From nobody Thu Apr 2 03:25:21 2026 Received: from mail-dy1-f179.google.com (mail-dy1-f179.google.com [74.125.82.179]) (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 6EBCA339853 for ; Wed, 25 Mar 2026 09:10:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774429807; cv=none; b=aQ1TrpayIsO+zdzhuhSApNE6ggnE5bWxJAPfEZohkT5hoO2kN3Oo8Xmov4Sf6uEqDUzszK6YsZDBxN/pAG6NNTvjk+tEniKBP2jJI8p+ccGiAXHEnPe0JRwElg7ZXIZ/YDrguxwNeypg5zR+I4oXXWM0nkb7bdptGZGNexHOa44= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774429807; c=relaxed/simple; bh=5lK/iDCMs0xrzM+ncf/IEMsxq+MhQJcZU0X4KxOHObw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OPL1Mm6bHKzxhuHFzXKzEuBVK9w1wlHPra9OskEKps90L3BBPHH8glzdh99aK1V0Ffg45Id4Bpw8YLuqLunJCpbmQ6qd/yQamOFO8HEAZDDy6MlVi94WLUxnKq5G8zEPt1RD0QxCfD2gNLz+QnPYrVRDhxtK4dAqpb3sGg049Q4= 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=N5Go1fBK; arc=none smtp.client-ip=74.125.82.179 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="N5Go1fBK" Received: by mail-dy1-f179.google.com with SMTP id 5a478bee46e88-2ba895adfeaso2409908eec.0 for ; Wed, 25 Mar 2026 02:10:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774429806; x=1775034606; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=/9UY5bvoYUVv1VU3Mf2W4jpyCEGASZWHJe/emL8ca0U=; b=N5Go1fBKA0C8WAFBmj0S4YWwHL4TtmzDsPylU5jL6MKCA17I3Af28FR8rfY1A2THqe ODlrHKjFRIqnbKQu7BpnaGJWSTLM0VPWHSfj/oan7mJf/3GWoiKb4zKnHpi/cFDiJh4C spycsFoA+8szOdJa3uOZ38g10KGiFbLLaJZOUg/9AwkSovkOXTleJcslOIKB6qDgJEfL tHB6bju0qdHIwB/QkipBLwKd8A37F/aI9fm2dz3IujjcSKtJvcaPHrecaoEe9U/hkTY1 l3MsZJWPJgdsMDi46BV++nuhDKQXzYHdRuD6kVqOMj9VvzZ2g2pHzrXgxGTwMu/mElUk hpwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774429806; x=1775034606; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=/9UY5bvoYUVv1VU3Mf2W4jpyCEGASZWHJe/emL8ca0U=; b=ea3fUruvk9qY+MuHahxp2uSiLFFxWrAo0HBfEDeDvhjtUeixsGwhms9zKumJ/UA1yo fysJqAquw+MirssGLq5DMxHamIP9JnFbm7pwFfB9Y87CAkxFZG0RjWh1L/miVB+e6/Li QXU1pAi0fOUsfKKrpuX2sj3a/FATPHwvYdKDJ2kC57KrMFYzaY56TChesqFEG5ggDa/v 8vp9PkMl5R2VsMzuTmRQa4UAKqkaRX3G2VSHo60YH5OrJrHPIYbPvsAnqjfQd3LKc5qy uXBf7jYVS4caxxJoqOSvDBFx7SprJKCeevrV6A77pUVPYgdf8XDZbNSrXu/jJPCbeQAo 9QPg== X-Gm-Message-State: AOJu0Yw91mOLxm5738fauWLgbY5kYdRDsXBs/2eM2lToYN9jgpuRH5pg 3a82Viw2SuWZaacs0jCllWEUDzuZ6tKdFWIBOX3MLPBdepdBbdXIF2KF X-Gm-Gg: ATEYQzxiz/yz0np3/vvoR3ZWxvCrsGw4sq/qGAYqQMqNVuVs6Nu1GgVBoOui/HVTnOh 8DmqqO7ecnNUANGjvxXMpk3ccEOwSHQzwM7qKjhPE/QtLDkUyNLnD3ZPdQZa77xoVFlhiYwvyTl E7K4AZEMG4HN5VUviP/0/YZ/yQi8rlW2Qp9M/XHk3NmueIJlyb/7ZoesBtDQZ3hZzyhBR6uGfAp N0NpKiPX+F9GopCGftbDBtKrYf9izB4Y5qm3o6ucd5NAJfdl6OWjaGDGCbHpzHLl+tNLSv2rR9Y WHvBlCG2Nwg4RG8cXRcC6xQPzJX2EQnI2GnWBUgzy/7+q7kAcw9WSoG1tpuesT276WxldbluAWS 5f1vyIOxbKLJiuFRtpNTlY7O9Dn89GRN1sIujECuF4zIJUajIPWJH8angpgBysL4gD2F7NbjkZf wlOIvrfPW7+GcpIU3a X-Received: by 2002:a05:7301:5781:b0:2be:1779:3289 with SMTP id 5a478bee46e88-2c15d4cf79fmr1292448eec.35.1774429805106; Wed, 25 Mar 2026 02:10:05 -0700 (PDT) Received: from wujing. ([74.48.213.230]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2c159e25dc7sm2786389eec.27.2026.03.25.02.09.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 02:10:04 -0700 (PDT) From: Qiliang Yuan Date: Wed, 25 Mar 2026 17:09:34 +0800 Subject: [PATCH 03/15] sched/isolation: Separate housekeeping types in enum hk_type Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260325-dhei-v12-final-v1-3-919cca23cadf@gmail.com> References: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> In-Reply-To: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Thomas Gleixner , "Paul E. McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Tejun Heo , Andrew Morton , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Anna-Maria Behnsen , Ingo Molnar , Shuah Khan Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Qiliang Yuan X-Mailer: b4 0.13.0 Most kernel noise types (TICK, TIMER, RCU, etc.) are currently aliased to a single HK_TYPE_KERNEL_NOISE enum value. This prevents fine-grained runtime isolation control as all masks are forced to be identical. Un-alias service-specific housekeeping types in enum hk_type. This separation provides the necessary granularity for DHEI subsystems to subscribe to and maintain independent affinity masks. Signed-off-by: Qiliang Yuan --- include/linux/sched/isolation.h | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolatio= n.h index 9df55237d3901..6ec64eb3f8bcb 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -10,21 +10,18 @@ enum hk_type { HK_TYPE_DOMAIN, HK_TYPE_MANAGED_IRQ, - HK_TYPE_KERNEL_NOISE, + HK_TYPE_TICK, + HK_TYPE_TIMER, + HK_TYPE_RCU, + HK_TYPE_MISC, + HK_TYPE_WQ, + HK_TYPE_KTHREAD, HK_TYPE_MAX, =20 - /* - * The following housekeeping types are only set by the nohz_full - * boot commandline option. So they can share the same value. - */ - HK_TYPE_TICK =3D HK_TYPE_KERNEL_NOISE, - HK_TYPE_TIMER =3D HK_TYPE_KERNEL_NOISE, - HK_TYPE_RCU =3D HK_TYPE_KERNEL_NOISE, - HK_TYPE_MISC =3D HK_TYPE_KERNEL_NOISE, - HK_TYPE_WQ =3D HK_TYPE_KERNEL_NOISE, - HK_TYPE_KTHREAD =3D HK_TYPE_KERNEL_NOISE }; =20 +#define HK_TYPE_KERNEL_NOISE HK_TYPE_TICK + struct housekeeping_update { enum hk_type type; const struct cpumask *new_mask; --=20 2.43.0