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=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 1E964C04AB1 for ; Thu, 9 May 2019 15:02:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D948B20644 for ; Thu, 9 May 2019 15:02:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726853AbfEIPCw (ORCPT ); Thu, 9 May 2019 11:02:52 -0400 Received: from mga17.intel.com ([192.55.52.151]:45544 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726234AbfEIPCv (ORCPT ); Thu, 9 May 2019 11:02:51 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 May 2019 08:02:51 -0700 X-ExtLoop1: 1 Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 09 May 2019 08:02:51 -0700 Received: from [10.254.89.177] (kliang2-mobl.ccr.corp.intel.com [10.254.89.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by linux.intel.com (Postfix) with ESMTPS id 8CF6E5805AD; Thu, 9 May 2019 08:02:50 -0700 (PDT) Subject: Re: [PATCH 21/22] perf/x86/intel/uncore: renames in response to multi-die/pkg support To: Len Brown , x86@kernel.org Cc: linux-kernel@vger.kernel.org, Len Brown References: <6f53f0e494d743c79e18f6e3a98085711e6ddd0c.1557177585.git.len.brown@intel.com> From: "Liang, Kan" Message-ID: Date: Thu, 9 May 2019 11:02:49 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/6/2019 5:26 PM, Len Brown wrote: > From: Len Brown > > Syntax update only -- no logical or functional change. > > In response to the new multi-die/package changes, update variable names > to use the more generic "box" terminology, instead of "pkg", > as the boxes can refer to either packages or die. > I think the "box" terminology in perf uncore has different meaning. It stands for an uncore PMU unit on a socket/die. I think it may be better use "die" to replace the "pkg". How about the patch as below? Thanks, Kan From 94187403be80b1c1ac13929973958c046a952278 Mon Sep 17 00:00:00 2001 From: Kan Liang Date: Thu, 9 May 2019 07:19:21 -0700 Subject: [PATCH 1/2] perf/x86/intel/uncore: Renames in response to multi-die/pkg support Syntax update only -- no logical or functional change. In response to the new multi-die/package changes, update variable names to use "die" terminology, instead of "pkg". For previous platforms which doesn't have multi-die, "die" is identical as "pkg". Originally-by: Len Brown Signed-off-by: Kan Liang --- arch/x86/events/intel/uncore.c | 74 ++++++++++++++++++------------------ arch/x86/events/intel/uncore.h | 5 ++- arch/x86/events/intel/uncore_snbep.c | 2 +- 3 files changed, 41 insertions(+), 40 deletions(-) diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index a6461ff..faec348 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -14,7 +14,7 @@ struct pci_driver *uncore_pci_driver; DEFINE_RAW_SPINLOCK(pci2phy_map_lock); struct list_head pci2phy_map_head = LIST_HEAD_INIT(pci2phy_map_head); struct pci_extra_dev *uncore_extra_pci_dev; -static int max_packages; +static int max_dies; /* mask of cpus that collect uncore events */ static cpumask_t uncore_cpu_mask; @@ -100,13 +100,13 @@ ssize_t uncore_event_show(struct kobject *kobj, struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu) { - unsigned int pkgid = topology_logical_die_id(cpu); + unsigned int dieid = topology_logical_die_id(cpu); /* * The unsigned check also catches the '-1' return value for non * existent mappings in the topology map. */ - return pkgid < max_packages ? pmu->boxes[pkgid] : NULL; + return dieid < max_dies ? pmu->boxes[dieid] : NULL; } u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event) @@ -311,7 +311,7 @@ static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, uncore_pmu_init_hrtimer(box); box->cpu = -1; box->pci_phys_id = -1; - box->pkgid = -1; + box->dieid = -1; /* set default hrtimer timeout */ box->hrtimer_duration = UNCORE_PMU_HRTIMER_INTERVAL; @@ -826,10 +826,10 @@ static void uncore_pmu_unregister(struct intel_uncore_pmu *pmu) static void uncore_free_boxes(struct intel_uncore_pmu *pmu) { - int pkg; + int die; - for (pkg = 0; pkg < max_packages; pkg++) - kfree(pmu->boxes[pkg]); + for (die = 0; die < max_dies; die++) + kfree(pmu->boxes[die]); kfree(pmu->boxes); } @@ -866,7 +866,7 @@ static int __init uncore_type_init(struct intel_uncore_type *type, bool setid) if (!pmus) return -ENOMEM; - size = max_packages * sizeof(struct intel_uncore_box *); + size = max_dies * sizeof(struct intel_uncore_box *); for (i = 0; i < type->num_boxes; i++) { pmus[i].func_id = setid ? i : -1; @@ -936,21 +936,21 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id struct intel_uncore_type *type; struct intel_uncore_pmu *pmu = NULL; struct intel_uncore_box *box; - int phys_id, pkg, ret; + int phys_id, die, ret; phys_id = uncore_pcibus_to_physid(pdev->bus); if (phys_id < 0) return -ENODEV; - pkg = (topology_max_die_per_package() > 1) ? phys_id : + die = (topology_max_die_per_package() > 1) ? phys_id : topology_phys_to_logical_pkg(phys_id); - if (pkg < 0) + if (die < 0) return -EINVAL; if (UNCORE_PCI_DEV_TYPE(id->driver_data) == UNCORE_EXTRA_PCI_DEV) { int idx = UNCORE_PCI_DEV_IDX(id->driver_data); - uncore_extra_pci_dev[pkg].dev[idx] = pdev; + uncore_extra_pci_dev[die].dev[idx] = pdev; pci_set_drvdata(pdev, NULL); return 0; } @@ -989,7 +989,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id pmu = &type->pmus[UNCORE_PCI_DEV_IDX(id->driver_data)]; } - if (WARN_ON_ONCE(pmu->boxes[pkg] != NULL)) + if (WARN_ON_ONCE(pmu->boxes[die] != NULL)) return -EINVAL; box = uncore_alloc_box(type, NUMA_NO_NODE); @@ -1003,13 +1003,13 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id atomic_inc(&box->refcnt); box->pci_phys_id = phys_id; - box->pkgid = pkg; + box->dieid = die; box->pci_dev = pdev; box->pmu = pmu; uncore_box_init(box); pci_set_drvdata(pdev, box); - pmu->boxes[pkg] = box; + pmu->boxes[die] = box; if (atomic_inc_return(&pmu->activeboxes) > 1) return 0; @@ -1017,7 +1017,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id ret = uncore_pmu_register(pmu); if (ret) { pci_set_drvdata(pdev, NULL); - pmu->boxes[pkg] = NULL; + pmu->boxes[die] = NULL; uncore_box_exit(box); kfree(box); } @@ -1028,17 +1028,17 @@ static void uncore_pci_remove(struct pci_dev *pdev) { struct intel_uncore_box *box; struct intel_uncore_pmu *pmu; - int i, phys_id, pkg; + int i, phys_id, die; phys_id = uncore_pcibus_to_physid(pdev->bus); box = pci_get_drvdata(pdev); if (!box) { - pkg = (topology_max_die_per_package() > 1) ? phys_id : + die = (topology_max_die_per_package() > 1) ? phys_id : topology_phys_to_logical_pkg(phys_id); for (i = 0; i < UNCORE_EXTRA_PCI_DEV_MAX; i++) { - if (uncore_extra_pci_dev[pkg].dev[i] == pdev) { - uncore_extra_pci_dev[pkg].dev[i] = NULL; + if (uncore_extra_pci_dev[die].dev[i] == pdev) { + uncore_extra_pci_dev[die].dev[i] = NULL; break; } } @@ -1051,7 +1051,7 @@ static void uncore_pci_remove(struct pci_dev *pdev) return; pci_set_drvdata(pdev, NULL); - pmu->boxes[box->pkgid] = NULL; + pmu->boxes[box->dieid] = NULL; if (atomic_dec_return(&pmu->activeboxes) == 0) uncore_pmu_unregister(pmu); uncore_box_exit(box); @@ -1063,7 +1063,7 @@ static int __init uncore_pci_init(void) size_t size; int ret; - size = max_packages * sizeof(struct pci_extra_dev); + size = max_dies * sizeof(struct pci_extra_dev); uncore_extra_pci_dev = kzalloc(size, GFP_KERNEL); if (!uncore_extra_pci_dev) { ret = -ENOMEM; @@ -1110,11 +1110,11 @@ static void uncore_change_type_ctx(struct intel_uncore_type *type, int old_cpu, { struct intel_uncore_pmu *pmu = type->pmus; struct intel_uncore_box *box; - int i, pkg; + int i, die; - pkg = topology_logical_die_id(old_cpu < 0 ? new_cpu : old_cpu); + die = topology_logical_die_id(old_cpu < 0 ? new_cpu : old_cpu); for (i = 0; i < type->num_boxes; i++, pmu++) { - box = pmu->boxes[pkg]; + box = pmu->boxes[die]; if (!box) continue; @@ -1147,7 +1147,7 @@ static int uncore_event_cpu_offline(unsigned int cpu) struct intel_uncore_type *type, **types = uncore_msr_uncores; struct intel_uncore_pmu *pmu; struct intel_uncore_box *box; - int i, pkg, target; + int i, die, target; /* Check if exiting cpu is used for collecting uncore events */ if (!cpumask_test_and_clear_cpu(cpu, &uncore_cpu_mask)) @@ -1166,12 +1166,12 @@ static int uncore_event_cpu_offline(unsigned int cpu) unref: /* Clear the references */ - pkg = topology_logical_die_id(cpu); + die = topology_logical_die_id(cpu); for (; *types; types++) { type = *types; pmu = type->pmus; for (i = 0; i < type->num_boxes; i++, pmu++) { - box = pmu->boxes[pkg]; + box = pmu->boxes[die]; if (box && atomic_dec_return(&box->refcnt) == 0) uncore_box_exit(box); } @@ -1180,7 +1180,7 @@ static int uncore_event_cpu_offline(unsigned int cpu) } static int allocate_boxes(struct intel_uncore_type **types, - unsigned int pkg, unsigned int cpu) + unsigned int die, unsigned int cpu) { struct intel_uncore_box *box, *tmp; struct intel_uncore_type *type; @@ -1193,20 +1193,20 @@ static int allocate_boxes(struct intel_uncore_type **types, type = *types; pmu = type->pmus; for (i = 0; i < type->num_boxes; i++, pmu++) { - if (pmu->boxes[pkg]) + if (pmu->boxes[die]) continue; box = uncore_alloc_box(type, cpu_to_node(cpu)); if (!box) goto cleanup; box->pmu = pmu; - box->pkgid = pkg; + box->dieid = die; list_add(&box->active_list, &allocated); } } /* Install them in the pmus */ list_for_each_entry_safe(box, tmp, &allocated, active_list) { list_del_init(&box->active_list); - box->pmu->boxes[pkg] = box; + box->pmu->boxes[die] = box; } return 0; @@ -1223,10 +1223,10 @@ static int uncore_event_cpu_online(unsigned int cpu) struct intel_uncore_type *type, **types = uncore_msr_uncores; struct intel_uncore_pmu *pmu; struct intel_uncore_box *box; - int i, ret, pkg, target; + int i, ret, die, target; - pkg = topology_logical_die_id(cpu); - ret = allocate_boxes(types, pkg, cpu); + die = topology_logical_die_id(cpu); + ret = allocate_boxes(types, die, cpu); if (ret) return ret; @@ -1234,7 +1234,7 @@ static int uncore_event_cpu_online(unsigned int cpu) type = *types; pmu = type->pmus; for (i = 0; i < type->num_boxes; i++, pmu++) { - box = pmu->boxes[pkg]; + box = pmu->boxes[die]; if (box && atomic_inc_return(&box->refcnt) == 1) uncore_box_init(box); } @@ -1413,7 +1413,7 @@ static int __init intel_uncore_init(void) if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) return -ENODEV; - max_packages = topology_max_packages() * topology_max_die_per_package(); + max_dies = topology_max_packages() * topology_max_die_per_package(); uncore_init = (struct intel_uncore_init_fun *)id->driver_data; if (uncore_init->pci_init) { diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h index 853a49a..180ffa4 100644 --- a/arch/x86/events/intel/uncore.h +++ b/arch/x86/events/intel/uncore.h @@ -108,7 +108,8 @@ struct intel_uncore_extra_reg { struct intel_uncore_box { int pci_phys_id; - int pkgid; /* Logical package ID */ + /* Logical die ID, which is identical as pkg id for single die system. */ + int dieid; int n_active; /* number of active events */ int n_events; int cpu; /* cpu to collect events */ @@ -467,7 +468,7 @@ static inline void uncore_box_exit(struct intel_uncore_box *box) static inline bool uncore_box_is_fake(struct intel_uncore_box *box) { - return (box->pkgid < 0); + return (box->dieid < 0); } static inline struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event) diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index b10e043..aebbb1b 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -1058,7 +1058,7 @@ static void snbep_qpi_enable_event(struct intel_uncore_box *box, struct perf_eve if (reg1->idx != EXTRA_REG_NONE) { int idx = box->pmu->pmu_idx + SNBEP_PCI_QPI_PORT0_FILTER; - int pkg = box->pkgid; + int pkg = box->dieid; struct pci_dev *filter_pdev = uncore_extra_pci_dev[pkg].dev[idx]; if (filter_pdev) { -- 2.7.4