From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A75C4E75453 for ; Wed, 24 Dec 2025 13:46:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1C2046B0098; Wed, 24 Dec 2025 08:46:18 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 182CA6B0099; Wed, 24 Dec 2025 08:46:18 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 06E4C6B009B; Wed, 24 Dec 2025 08:46:17 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id E8FE66B0098 for ; Wed, 24 Dec 2025 08:46:17 -0500 (EST) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id BB889C08C6 for ; Wed, 24 Dec 2025 13:46:17 +0000 (UTC) X-FDA: 84254488794.02.D5B0F9A Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf04.hostedemail.com (Postfix) with ESMTP id 3A3A440005 for ; Wed, 24 Dec 2025 13:46:16 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=htqHmciL; spf=pass (imf04.hostedemail.com: domain of frederic@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=frederic@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1766583976; a=rsa-sha256; cv=none; b=coC7KGrgD3bEqUZKeOjBbt9To5Fs8/U7TfrlHIdsXpMcub67R1SXFVSVGsKBDzBhgldIlh 0xZwbZJ5t6ZsUbdhFOjSl6G3jNWscqrbfjZAPQArjwNGhPur0eEwHFGXoDPKEtoR39A6hy DT0GDyaSznVPtVq50frCUlapgjQgo6Q= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=htqHmciL; spf=pass (imf04.hostedemail.com: domain of frederic@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=frederic@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1766583976; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=RfMR/Z1RHvJoXzr86CrgTofptafDgStvJi/kxysDsOY=; b=x/aMjo9TyaT59xZafvzxg5a4VJfljK4sZVUm7AE/mz1tOdWwB6NRKaNPxzvOex75q8oyh3 wL1npqX3cOtqcBWLd8sUVtf1qIiWpdCIzQkKAYsHyHrVMeZYkNNXoNNrcHxfyBmlMwgvC5 +dV1k7kUjlL9VyNrd1lKdm2SvvgZ0II= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id C13EE60135; Wed, 24 Dec 2025 13:46:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6704AC116D0; Wed, 24 Dec 2025 13:46:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766583975; bh=oYIDljVusPRyc5ygPH/YiE7a9Fhd9e2pU1qivro5W4A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=htqHmciLhDIlwaAafpUU2VX1XDfcCQEG/G/wYBGqRb079YKOzQ4bLKuDSO20ILSbT x2ty2FrkhGcjZGmNhcNmU/XB8AIWGPf/OFBLStI85bMZdQFAmzFShHb3qUa+DBeXsL 5uUPDkZhhIXRn+GO1UNkvMkdEkkexiOP29/cwdP3Gid83GGZU3YG/Q0/T9P1LqjAKU F1HAzDo2rY5jq99eUCywOkGr05yck1Ixww1LbBMc0+QCaK7qNicMaB53+WM1SMi1LB MZmedPl3zj6CvYqKtcScMTcR2Amms6hosgoprArwalGEXKya77EoHgIlGEufV9r9EB qCBxAiEKpDJQQ== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Andrew Morton , Bjorn Helgaas , Catalin Marinas , Chen Ridong , Danilo Krummrich , "David S . Miller" , Eric Dumazet , Gabriele Monaco , Greg Kroah-Hartman , Ingo Molnar , Jakub Kicinski , Jens Axboe , Johannes Weiner , Lai Jiangshan , Marco Crivellari , Michal Hocko , Muchun Song , Paolo Abeni , Peter Zijlstra , Phil Auld , "Rafael J . Wysocki" , Roman Gushchin , Shakeel Butt , Simon Horman , Tejun Heo , Thomas Gleixner , Vlastimil Babka , Waiman Long , Will Deacon , cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 05/33] sched/isolation: Save boot defined domain flags Date: Wed, 24 Dec 2025 14:44:52 +0100 Message-ID: <20251224134520.33231-6-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251224134520.33231-1-frederic@kernel.org> References: <20251224134520.33231-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 3A3A440005 X-Rspamd-Server: rspam04 X-Stat-Signature: yrmxcidkpr5fu9ggf8ufm4huymd4sd43 X-HE-Tag: 1766583976-637676 X-HE-Meta: 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 ndy8gnDi MsOsBjNTHLYB1aw+RHHmxpgOkprzTMXRdCYjmqTwFfRuIADWPw60bxWysGrvSs9zNP/GxAvIpK7z5OEsmBkO7XeycOkGzCiRJCOgcNW3VTZldZiWTb0VJ4hiNz8WSADqNfSUrq8ZQtDy4euFo8tm8bm3fEycF/bFDbuuCSjN3vfI38ytNtDOsVjX9TY0kk5d30NMmr0ZxPqle9wiYESOkOSWdNXh/7hDGAR2Fn4KZoby9Z6Ozi5VWV8kKS/RO3XllpHs89VwS4F/fF3sywzaTt1CKvVRJEnM4M77K X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: HK_TYPE_DOMAIN will soon integrate not only boot defined isolcpus= CPUs but also cpuset isolated partitions. Housekeeping still needs a way to record what was initially passed to isolcpus= in order to keep these CPUs isolated after a cpuset isolated partition is modified or destroyed while containing some of them. Create a new HK_TYPE_DOMAIN_BOOT to keep track of those. Signed-off-by: Frederic Weisbecker Reviewed-by: Phil Auld --- include/linux/sched/isolation.h | 4 ++++ kernel/sched/isolation.c | 5 +++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index d8501f4709b5..109a2149e21a 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -7,8 +7,12 @@ #include enum hk_type { + /* Revert of boot-time isolcpus= argument */ + HK_TYPE_DOMAIN_BOOT, HK_TYPE_DOMAIN, + /* Revert of boot-time isolcpus=managed_irq argument */ HK_TYPE_MANAGED_IRQ, + /* Revert of boot-time nohz_full= or isolcpus=nohz arguments */ HK_TYPE_KERNEL_NOISE, HK_TYPE_MAX, diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 3ad0d6df6a0a..11a623fa6320 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -11,6 +11,7 @@ #include "sched.h" enum hk_flags { + HK_FLAG_DOMAIN_BOOT = BIT(HK_TYPE_DOMAIN_BOOT), HK_FLAG_DOMAIN = BIT(HK_TYPE_DOMAIN), HK_FLAG_MANAGED_IRQ = BIT(HK_TYPE_MANAGED_IRQ), HK_FLAG_KERNEL_NOISE = BIT(HK_TYPE_KERNEL_NOISE), @@ -239,7 +240,7 @@ static int __init housekeeping_isolcpus_setup(char *str) if (!strncmp(str, "domain,", 7)) { str += 7; - flags |= HK_FLAG_DOMAIN; + flags |= HK_FLAG_DOMAIN | HK_FLAG_DOMAIN_BOOT; continue; } @@ -269,7 +270,7 @@ static int __init housekeeping_isolcpus_setup(char *str) /* Default behaviour for isolcpus without flags */ if (!flags) - flags |= HK_FLAG_DOMAIN; + flags |= HK_FLAG_DOMAIN | HK_FLAG_DOMAIN_BOOT; return housekeeping_setup(str, flags); } -- 2.51.1