From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1AC62179668 for ; Wed, 10 Apr 2024 16:12:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712765563; cv=none; b=YBEomGqYXyPnhEeDgsyC/ACsJ0sWVwG8+Y3DWbi6vSDX8r823C+8VCfjSEiM9xzbawvctSYZ0A4OIRsFGmU4WfPXKB6Jspe/WCtjqrS0IN3ZxY6iM5s8RA8ufz3/lu2JYz1dWHTj4bNj0WBf9UmpGqwl9LuLGAY9wxB2UFS8l+0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712765563; c=relaxed/simple; bh=794KF9w457dqd3eHPMTyEvUxPpMn9q7a+mLANod5Fls=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dZ3YHHgLihlH4q1HLi6pYFGF9NCZmun08/Wi9ISwFQT6aeEoAjgCrMlJuWfK34Xs4f32EDL5NxYB8MTrnP5SIKhT3xABIU2yLJlS4OlrwPtF3OBZNLfhUNmfggiyEvcT3hPJST60Z05XFmRvvzA/OOrm/C5bQzherb5rYfJw154= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=I1K1PuPu; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="I1K1PuPu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1712765560; h=from:from: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:autocrypt:autocrypt; bh=f7FP/l1Gy6GyZwXpdkI/8cvwIrZ9r1QtpZsT0aPCF0w=; b=I1K1PuPuq7oEhcFa/6AjpJUfE8nqqStJgJAGN5RDdSLEn/MnEnayR4smSapcZxmUiB8Oka TBBmo8/BnchzIVaHGQV7VWumz28zus7vwrJmr1dXfFE6g8+cEPNpZT0AacadvVXtQ+NLta CaoS8sFj/KTSjOTjmOuCf0VFoMNbSgM= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-53-3ClftK38PAyEeEPlB6eDng-1; Wed, 10 Apr 2024 12:12:39 -0400 X-MC-Unique: 3ClftK38PAyEeEPlB6eDng-1 Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-416aea853e3so7894065e9.0 for ; Wed, 10 Apr 2024 09:12:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712765557; x=1713370357; h=content-transfer-encoding:in-reply-to:organization:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=f7FP/l1Gy6GyZwXpdkI/8cvwIrZ9r1QtpZsT0aPCF0w=; b=EtqaAqeoH+yOeWDh86m+pU2mQ53VtXav0BHL+sOyagCWrpW2kSfjKA/n2cv/dfXVtw UZ/LhbM6BeYjX1cG0TOvycCTWuS3o+fyFKvxqeK95ELYYshNfT59gaxbAKCo9zz2CiDx 037HfbzgpV8wTEC9zebW+tcA7puZg9V7ozqX7Z9zgW6IF7tq5THfeD0DG3L6DnXHmLeN 5zqZxQdV4TgXa+ZP1yM+lb1d2+mCEcmC1PiSV/+KZS0WgS8HVC2xuT5RNwYRxovkHr6k v6JD/rJAMRQTPsaKwH6SXc+rLmBC/gnM6VLFUT6qq9EBmthLPdvAKEeAsG4FDAWec3ic 2BDg== X-Forwarded-Encrypted: i=1; AJvYcCWzTN5dk42Ne1nG6ALd+CynidQgLx5+zIDMSNUxQOCVa5DAFTUGHhbWvH4W1wy7B1mJDxUuaCmS4MYHWpdz/jfisOQB6cpPtaCsCw== X-Gm-Message-State: AOJu0YzJKkOrsBrR5fbcGFr8kBbudq4f2SFS062qXAouDkT+OGYtrIPO QiUQU5yJZ2+/OkKeL7n5y0nRazgTEtEv9XgbLeQYU4Ab2OeKFjkUFBvK5AvtIz8mmTdwcpBSFDq nwUqIsMQEyeDBfmUrzEuQoNJQlolptEpUVfoUqNSdz1gd+6mTKvpUXaMgF2I= X-Received: by 2002:a05:600c:3b98:b0:416:2629:bbaf with SMTP id n24-20020a05600c3b9800b004162629bbafmr2517067wms.29.1712765556902; Wed, 10 Apr 2024 09:12:36 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEuJ6so+k9TVfWmCgQpetPISc9WsH7SnUYO1ZVQEGdIuP8sQQ8FoiOwj93AFq860YsfreenKA== X-Received: by 2002:a05:600c:3b98:b0:416:2629:bbaf with SMTP id n24-20020a05600c3b9800b004162629bbafmr2517045wms.29.1712765556521; Wed, 10 Apr 2024 09:12:36 -0700 (PDT) Received: from ?IPV6:2003:cb:c712:fa00:38eb:93ad:be38:d469? (p200300cbc712fa0038eb93adbe38d469.dip0.t-ipconnect.de. [2003:cb:c712:fa00:38eb:93ad:be38:d469]) by smtp.gmail.com with ESMTPSA id g13-20020a05600c4ecd00b004148d7b889asm2704218wmq.8.2024.04.10.09.12.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Apr 2024 09:12:36 -0700 (PDT) Message-ID: <1ce2fe6c-b56a-4582-a5d8-babc8fccef52@redhat.com> Date: Wed, 10 Apr 2024 18:12:34 +0200 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/shmem: Inline shmem_is_huge() for disabled transparent hugepages To: Sumanth Korikkar , Peter Xu Cc: akpm@linux-foundation.org, linux-mm@kvack.org, hughd@google.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, iii@linux.ibm.com, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240409155407.2322714-1-sumanthk@linux.ibm.com> <594dbec7-b560-44e5-a684-93dcb8ba85df@redhat.com> <29b613a8-f0d5-4f5f-adbc-d64ed8908044@redhat.com> Content-Language: en-US From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 10.04.24 18:07, Sumanth Korikkar wrote: > On Wed, Apr 10, 2024 at 05:51:28PM +0200, David Hildenbrand wrote: >> On 10.04.24 17:26, Sumanth Korikkar wrote: >>> On Wed, Apr 10, 2024 at 02:34:35PM +0200, David Hildenbrand wrote: >>>> On 09.04.24 17:54, Sumanth Korikkar wrote: >>>>> In order to minimize code size (CONFIG_CC_OPTIMIZE_FOR_SIZE=y), >>>>> compiler might choose to make a regular function call (out-of-line) for >>>>> shmem_is_huge() instead of inlining it. When transparent hugepages are >>>>> disabled (CONFIG_TRANSPARENT_HUGEPAGE=n), it can cause compilation >>>>> error. >>>>> >>>>> mm/shmem.c: In function ‘shmem_getattr’: >>>>> ./include/linux/huge_mm.h:383:27: note: in expansion of macro ‘BUILD_BUG’ >>>>> 383 | #define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; }) >>>>> | ^~~~~~~~~ >>>>> mm/shmem.c:1148:33: note: in expansion of macro ‘HPAGE_PMD_SIZE’ >>>>> 1148 | stat->blksize = HPAGE_PMD_SIZE; >>>>> >>>>> To prevent the possible error, always inline shmem_is_huge() when >>>>> transparent hugepages are disabled. >>>>> >>>> >>>> Do you know which commit introduced that? >>> Hi David, >>> >>> Currently with CONFIG_CC_OPTIMIZE_FOR_SIZE=y and expirementing with >>> -fPIC kernel compiler option, I could see this error on s390. >> >> Got it. I assume on Linus' tree, not mm/unstable? > > It's not yet upstream. >> >>> >>> However, default kernel compiler options doesnt end up with the above >>> pattern right now. >> >> Okay, just asking if this is related to recent HPAGE_PMD_SIZE changes: >> >> commit c1a1e497a3d5711dbf8fa6d7432d6b83ec18c26f >> Author: Peter Xu >> Date: Wed Mar 27 11:23:22 2024 -0400 >> >> mm: make HPAGE_PXD_* macros even if !THP >> >> Which is still in mm-unstable and not upstream. > > Not related to this commit. I tried on master branch. Thanks! Can you try with Peters patch? (ccing Peter) If I am not wrong, that should also resolve the issue you are seeing. -- Cheers, David / dhildenb