{"id":21626,"url":"https://patchwork.libcamera.org/api/covers/21626/?format=json","web_url":"https://patchwork.libcamera.org/cover/21626/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","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/people/117/?format=json","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/series/4699/?format=json","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":"","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 ;\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 ;\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 ;\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 ","To":"libcamera-devel@lists.libcamera.org","Cc":"Harvey Yang ","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":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"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(+)"}