From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f53.google.com (mail-dl1-f53.google.com [74.125.82.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FD342D6409 for ; Mon, 20 Apr 2026 09:21:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776676908; cv=none; b=QBerMZOWedxoC8c51oRXzInzZOyOx2v2euynECkjsGMmV6l/yYAKBte1233OSzKArkTz9g9xslz7gIZJDPERV2V1jfVkZHvxTSKPA+EP/wIANmt1C9DgZ7PgyENhWe+Dr4rgy2/a5dUeF9qI9yD52dWGfr+jxAN3c0pOGEoFKPo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776676908; c=relaxed/simple; bh=7GOlQ53zz1TnRAQbpNYX4sg+ZF0HEcCRG+P9/rC+Zgw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M9YZtjERC1Hx622OVcPRAelGq1RLWWlIktoSfn5+Ae/vfFsA2c7s7xh3y2u9ifb+VlRPElB0QhK1gJ4mXDlOskisXpDHdVkViLac6QjBd8dd6Pym9Jfuzv3qE68xr/lqtVfcXp2e/pRphJ4SApfkwQFKKLnphCW1JXGV+gZSlQc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=l6vmfK1R; arc=none smtp.client-ip=74.125.82.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="l6vmfK1R" Received: by mail-dl1-f53.google.com with SMTP id a92af1059eb24-12c6df0b9bbso4714614c88.1 for ; Mon, 20 Apr 2026 02:21:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776676906; x=1777281706; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7GOlQ53zz1TnRAQbpNYX4sg+ZF0HEcCRG+P9/rC+Zgw=; b=l6vmfK1RGXlwHQKHcAK7EIwLVgC2GR5Ijv0v+C6ZnKDjvRpJE23xhzZH51f76hVe9p E9h8osdCpHT36oawIF5glnXqKxiO17Nl9xoKKmA087m8BVkYIKW/zPJ35skU4k/Ql6yo 2zJ9CMKKJMfd2uRLuPezrrYsYIJZCULEUW9ZA7pgyF86PQ494UXpRNliMG25C4kn27DR 0pgJQJYfxgJhadHUZy2WVZwZ1aBA2q3nQyTNi/U6UvWMxKXb0HsDS11cXeNOQlYZjXlt cPIwQonb1/38ygU/7Wz79gVzFDB4K9U2zhZ8XWtRVuQvZEmDqxEiyjaLh0nZJ5VGTq4U 3K2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776676906; x=1777281706; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=7GOlQ53zz1TnRAQbpNYX4sg+ZF0HEcCRG+P9/rC+Zgw=; b=Fitv0FKAXsf/J2i/c4ANkIKhUoYLl0PNMaUm+duyCd0NPG3iL4Z39+Rbrs84h64vBB sn635rgj4+IkackyR+QTCPPhRSwq6svfKsDLjMqERRl78VEbnpCNhN0R795Y6wvZqtcX SbMnS2NyFBF2FiXWtOSHhZraKy0kJt3Wr4eWD1m1l1yV01uu73jkobE44h9QcEvlXmLh wWTf+m31vA5sPRU9+ZlQm0kROGO0QEaMrYopyrWCzOzQK4wKH9bReYgXz0ZhhJyXMUyP s9zuurlWQ+nSsynAUNwJkzQJocNh9Qa3J7OcQ0K9HkF3eYFxjAF6CU72ZsifKtY84Cve BXeA== X-Gm-Message-State: AOJu0YwfSYVoU9gwtgVtLfgwwQP+oIWiUOzGL1gZH+nAeLDEwsPhuaME d0CJjyz6cZtltECw/5tagH+yVsIf0D4X7PbYObDq67+PNhzznl2xYf8ocu4K8oyfovg= X-Gm-Gg: AeBDietpNcsaNKoM9KterTs5OshaTh5s+66rXfml1s63ptpNkfvU3R/nNgSd8RQnnAw v8IA5sjDHooAUV9pGPft74hdvSXg3Zl4cNn5D9K9Jj62vGCMKZbhnvUunFUXld3eHCRbh4ZEg3Y uj57UkbZu+vYGQupUSaLNdJ0nRcXDRugX1iJxuFd9bjFwcazIC2H9TbhMUX4DXmVqB9HZRXuZub EJUG4VDWirBeTkORD6Wv8g1+WtdkqZ2BKdfPpaCtPA3oWUJ1p1BmwSxD7o2luq3AyeZb1suKtCk gtJVlBD5jDInFd2sSuqOR+uVPLiX5Aa8u1nQsDRDZb6eG6SUgMBom6l6CMSuAyznKth9BWRM9Pw QBeetpEg71Wpij2tDkvmDA/G6sHuWiQ7R7Fofouj1Kn3Bf2Vz5vHqhHD1ri+sVlPAV5c4Fy/1Gj 4EM8tCop6DB+JoDtg2gyWSyLvRjWogK6qXgBqEtZDO+uttlA== X-Received: by 2002:a05:7022:1715:b0:12b:ee8a:19ae with SMTP id a92af1059eb24-12c73f6c4bcmr3340493c88.7.1776676906185; Mon, 20 Apr 2026 02:21:46 -0700 (PDT) Received: from localhost.localdomain ([74.48.213.230]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2e53d2cfd3esm13480087eec.21.2026.04.20.02.21.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2026 02:21:45 -0700 (PDT) From: Qiliang Yuan To: Frederic Weisbecker Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 01,03,07,08,09/12] DHM Architecture and Cpuset Integration Date: Mon, 20 Apr 2026 17:21:23 +0800 Message-ID: <20260420092123.240974-1-realwujing@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260415100246.654321-1-frederic@kernel.org> References: <20260415100246.654321-1-frederic@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit I agree that extending the existing "isolated" partition in cpusets is a more integrated approach. For v3, I will explore a new mode for the cpuset.cpus.partition interface to support dynamic nohz_full/nocb transitions. On Wed, 15 Apr 2026 12:39:09 +0200, Frederic Weisbecker wrote: > We plan to assume that the CPU is offline while updating HK_TYPE_KERNEL_NOISE > through cpusets. So you shouldn't need to care about offlining here. The CPU offline logic in the RCU reconfiguration will be streamlined, relying on the state managed by the cpuset/hotplug core. On Wed, 15 Apr 2026 12:50:03 +0200, Frederic Weisbecker wrote: > Unbound workqueues and kthreads are already handled by cpuset isolated > partitions. Affinity management for workqueues and domains will be removed from the DHM patches, as these are indeed already addressed by the isolated partition logic. Best regards, Qiliang --- To: Waiman Long Subject: Re: [PATCH v2 01/12] sched/isolation: Use cases for fine-grained isolation Date: Mon, 20 Apr 2026 16:15:00 +0800 Hi Waiman,