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{ "id": 21607, "url": "https://patchwork.libcamera.org/api/covers/21607/?format=api", "web_url": "https://patchwork.libcamera.org/cover/21607/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/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": "<20241014070000.658023-1-chenghaoyang@chromium.org>", "date": "2024-10-14T06:58:55", "name": "[v3,0/1] Add thread affinity", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "mbox": "https://patchwork.libcamera.org/cover/21607/mbox/", "series": [ { "id": 4693, "url": "https://patchwork.libcamera.org/api/series/4693/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4693", "date": "2024-10-14T06:58:55", "name": "Add thread affinity", "version": 3, "mbox": "https://patchwork.libcamera.org/series/4693/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/21607/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 9ED64C32F4\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 14 Oct 2024 07:00:10 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7DB4F6537C;\n\tMon, 14 Oct 2024 09:00:09 +0200 (CEST)", "from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com\n\t[IPv6:2607:f8b0:4864:20::42e])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 05A1865369\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 14 Oct 2024 09:00:07 +0200 (CEST)", "by mail-pf1-x42e.google.com with SMTP id\n\td2e1a72fcca58-71e52582d0bso1069319b3a.3\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 14 Oct 2024 00:00:06 -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\td2e1a72fcca58-71e675a9566sm1230461b3a.54.2024.10.14.00.00.03\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tMon, 14 Oct 2024 00:00:04 -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=\"Y04OncX8\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=chromium.org; s=google; t=1728889205; x=1729494005;\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=53t7bexCnn4Q4iy1KyiyCKq1eCfD03Bd+FipL81AFcc=;\n\tb=Y04OncX8omnDoIMYqgc8OIJoLYEKPMi8fpDChFaf9UJ7h8eB5ARTdATjUyheVyXnZj\n\tFs9Lu6/dwOyVodcu8Xb7yNeU/Q9o20m4tPFcmCvBONeCm/tcLdzE6x/+WONCSWOVa3QM\n\tnVc6T3vx/aIZgankiQZtPN+Z2Nd9i9THc+jhg=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20230601; t=1728889205; x=1729494005;\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=53t7bexCnn4Q4iy1KyiyCKq1eCfD03Bd+FipL81AFcc=;\n\tb=xCUg5bucTKafAGqV3MFsspSRjzdM7ZLOlJapx5/fkQd2giOcz+Zf7B7TmwKY8+TEWZ\n\tZ8B8a0CQrK0VDgaqlJcODE3oZTPiHooPQcjnehpwZPRrGdJ61mjBQR6zFgGcxF/vk6ui\n\tSFT2ahrGR35Fja1qC/hFbLgGYsRJ2tCevujf/HrN7b/tB/oCuq1DQvU5h4PAbPDxkadx\n\tdv1D7EUibMTyZ2k6LW+QcINdorbgMeSsP0NPGy2YVeeW9cW4gh+YB0o/tzQKGuDA1CjL\n\txHwlL06QtxVGA+c4+MjckhHKMSaYwok6bpITGrJehBKjrcWMW83ghkF7PmV+b0WaunPt\n\t2AEw==", "X-Gm-Message-State": "AOJu0Yxe887MgUmvJE5HKFNQuzDmQ5cKN3IlDRLWZvM0TzjM4/iBIH4v\n\t+XWcAv0RHbQrPVCfeR1jSxw1ubKW8/RhllemmgzG3IrZcTb6Eh+VYBaop743fmM/+zdvYn7hOT8\n\t=", "X-Google-Smtp-Source": "AGHT+IF5l8qLWeDHdlXDj4DEmNXn6WGG0wMXO9zzQlYqilQ7wWicJEv/UP244LH0mPIZeFBgwbhOzQ==", "X-Received": "by 2002:a05:6a00:181d:b0:71e:104d:6316 with SMTP id\n\td2e1a72fcca58-71e4c1bfb5cmr10592440b3a.21.1728889205039; \n\tMon, 14 Oct 2024 00:00:05 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>", "Subject": "[PATCH v3 0/1] Add thread affinity", "Date": "Mon, 14 Oct 2024 06:58:55 +0000", "Message-ID": "<20241014070000.658023-1-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/1289422\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\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 | 52 +++++++++++++++++++++++++++++++++\n 2 files changed, 57 insertions(+)" }