From nobody Sun Sep 14 05:38:54 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3919C001DD for ; Thu, 13 Jul 2023 16:32:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234803AbjGMQcp (ORCPT ); Thu, 13 Jul 2023 12:32:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230151AbjGMQce (ORCPT ); Thu, 13 Jul 2023 12:32:34 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F7571980; Thu, 13 Jul 2023 09:32:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689265953; x=1720801953; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=K8r2UZiAK+1TfFAtAuBZuyucEeCR4YldPD7156Ve6Xo=; b=V5f3mOwaYud4fz5CpYXkdFI+Y4WDAE8OpTqfdXEBhyjYG7huAQTDDEsm KLuifvno5SeceIqCzaZ9/F+yu/kSkXqGRxwaUmFuXVxdR7ZYC5pvQGJKj gD3hsNSeE9wJ/7YnIbbz9sVJIUbVo56yjrf53Fh+Et8SnH450ze+1GIjH yhxV1x9io2q+TCiOE62suxdO3BJAy8/TeohsFeHaSqOpgQcWtMc3Zu5xl nUFPuLlWyDaCBajoyi1WbjZKKoh84DyPu7SIjWeikCL/URzZ2OWV4zVBh O5MNjHpiPxV7pdFK3P7MYg5aqLVWAiMlIVATU08VaGzpW2HfoRdt4LirR w==; X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="362707635" X-IronPort-AV: E=Sophos;i="6.01,203,1684825200"; d="scan'208";a="362707635" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 09:32:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="722046383" X-IronPort-AV: E=Sophos;i="6.01,203,1684825200"; d="scan'208";a="722046383" Received: from agluck-desk3.sc.intel.com ([172.25.222.74]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 09:32:22 -0700 From: Tony Luck To: Fenghua Yu , Reinette Chatre , Peter Newman , Jonathan Corbet , Shuah Khan , x86@kernel.org Cc: Shaopeng Tan , James Morse , Jamie Iles , Babu Moger , Randy Dunlap , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v3 5/8] x86/resctrl: Add package scoped resource Date: Thu, 13 Jul 2023 09:32:04 -0700 Message-Id: <20230713163207.219710-6-tony.luck@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230713163207.219710-1-tony.luck@intel.com> References: <20230713163207.219710-1-tony.luck@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Some Intel features require setting a package scoped model specific register. Add a new resource that builds domains for each package. Signed-off-by: Tony Luck Reviewed-by: Peter Newman --- include/linux/resctrl.h | 1 + arch/x86/kernel/cpu/resctrl/internal.h | 6 ++++-- arch/x86/kernel/cpu/resctrl/core.c | 23 +++++++++++++++++++---- 3 files changed, 24 insertions(+), 6 deletions(-) diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 25051daa6655..f504f6263fec 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -167,6 +167,7 @@ struct rdt_resource { int rid; bool alloc_capable; bool mon_capable; + bool pkg_actions; int num_rmid; int scope; struct resctrl_cache cache; diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/r= esctrl/internal.h index 38bac0062c82..67340c83392f 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -438,6 +438,7 @@ enum resctrl_res_level { RDT_RESOURCE_MBA, RDT_RESOURCE_SMBA, RDT_RESOURCE_NODE, + RDT_RESOURCE_PKG, =20 /* Must be the last */ RDT_NUM_RESOURCES, @@ -447,6 +448,7 @@ enum resctrl_scope { SCOPE_L2_CACHE =3D 2, SCOPE_L3_CACHE =3D 3, SCOPE_NODE, + SCOPE_PKG, }; =20 static inline int get_mbm_res_level(void) @@ -478,9 +480,9 @@ int resctrl_arch_set_cdp_enabled(enum resctrl_res_level= l, bool enable); r <=3D &rdt_resources_all[RDT_NUM_RESOURCES - 1].r_resctrl; \ r =3D resctrl_inc(r)) =20 -#define for_each_capable_rdt_resource(r) \ +#define for_each_domain_needed_rdt_resource(r) \ for_each_rdt_resource(r) \ - if (r->alloc_capable || r->mon_capable) + if (r->alloc_capable || r->mon_capable || r->pkg_actions) =20 #define for_each_alloc_capable_rdt_resource(r) \ for_each_rdt_resource(r) \ diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 6fe9f87d4403..af3be3c2db96 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -127,6 +127,16 @@ struct rdt_hw_resource rdt_resources_all[] =3D { .fflags =3D 0, }, }, + [RDT_RESOURCE_PKG] =3D + { + .r_resctrl =3D { + .rid =3D RDT_RESOURCE_PKG, + .name =3D "PKG", + .scope =3D SCOPE_PKG, + .domains =3D domain_init(RDT_RESOURCE_PKG), + .fflags =3D 0, + }, + }, }; =20 /* @@ -504,9 +514,14 @@ static int arch_domain_mbm_alloc(u32 num_rmid, struct = rdt_hw_domain *hw_dom) =20 static int get_domain_id(int cpu, enum resctrl_scope scope) { - if (scope =3D=3D SCOPE_NODE) + switch (scope) { + case SCOPE_NODE: return cpu_to_node(cpu); - return get_cpu_cacheinfo_id(cpu, scope); + case SCOPE_PKG: + return topology_physical_package_id(cpu); + default: + return get_cpu_cacheinfo_id(cpu, scope); + } } =20 /* @@ -630,7 +645,7 @@ static int resctrl_online_cpu(unsigned int cpu) struct rdt_resource *r; =20 mutex_lock(&rdtgroup_mutex); - for_each_capable_rdt_resource(r) + for_each_domain_needed_rdt_resource(r) domain_add_cpu(cpu, r); /* The cpu is set in default rdtgroup after online. */ cpumask_set_cpu(cpu, &rdtgroup_default.cpu_mask); @@ -657,7 +672,7 @@ static int resctrl_offline_cpu(unsigned int cpu) struct rdt_resource *r; =20 mutex_lock(&rdtgroup_mutex); - for_each_capable_rdt_resource(r) + for_each_domain_needed_rdt_resource(r) domain_remove_cpu(cpu, r); list_for_each_entry(rdtgrp, &rdt_all_groups, rdtgroup_list) { if (cpumask_test_and_clear_cpu(cpu, &rdtgrp->cpu_mask)) { --=20 2.40.1