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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 01C81C43458 for ; Mon, 6 Jul 2026 13:47:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E58E06B00C0; Mon, 6 Jul 2026 09:47:06 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E2FE46B00C2; Mon, 6 Jul 2026 09:47:06 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CFB316B00C5; Mon, 6 Jul 2026 09:47:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id A792C6B00C0 for ; Mon, 6 Jul 2026 09:47:06 -0400 (EDT) Received: from smtpin11.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 30E481C3587 for ; Mon, 6 Jul 2026 13:47:06 +0000 (UTC) X-FDA: 84958478052.11.7D5386C Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf14.hostedemail.com (Postfix) with ESMTP id 7B35F100013 for ; Mon, 6 Jul 2026 13:47:04 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=mEXCbBS1; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf14.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1783345624; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=bE75Uesevd0qFjsHhZ00uNBsyFy5Mf+YUOmZN/u63ZU=; b=OlEHvi7T+vIIpdux+SCnuL7FZiexzbZucvmyvigGkDD1aiaB+b8uBHEPpPdGPGJTCyU4MM 2fK9xSGP4LNfz77dOOMs/xE527l47Fia1CF7bGhyF9rBMu+g1oCMal+MvQ9zMSO9aPLRMc IY+RJjBBX1Uj3KZcoeCvTVJUjG4wV8Q= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=mEXCbBS1; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf14.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783345624; b=FI5AC/FqzWxbzMqP2VNKNpzoEsDZYK7a24cz5LgLxfC+BrSJyrKtGx7xYlW3CU03zictU9 yCBl2FCwpeFzoG/Izi59x8/bBCBTJD00n6DYjRNlihBY8GvwvG4dfzus7f21uly3XSOYWS klMzfIhNZif7YvgYBlPSB4TFivLczPo= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 0768B600AE; Mon, 6 Jul 2026 13:47:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5483B1F00ADF; Mon, 6 Jul 2026 13:46:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783345623; bh=bE75Uesevd0qFjsHhZ00uNBsyFy5Mf+YUOmZN/u63ZU=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=mEXCbBS1hGkkaViwffeIdfYIe5kFScAv78jQ6xrbIsLwo7aYx/WLhz7L9yw2UHucL rIDkx0WF4bI/LYiY6J5m9G5LzXJQDEQr8S4dXIjfZOOV69X+wYBg0EOTykMX8hKz+U v8dchSGhziyCz8IuNne1tZi83FFi/cscqxm7iongQMyE+tFNe8Db+DEuUQ2FOd79bq OVbBNzxcmuKW81iSJn2eKQQKbuiW8Fm0pcsWfSl/rZChQBjl4ICJ5ufNNpbGidPYqt rNBJsEvmYj1WHWU1/EJFJU1Nx7s6B7uVR4Q2Dqp+e2gWKc9oGZdPTJyxhkBWTd5uVM LJybkhEu+Oe+A== Message-ID: <4913bf32-3695-4983-9ad7-ea0638807453@kernel.org> Date: Mon, 6 Jul 2026 15:46:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 1/5] selftests/mm: move pkey selftest helpers to pkey_util.c To: Hongfu Li Cc: akpm@linux-foundation.org, hongfu.li@linux.dev, jhubbard@nvidia.com, joey.gouly@arm.com, keith.lucas@oracle.com, kevin.brodsky@arm.com, liam@infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, ljs@kernel.org, mhocko@suse.com, rppt@kernel.org, shuah@kernel.org, surenb@google.com, usama.anjum@collabora.com, vbabka@kernel.org, yury.khrustalev@arm.com, zwisler@google.com References: <436863f8-5840-4c3f-82ec-c55b46fb9969@kernel.org> <20260706103143.3638104-1-lihongfu@kylinos.cn> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20260706103143.3638104-1-lihongfu@kylinos.cn> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: jk7w9y1p5w3a116h7cfx8u8tndjwm9kn X-Rspamd-Queue-Id: 7B35F100013 X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783345624-463606 X-HE-Meta: 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 YL6sYqfo 9i+PYxn7OS6uVLtSedN0tnMiMeLgin5W3j3y7Q04b5VTbdtPgIgkpFofSejfjOOlxIg85QugrAcQxxkdRSDmR8b8DuQJLlDhJejYRUlhRR4juec3Hynm2y8YOD1HNlNPnibUh+NEDC+djrfFxFRaCGlZ2hQXwZd0yPqurwoPMLqm6ALqlYkNJ4UL0Z421GZQSAkh6BVXzGCw6J9fVa3IeYPB1xJ5GdrIkzntYKv83unb9jhinkCf8bVR29/AbGbL8TYPjNbkexTegraZi1t/w8+dpCH7VKMDT310GvCO7qKo8PwQyJvO7+4c37g== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/6/26 12:31, Hongfu Li wrote: > Hi, > >>> diff --git a/tools/testing/selftests/mm/pkey_util.c b/tools/testing/selftests/mm/pkey_util.c >>> index 255b332f7a08..fbef3cd45447 100644 >>> --- a/tools/testing/selftests/mm/pkey_util.c >>> +++ b/tools/testing/selftests/mm/pkey_util.c >>> @@ -2,9 +2,99 @@ >>> #define __SANE_USERSPACE_TYPES__ >>> #include >>> #include >>> +#include >>> +#include >>> +#include >>> >>> #include "pkey-helpers.h" >>> >>> +int iteration_nr = 1; >>> +int test_nr; >>> +int dprint_in_signal; >>> + >>> +#if CONTROL_TRACING > 0 >> >> Who sets that CONTROL_TRACING? And if it's nobody, why are we dragging this along? > > Thanks a lot for your comment. > > CONTROL_TRACING is disabled by default. It can be enabled at build time > with -DCONTROL_TRACING=1 to capture extra debug info via ftrace for pkey > failure debugging. This patch just moves the tracing and abort-hook code > to the shared pkey_util.c, fully retaining the original opt-in debug logic. > This is based on my understanding of the existing code design, are > there any corner cases I overlooked? This is not documented anywhere, so it's rather odd. I wonder if there is a single person on earth that uses this :) -- Cheers, David