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 532F9CCD183 for ; Mon, 13 Oct 2025 20:35:20 +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=YOy/s7wrLb9DM1A8QI3vlnpR2K iNsfrleqg5M6z3jSirFdApx+VML+W2+BBH//xAQBj+5m6eCEpyC5S3xokUMAU61/jzksu/LWDqGwz riBDjFUwuoYLFV/PAA+CG+dp0pvTOgbZYA/ofH0B41RYMEPkkBfeqGrRNffRA83P7K+Ccwck3lCac qJpWrnjGcwTnuBzKPmzrPD1cnlOyL4LfPTIgHk6gZL3RJqojFrB7D8YUAetj9YY4QRL0zVPmuWaew 5AcTNKBKHTgXF2YYgFPw8ViUGono8+ODJzTQL68ScwH+F8dkDo2k581pcw6ot4TQmJLie8izjp6TY epUtEEuA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8PGE-0000000EPXI-1pdl; Mon, 13 Oct 2025 20:35:14 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8PGB-0000000EPVS-4BId for linux-arm-kernel@lists.infradead.org; Mon, 13 Oct 2025 20:35:13 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9C5C848C28; Mon, 13 Oct 2025 20:35:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EE4FC4CEE7; Mon, 13 Oct 2025 20:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760387711; bh=Rz519K4RzNFN9C7FTifkrc2s4js15D9og5elk9stWlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jrf+Kg2/DIvGCNfyCdPFH1ePE8ZtLXxlazjx5t7J+NDYTQdXxH1vJ2Z5Scm1VwP5a SFKQYCjcRmfVTw9Fxi/xNljzr9UonGFOBfXxE7QbiWus82J7VAHAAxWimL73PWy8sp KQUXmznsb7ngzcRXbeFT44rPWlDAU+23nOBfivg8Tdib55Ha8FFtUFqYb4WhKj7Wdb xqn7qGyWBJJwWe38QLQztBFP0hxmcWWMmsct/VYNHEJMPHbsrHisH8W6evGfhEbgWE qrozZxBzKyToJTV/iTb78znyKyHVL52oqRZ4h7NX0lZJzJVoUCRjEH6fXx7vkhe3gn JrvAZ+P+clgQQ== 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 25/33] sched: Switch the fallback task allowed cpumask to HK_TYPE_DOMAIN Date: Mon, 13 Oct 2025 22:31:38 +0200 Message-ID: <20251013203146.10162-26-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013203146.10162-1-frederic@kernel.org> References: <20251013203146.10162-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251013_133512_065689_BBEB6586 X-CRM114-Status: GOOD ( 11.20 ) 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