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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 68A03CCFA0D for ; Wed, 5 Nov 2025 21:07:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=9uIEvkay1m9FXLKL6nNfa5AWTjTifx45z4KghX3hjOY=; b=UDmf56d5II+dKNeRJ5RwTooS3W P4cQvtm8TsuMbjtPCkB37JRS1v+xS4ugOitt/j4t4+G6gAguSo9ubtYcBt7azaesAjA62wQwH91GU GlEUnuJ/h1XhjZE9n8sg8ji/RoSyM6Sg5cawecnKZROUkrMwz2n+8+ZfMjWfWs7cvh4IJe4ssiNPl 2neoCwGzLb32A9NnZ6feI1zjrFN5PoKFWMnl/61v7k3QlN8A3L3MP7cnHRH4OyR0J0BUtTtOUe4kx 9mt3ZxyAqyAnbHF4y3y3DzAkLTNkM1mMjkOXxtQOkpKpkZ05eDzYOXdiI2zc8JU8ISdTQZcFvT69Z TUa9F4Eg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vGkiw-0000000ERvQ-1TQG; Wed, 05 Nov 2025 21:07:22 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vGkiu-0000000ERu8-4ARA for linux-arm-kernel@lists.infradead.org; Wed, 05 Nov 2025 21:07:21 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 5C71960220; Wed, 5 Nov 2025 21:07:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 798D5C116D0; Wed, 5 Nov 2025 21:07:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762376840; bh=Rz519K4RzNFN9C7FTifkrc2s4js15D9og5elk9stWlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIAbm/F3lkoEFLNp3ZLWekoviyl6iWh5KqGoC3jN5pAXOi5L/sWwbTneX1Sd1f2Kl 7zL5xqMjp906phdgY3w8G4Loes9IQaHO6Jg1QGxIqMQsUXfkKAHhFb1mPBnHUnse7X h2mJe/zjqzeSRH2cgUsMRXuxYaohkVkO/lgKbv6DBati8qhfwhtKaoi7hBjPHR4dMv 8b9ApEnTcxqi22/RVPbXSqTskMNkQjcdP1Pb7XbijRLMlZfhJpdGLk1g9A53gP9snv vGCzTSX8nxacEQ8fa/P2hESWu04ejojFuxjWPxaXBvPpcyAYLwEkBrNtfCM7qw2bfC Dnzv5/9V3vOew== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Andrew Morton , Bjorn Helgaas , Catalin Marinas , 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 25/31] sched: Switch the fallback task allowed cpumask to HK_TYPE_DOMAIN Date: Wed, 5 Nov 2025 22:03:41 +0100 Message-ID: <20251105210348.35256-26-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251105210348.35256-1-frederic@kernel.org> References: <20251105210348.35256-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Tasks that have all their allowed CPUs offline don't want their affinity to fallback on either nohz_full CPUs or on domain isolated CPUs. And since nohz_full implies domain isolation, checking the latter is enough to verify both. Therefore exclude domain isolation from fallback task affinity. Signed-off-by: Frederic Weisbecker --- include/linux/mmu_context.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mmu_context.h b/include/linux/mmu_context.h index ac01dc4eb2ce..ed3dd0f3fe19 100644 --- a/include/linux/mmu_context.h +++ b/include/linux/mmu_context.h @@ -24,7 +24,7 @@ static inline void leave_mm(void) { } #ifndef task_cpu_possible_mask # define task_cpu_possible_mask(p) cpu_possible_mask # define task_cpu_possible(cpu, p) true -# define task_cpu_fallback_mask(p) housekeeping_cpumask(HK_TYPE_TICK) +# define task_cpu_fallback_mask(p) housekeeping_cpumask(HK_TYPE_DOMAIN) #else # define task_cpu_possible(cpu, p) cpumask_test_cpu((cpu), task_cpu_possible_mask(p)) #endif -- 2.51.0