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[91.12.107.16]) by smtp.gmail.com with ESMTPSA id o19-20020a05600c4fd300b0040b45356b72sm7076879wmq.33.2023.11.28.00.09.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Nov 2023 00:09:52 -0800 (PST) Message-ID: Date: Tue, 28 Nov 2023 09:09:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v1 0/4] hugetlb: parallelize hugetlb page allocation on boot To: Gang Li Cc: Gang Li , Mike Kravetz , Muchun Song , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20231123133036.68540-1-gang.li@linux.dev> <5c0e27f2-5826-4537-a1ab-1debfab65b9a@redhat.com> <28e28c2a-e72d-a181-e87a-39cecc8c3c76@google.com> <9d5de524-28ee-4d71-9493-f77967ea213c@redhat.com> <783f8bac-55b8-5b95-eb6a-11a583675000@google.com> <13ad8d92-dc69-4088-b3db-16fade43bde3@bytedance.com> 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: <13ad8d92-dc69-4088-b3db-16fade43bde3@bytedance.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: gf8w6d6y3izwntgs4f8a9eohb779gnmb X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 70BA2180019 X-HE-Tag: 1701158996-248269 X-HE-Meta: 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 eWWuHs2o H4WqoFfhRzl4A35yXCLBocBbnLmutnoM/f+jIJZAcz8N0YejkqpkP8EqwXvbVyY9h6xNN+igneOuUAcW0amCDHAOwKVm2dUE4HCxySjFgJuJbZv5KDdE8hPgekrANWSMx/kliYTM9JYpaNNq9vG4THfFsLQ3EIJYDRZtogR+OnVHimWOql5Q1Q01gzz492COKrHv1BRX3aEogKCVmMAiEgrABE/Paj66P9ywB69iNG4nNnvPPwmBU8Tjkq4iGz7tbadopYqWCaxeAC0oExC2pN6+9FfxcWzQcsC/XLjer502KfmLYYswhIykT/aW+keGpNaxncPQnMqTNqLKYXhVn+jq6W+Kl/lNhU4ld3Vxm/ETxAVop0nnq50DGSka/EpQxi1BJ7RNNak+m6ee1BNovr75cT71uEqdGeIrwItxUlFjERHo70L22T+sNrA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 28.11.23 07:52, Gang Li wrote: > Hi David Hildenbrand :), > > On 2023/11/23 22:10, David Hildenbrand wrote: >> Sorry to say, but why is that a scenario worth adding complexity for / >> optimizing for? You don't cover that, so there is a clear lack in the >> motivation. > > Regarding your concern about complexity, this is indeed something to > consider. There is a precedent of parallelization in pgdata[1] which > might be reused (or other methods) to reduce the complexity of this > series. Yes, please! -- Cheers, David / dhildenb