From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 391D2C7EE2E for ; Mon, 12 Jun 2023 21:56:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234860AbjFLV4Q (ORCPT ); Mon, 12 Jun 2023 17:56:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236558AbjFLV4N (ORCPT ); Mon, 12 Jun 2023 17:56:13 -0400 Received: from mail-io1-xd34.google.com (mail-io1-xd34.google.com [IPv6:2607:f8b0:4864:20::d34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6570E6B for ; Mon, 12 Jun 2023 14:56:11 -0700 (PDT) Received: by mail-io1-xd34.google.com with SMTP id ca18e2360f4ac-77ae75c75deso33796239f.1 for ; Mon, 12 Jun 2023 14:56:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; t=1686606971; x=1689198971; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=ml29fkL0hSCj84Mk28f10C7ABSuBvDu49wOHkLyniAQ=; b=IuDlcxanG+l9vb81mL1RI/VWq8sfXv6ES9L9wa7sHRPbxtBZmXS/jLrc/5YcoFL33L vtE+FpdW+o4LqyOdcshRpuxxcgNHVjYTUMZEY/VhjhBsYDaJ6qWiiGSyLOWs7NTg+MgG DZZ6EgKS/quWH4Vf1Rd144ZjBTdnOhVdCJkTA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686606971; x=1689198971; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ml29fkL0hSCj84Mk28f10C7ABSuBvDu49wOHkLyniAQ=; b=Tk+nGvhV//Czp0A/+8j/G3C6EERKYeDjF7OIwPdAiaa4ZwswAtbBIUxvIZFpjyr/Wg Lrtw99Do11QaP7INMiHDqrC7+8eNMAKvM7E9NRXCz78r85sY+oFx0gOhDNaLyFeSaFy7 CBAEfzrgbu+mGAeGQ2sS+l7bG1dSKibiZuLyMbfk2MeGDwgJ3p2H8bnHimpaP2HyBD9F hP6l1x3Bu0NMsGXrTfG/uR0yy9ImP/9lACIyOAPy95IFoDEQ644A+ij71Z9RWqwUgpMG UTmfdyCGelxPTiyn1wgDPao2XXmpAYCYpsGvCm2Nf/I3cKX25rSFk+v+7xWG325tMVZH oIew== X-Gm-Message-State: AC+VfDyiEkThShWmGOoegLW3XVJCcDrhHHclAvdQFxiUXl/eifrnF7zE XlzkQd7hQYvxwqUtcqXKSO3fmQ== X-Google-Smtp-Source: ACHHUZ49EsFBr4joLqlez0MU1b8frpGHM3Lo3FQAKIhMpGXoC3Ok/ObXJeVdaqOusoxG1mZ4KjDO/g== X-Received: by 2002:a05:6602:15d1:b0:775:78ff:4fff with SMTP id f17-20020a05660215d100b0077578ff4fffmr8682142iow.1.1686606970969; Mon, 12 Jun 2023 14:56:10 -0700 (PDT) Received: from [192.168.1.128] ([38.15.45.1]) by smtp.gmail.com with ESMTPSA id o8-20020a02cc28000000b004186bea7f51sm3014623jap.54.2023.06.12.14.56.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Jun 2023 14:56:10 -0700 (PDT) Message-ID: <3c03e28b-8006-a4ac-30bc-6aaf83ccb5d5@linuxfoundation.org> Date: Mon, 12 Jun 2023 15:56:10 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH v2] selftests: prctl: Add new prctl test for PR_SET_NAME Content-Language: en-US To: Osama Muhammad Cc: shuah@kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Shuah Khan References: <20230607153600.15816-1-osmtendev@gmail.com> From: Shuah Khan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On 6/10/23 07:01, Osama Muhammad wrote: > Hi all, > > I looked into it and tried to use TASK_COMM_LEN in the test. Even > though I included "linux/sched.h '', I was not able to compile the > test because it couldn't find it in the header file. > I dived deep into the issue and turns out header file mapped in > /usr/include/linux/sched.h is actually mapped to > /include/uapi/linux/sched.h[1] in linux source, > where TASK_COMM_LEN is not even defined. Instead TASK_COMM_LEN is > defined in /include/linux/sched.h which is not mapped to any header > files in > userspace(/(/usr/include/linux). > I also tried to find the TASK_COM_LEN in /usr/include/linux/ but I > couldn't find it. Following are the search results. > grep -rnw '/usr/include/linux/' -e 'TASK_COMM_LEN" > RESULTS OF COMMAND :- /usr/include/linux/taskstats.h:38:#define > TS_COMM_LEN 32 /* should be >= TASK_COMM_LEN > Based on this information, I have two questions: > 1. Would this require a fix to move 'TASK_COMM_LEN' macro from > /include/linux/sched.h to UAPI headers /include/uapi/linux/sched.h. > 2. Is there any other way to access TASK_COMM_LEN in the selftest that > I'm not aware of? > > [1]:-https://elixir.bootlin.com/linux/v5.15.116/source/include/uapi/linux/sched.h > The best source is Linux mainline. Take a look at test files that include linux/sched.h arm64/abi/tpidr2.c is one of them. Did you install headers before compiling the test? make headers_install thanks, -- Shuah