478a0a0489emr9269684b6e.45.1776271147069; Wed, 15 Apr 2026 09:39:07 -0700 (PDT) Received: from [192.168.1.14] ([38.15.57.99]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4797fdcced6sm709977b6e.11.2026.04.15.09.39.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Apr 2026 09:39:06 -0700 (PDT) Message-ID: Date: Wed, 15 Apr 2026 10:39:05 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Andrew Morton , ljs@kernel.org, pfalcato@suse.de, vbabka@kernel.org, Marco Elver , Brendan Jackman , Suren Baghdasaryan Cc: linux-kernel@vger.kernel.org, Shuah Khan From: Shuah Khan Subject: Duplicate headers in tools/testing/shared directory diverged - rcupdate.h Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit All, I am sending this email to you all because you touched tools/testing/shared and its sub directories and show up in get_maintainer.pl -f tools/testing/shared/ output rbtree compile failed as it couldn't find urcu.h cc -I../shared -I. -I../../include -I../../arch/x86/include -I../../../lib -g -Og -Wall -D_LGPL_SOURCE -fsanitize=address -fsanitize=undefined -c -o rbtree_test.o rbtree_test.c In file included from ../shared/shared.h:11, from rbtree_test.c:9: ../shared/linux/rcupdate.h:5:10: fatal error: urcu.h: No such file or directory 5 | #include | ^~~~~~~~ compilation terminated. This sent me down the path to look at the duplicate headers in tools/testing/shared especially rcupdate.h which is under tools/testing/shared/linux It appears this file is an exact copy of include/linux/rcupdate.h and now it diverged. Why do we have these duplicate headers here in this shared directory - it appears they are out of date and lead to maintenance problems. thanks, -- Shuah