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[23.128.96.18]) by mx.google.com with ESMTP id oq7si2527011ejb.650.2020.09.25.11.31.44; Fri, 25 Sep 2020 11:32:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=I+W8P8JU; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729666AbgIYS1c (ORCPT + 99 others); Fri, 25 Sep 2020 14:27:32 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:53419 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729728AbgIYS1O (ORCPT ); Fri, 25 Sep 2020 14:27:14 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601058433; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:in-reply-to:in-reply-to:references:references; bh=yrgq/KDevcEQJ6jt8mLwCRUIhO0cbeAMHgxfCLcgTj0=; b=I+W8P8JU/yK/k3jUXiqR2vs0nw5LI1ipVmiJ3iJHYKPvhYXQNWzNOXo/77ORveDpw40ogq pmb+CRAr4pPQnGPkHmM49ucaTfUq20bkiADTD2Fe+qtS0vpwcxcwfkPD2dkAJz9xTNgsHq ip/G8IszLGEnma3IdhrycWRxa+tR4s0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-274-tQ7tu0ImMQCu12jq-NJWBw-1; Fri, 25 Sep 2020 14:27:09 -0400 X-MC-Unique: tQ7tu0ImMQCu12jq-NJWBw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 363341084C96; Fri, 25 Sep 2020 18:27:07 +0000 (UTC) Received: from virtlab719.virt.lab.eng.bos.redhat.com (virtlab719.virt.lab.eng.bos.redhat.com [10.19.153.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id 849337882D; Fri, 25 Sep 2020 18:27:05 +0000 (UTC) From: Nitesh Narayan Lal To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, intel-wired-lan@lists.osuosl.org, frederic@kernel.org, mtosatti@redhat.com, sassmann@redhat.com, jesse.brandeburg@intel.com, lihong.yang@intel.com, helgaas@kernel.org, nitesh@redhat.com, jeffrey.t.kirsher@intel.com, jacob.e.keller@intel.com, jlelli@redhat.com, hch@infradead.org, bhelgaas@google.com, mike.marciniszyn@intel.com, dennis.dalessandro@intel.com, thomas.lendacky@amd.com, jiri@nvidia.com, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, lgoncalv@redhat.com Subject: [PATCH v3 2/4] sched/isolation: Extend nohz_full to isolate managed IRQs Date: Fri, 25 Sep 2020 14:26:52 -0400 Message-Id: <20200925182654.224004-3-nitesh@redhat.com> In-Reply-To: <20200925182654.224004-1-nitesh@redhat.com> References: <20200925182654.224004-1-nitesh@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Extend nohz_full feature set to include isolation from managed IRQS. This is required specifically for setups that only uses nohz_full and still requires isolation for maintaining lower latency for the listed CPUs. Suggested-by: Frederic Weisbecker Signed-off-by: Nitesh Narayan Lal --- kernel/sched/isolation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 5a6ea03f9882..9df9598a9e39 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -141,7 +141,7 @@ static int __init housekeeping_nohz_full_setup(char *str) unsigned int flags; flags = HK_FLAG_TICK | HK_FLAG_WQ | HK_FLAG_TIMER | HK_FLAG_RCU | - HK_FLAG_MISC | HK_FLAG_KTHREAD; + HK_FLAG_MISC | HK_FLAG_KTHREAD | HK_FLAG_MANAGED_IRQ; return housekeeping_setup(str, flags); } -- 2.18.2