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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E08EC1B0F1 for ; Wed, 20 Jun 2018 00:25:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B4242083A for ; Wed, 20 Jun 2018 00:25:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B4242083A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zytor.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754198AbeFTAZJ (ORCPT ); Tue, 19 Jun 2018 20:25:09 -0400 Received: from terminus.zytor.com ([198.137.202.136]:37947 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752915AbeFTAZF (ORCPT ); Tue, 19 Jun 2018 20:25:05 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id w5K0P0wO3299351 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 19 Jun 2018 17:25:01 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id w5K0P0KG3299348; Tue, 19 Jun 2018 17:25:00 -0700 Date: Tue, 19 Jun 2018 17:25:00 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Reinette Chatre Message-ID: Cc: tglx@linutronix.de, mingo@kernel.org, reinette.chatre@intel.com, linux-kernel@vger.kernel.org, hpa@zytor.com Reply-To: hpa@zytor.com, linux-kernel@vger.kernel.org, reinette.chatre@intel.com, mingo@kernel.org, tglx@linutronix.de In-Reply-To: <9bdcbce670d1ca6067d6a0f2d1c27297901bc56a.1527593971.git.reinette.chatre@intel.com> References: <9bdcbce670d1ca6067d6a0f2d1c27297901bc56a.1527593971.git.reinette.chatre@intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/cache] x86/intel_rdt: Introduce pseudo-locked region Git-Commit-ID: 165371cf12415680ee4833bae63d08b2a4475ea4 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 165371cf12415680ee4833bae63d08b2a4475ea4 Gitweb: https://git.kernel.org/tip/165371cf12415680ee4833bae63d08b2a4475ea4 Author: Reinette Chatre AuthorDate: Tue, 29 May 2018 05:57:48 -0700 Committer: Thomas Gleixner CommitDate: Wed, 20 Jun 2018 00:56:35 +0200 x86/intel_rdt: Introduce pseudo-locked region A pseudo-locked region is introduced representing an instance of a pseudo-locked cache region. Each cache instance (domain) can support one pseudo-locked region. Similarly a resource group can be used for one pseudo-locked region. Include a pointer to a pseudo-locked region from the domain and resource group structures. Signed-off-by: Reinette Chatre Signed-off-by: Thomas Gleixner Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: vikas.shivappa@linux.intel.com Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/9bdcbce670d1ca6067d6a0f2d1c27297901bc56a.1527593971.git.reinette.chatre@intel.com --- arch/x86/kernel/cpu/intel_rdt.h | 64 ++++++++++++++++++++++++++--------------- 1 file changed, 41 insertions(+), 23 deletions(-) diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index c9b8d3d1d413..02ae088fd745 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -122,6 +122,20 @@ struct mongroup { u32 rmid; }; +/** + * struct pseudo_lock_region - pseudo-lock region information + * @r: RDT resource to which this pseudo-locked region + * belongs + * @d: RDT domain to which this pseudo-locked region + * belongs + * @cbm: bitmask of the pseudo-locked region + */ +struct pseudo_lock_region { + struct rdt_resource *r; + struct rdt_domain *d; + u32 cbm; +}; + /** * struct rdtgroup - store rdtgroup's data in resctrl file system. * @kn: kernfs node @@ -135,17 +149,19 @@ struct mongroup { * monitor only or ctrl_mon group * @mon: mongroup related data * @mode: mode of resource group + * @plr: pseudo-locked region */ struct rdtgroup { - struct kernfs_node *kn; - struct list_head rdtgroup_list; - u32 closid; - struct cpumask cpu_mask; - int flags; - atomic_t waitcount; - enum rdt_group_type type; - struct mongroup mon; - enum rdtgrp_mode mode; + struct kernfs_node *kn; + struct list_head rdtgroup_list; + u32 closid; + struct cpumask cpu_mask; + int flags; + atomic_t waitcount; + enum rdt_group_type type; + struct mongroup mon; + enum rdtgrp_mode mode; + struct pseudo_lock_region *plr; }; /* rdtgroup.flags */ @@ -246,22 +262,24 @@ struct mbm_state { * @mbps_val: When mba_sc is enabled, this holds the bandwidth in MBps * @new_ctrl: new ctrl value to be loaded * @have_new_ctrl: did user provide new_ctrl for this domain + * @plr: pseudo-locked region (if any) associated with domain */ struct rdt_domain { - struct list_head list; - int id; - struct cpumask cpu_mask; - unsigned long *rmid_busy_llc; - struct mbm_state *mbm_total; - struct mbm_state *mbm_local; - struct delayed_work mbm_over; - struct delayed_work cqm_limbo; - int mbm_work_cpu; - int cqm_work_cpu; - u32 *ctrl_val; - u32 *mbps_val; - u32 new_ctrl; - bool have_new_ctrl; + struct list_head list; + int id; + struct cpumask cpu_mask; + unsigned long *rmid_busy_llc; + struct mbm_state *mbm_total; + struct mbm_state *mbm_local; + struct delayed_work mbm_over; + struct delayed_work cqm_limbo; + int mbm_work_cpu; + int cqm_work_cpu; + u32 *ctrl_val; + u32 *mbps_val; + u32 new_ctrl; + bool have_new_ctrl; + struct pseudo_lock_region *plr; }; /**