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 B2BEEE7545E for ; Wed, 24 Dec 2025 13:49:38 +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=6O6rmYJG+Tl4L6LWgIlJj4N9PKLZ9AXfFtLpQTmd/fo=; b=PDjfNp9QjA6xLgrZGznhE6+WmP eqsB0rRrES3p4cn5Ftte8F/CEYy3nHydvfGRVk3awg/7BSkV43Mj6XyWBBOsVW53iw0fz+L2Bgok2 KTRiUmlAZxRyPhHMeL4hgN4hsWBXkdb6GEVBLU9HX5ITZM8usaSUryg9Wl1EZuCGnXD/OESZMKSLr fB+KvyMOuHrmwD6SS/YtjljVZ+RU+qzCujcfDsF7EFswo5dtY3qd7hEc78EBvEpNwVH61RKRZXiI3 4uU6gNX+bhKq1Q0YuQ31bU+7Tx6yBojHsGhbhksfMV4iEBdjHVLnQJgo2nAZHso3P7HL8XNCkprAD kt+Uy1AA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vYPF8-0000000Gu8A-2u4J; Wed, 24 Dec 2025 13:49:34 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vYPF6-0000000Gu52-1Lqz for linux-arm-kernel@lists.infradead.org; Wed, 24 Dec 2025 13:49:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id BD79B600AD; Wed, 24 Dec 2025 13:49:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7775BC4CEFB; Wed, 24 Dec 2025 13:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766584171; bh=j8MGHYhCs1J4x6C+On5nxQzbEbcFY8oG1AQUgHvIMQ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ug4foumUQK9xRmYsoDji03kHgYZzKPVPSgWqmGK3NJ+Z7jjoOn8Vl3zo1uGnRUXGG t6pgfWJPN83UUgWKg2TyarSyKH7GVLWJ7DnO6XlRJCW1HvygjPb5Odk4vZOFcuFaxF ejKKSs4ytrwCFSO3OsW1nuuiExbDBVHHm1MbHVHPYuucbzxQNkzgDNPRB8SOBm8mD4 NYpyM32QqQIAes3ebGOpL0dm8GBsBikiUEcOMzBiAv9d1Ndn85XsDYQGLAzJbmA9X+ c1SijNhPjuzP3mjTbN/GBf9j5oqsoAQJcgWW0zk1XA3Fyda5ziOczDh16D87/Hw80f OKeLK+2485YKQ== 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 28/33] sched: Switch the fallback task allowed cpumask to HK_TYPE_DOMAIN Date: Wed, 24 Dec 2025 14:45:15 +0100 Message-ID: <20251224134520.33231-29-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-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 -- 2.51.1