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Message-ID: <aef058a6-cdc9-cd86-cbba-ff96c59ef84d@linux.intel.com>
Date: Thu, 9 May 2019 11:02:49 -0400
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: Len Brown <lenb@...nel.org>, x86@...nel.org
Cc: linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com>
Subject: Re: [PATCH 21/22] perf/x86/intel/uncore: renames in response to
multi-die/pkg support
On 5/6/2019 5:26 PM, Len Brown wrote:
> From: Len Brown <len.brown@...el.com>
>
> 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 <kan.liang@...ux.intel.com>
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 <len.brown@...el.com>
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---
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
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