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{ "id": 21626, "url": "https://patchwork.libcamera.org/api/1.1/covers/21626/?format=api", "web_url": "https://patchwork.libcamera.org/cover/21626/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20241015065533.356466-1-chenghaoyang@chromium.org>", "date": "2024-10-15T06:54:35", "name": "[v4,0/1] Add thread affinity", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/1.1/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "mbox": "https://patchwork.libcamera.org/cover/21626/mbox/", "series": [ { "id": 4699, "url": "https://patchwork.libcamera.org/api/1.1/series/4699/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4699", "date": "2024-10-15T06:54:35", "name": "Add thread affinity", "version": 4, "mbox": "https://patchwork.libcamera.org/series/4699/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/21626/comments/", "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 56AEEC0F2A\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 15 Oct 2024 06:55:44 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id CA29265382;\n\tTue, 15 Oct 2024 08:55:42 +0200 (CEST)", "from mail-pf1-x435.google.com (mail-pf1-x435.google.com\n\t[IPv6:2607:f8b0:4864:20::435])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 7F770633C9\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 15 Oct 2024 08:55:40 +0200 (CEST)", "by mail-pf1-x435.google.com with SMTP id\n\td2e1a72fcca58-71e5130832aso1626393b3a.0\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 14 Oct 2024 23:55:40 -0700 (PDT)", "from chenghaoyang-low.c.googlers.com.com\n\t(199.211.81.34.bc.googleusercontent.com. [34.81.211.199])\n\tby smtp.gmail.com with ESMTPSA id\n\t98e67ed59e1d1-2e392f75624sm790215a91.53.2024.10.14.23.55.37\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tMon, 14 Oct 2024 23:55:38 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=chromium.org header.i=@chromium.org\n\theader.b=\"TgZY23bO\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=chromium.org; s=google; t=1728975338; x=1729580138;\n\tdarn=lists.libcamera.org; \n\th=content-transfer-encoding:mime-version:message-id:date:subject:cc\n\t:to:from:from:to:cc:subject:date:message-id:reply-to;\n\tbh=gUZ7Ip67h1E9hIH1zeKVZ8IfGG1qkzOmxPj3yXslg8k=;\n\tb=TgZY23bOGqjInIAsvQRl3QZ+RVEyzMI+dY2uD66zuQmlbJsqIVqeaZ/rZGAcgmu071\n\t9x2H8djf3ZvCNe38hC0wnreFNSmvS/M/2t2hofsaWi0EeVKnhlXIz3COnsmUBUHvekLV\n\tgXghCkMOmxzeCnapDSjMBEKuNWUGJe0ZlN6ew=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20230601; t=1728975338; x=1729580138;\n\th=content-transfer-encoding:mime-version:message-id:date:subject:cc\n\t:to:from:x-gm-message-state:from:to:cc:subject:date:message-id\n\t:reply-to;\n\tbh=gUZ7Ip67h1E9hIH1zeKVZ8IfGG1qkzOmxPj3yXslg8k=;\n\tb=E5jI0gBf4+61iC221ZTxbQvI4Co0GQKR9BOPBl13PUOevCLRb/KByE8tQ0v6WBrrLi\n\tbFC1qrcvRX5MukaR0JgIpvTykRZ9jdP7fD+nMD0aR5cdvw2o8r7xIcZiic1ADqiFe/nl\n\tbJynY15soH2kXhic7fq1PWmZMXvCEgjk/nkPY0LdDMHUvwjd1OAM6eRA4KoLGfe3lIHr\n\thxZtUEPqPEoAvWitFiZzRE5nNWaBYP6AwbOwpoQ/Qs4gJEmyylpCxbVm8ah9q4nmfPuC\n\tcWPMQ5Cr3D11YHyfeXh0ncnNDUEyDwz5kCi3WJhbYIXe8D3WxpHGWIRlDTVgKx/7OX7v\n\t/m7w==", "X-Gm-Message-State": "AOJu0YzRUCDl/kNbLSWaPTYV7PR1NuIz6twhQQSKvpZEtpy4mkGmmB0Q\n\tvV8ZRIc+3iLun+qom5WLZ0az/hYuW9Tcoy/nKGm4qT/Ict9ZisTsFXj/Y69C4vf7ceAWQcRJMNM\n\t=", "X-Google-Smtp-Source": "AGHT+IGzxwCljXOIbuIVSAe17WbwHpfm6JJGjTQ2BtVXqI+vUoxXycZPCe2GTFyOF+ABfWWRBlCL1Q==", "X-Received": "by 2002:a05:6a20:c797:b0:1d3:5208:1ea6 with SMTP id\n\tadf61e73a8af0-1d8c96ba5femr16287061637.45.1728975338543; \n\tMon, 14 Oct 2024 23:55:38 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>", "Subject": "[PATCH v4 0/1] Add thread affinity", "Date": "Tue, 15 Oct 2024 06:54:35 +0000", "Message-ID": "<20241015065533.356466-1-chenghaoyang@chromium.org>", "X-Mailer": "git-send-email 2.47.0.rc1.288.g06298d1525-goog", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi folks,\n\nThis patch adds a method to set thread affinity, which is needed to\nensure performance in mtkisp7 pipeline handler and IPA.\n\nThis passes gitlab pipeline:\nhttps://gitlab.freedesktop.org/chenghaoyang/libcamera/-/pipelines/1290319\n\nv4:\n- Use `sizeof(data_->cpuset_.value())`.\n\nv3:\n- Keep the cpu indices in ThreadData.\n\nv2:\n- Check cpu indices within [0, `std::thread::hardware_concurrency()`).\n- Limit max size of cpus to be CPU_SETSIZE.\n\nBR,\nHarvey\n\nHan-Lin Chen (1):\n libcamera: add method to set thread affinity\n\n include/libcamera/base/thread.h | 5 ++++\n src/libcamera/base/thread.cpp | 53 +++++++++++++++++++++++++++++++++\n 2 files changed, 58 insertions(+)" }