[PATCH v3 06/10] RFC drm/xe/pmu: Enable PMU interface and add engine busyness counter
Riana Tauro
riana.tauro at intel.com
Thu Dec 14 11:31:40 UTC 2023
From: Aravind Iddamsetty <aravind.iddamsetty at linux.intel.com>
This patch adds the PMU base implementation along with engine busyness
counters.
GuC provides engine busyness ticks as a 64 bit counter which count
as clock ticks. These counters are maintained in a
shared memory buffer and internally updated on a continuous basis.
This is listed by perf tool as
sudo ./perf list
xe_0000_03_00.0/bcs0-busy-ticks-gt0/ [Kernel PMU event]
xe_0000_03_00.0/ccs0-busy-ticks-gt0/ [Kernel PMU event]
xe_0000_03_00.0/rcs0-busy-ticks-gt0/ [Kernel PMU event]
xe_0000_03_00.0/vcs0-busy-ticks-gt0/ [Kernel PMU event]
xe_0000_03_00.0/vecs0-busy-ticks-gt0/ [Kernel PMU event]
and read as
sudo ./perf stat -e xe_0000_03_00.0/bcs0-busy-ticks-gt0/ -I 1000
time counts unit events
1.000674178 2052 xe_0000_03_00.0/bcs0-busy-ticks-gt0/
2.006626312 2033 xe_0000_03_00.0/bcs0-busy-ticks-gt0/
3.009499300 40067 xe_0000_03_00.0/bcs0-busy-ticks-gt0/
4.010521486 8491 xe_0000_03_00.0/bcs0-busy-ticks-gt0/
The pmu base implementation is taken from i915.
v2: rebase
v3: add engine busyness
Co-developed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Co-developed-by: Bommu Krishnaiah <krishnaiah.bommu at intel.com>
Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu at intel.com>
Co-developed-by: Riana Tauro <riana.tauro at intel.com>
Signed-off-by: Riana Tauro <riana.tauro at intel.com>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty at linux.intel.com>
---
drivers/gpu/drm/xe/Makefile | 2 +
drivers/gpu/drm/xe/xe_device.c | 2 +
drivers/gpu/drm/xe/xe_device_types.h | 4 +
drivers/gpu/drm/xe/xe_module.c | 5 +
drivers/gpu/drm/xe/xe_pmu.c | 543 +++++++++++++++++++++++++++
drivers/gpu/drm/xe/xe_pmu.h | 23 ++
drivers/gpu/drm/xe/xe_pmu_types.h | 49 +++
7 files changed, 628 insertions(+)
create mode 100644 drivers/gpu/drm/xe/xe_pmu.c
create mode 100644 drivers/gpu/drm/xe/xe_pmu.h
create mode 100644 drivers/gpu/drm/xe/xe_pmu_types.h
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index 2523dc96986e..862266efd20a 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -281,6 +281,8 @@ endif
obj-$(CONFIG_DRM_XE) += xe.o
obj-$(CONFIG_DRM_XE_KUNIT_TEST) += tests/
+xe-$(CONFIG_PERF_EVENTS) += xe_pmu.o
+
# header test
hdrtest_find_args := -not -path xe_rtp_helpers.h
ifneq ($(CONFIG_DRM_XE_DISPLAY),y)
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index d9ae77fe7382..436a25a4b8a7 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -531,6 +531,8 @@ int xe_device_probe(struct xe_device *xe)
xe_hwmon_register(xe);
+ xe_pmu_register(&xe->pmu);
+
err = drmm_add_action_or_reset(&xe->drm, xe_device_sanitize, xe);
if (err)
return err;
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index c45ef17b3473..54d81ae8f1cb 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -18,6 +18,7 @@
#include "xe_lmtt_types.h"
#include "xe_platform_types.h"
#include "xe_pt_types.h"
+#include "xe_pmu.h"
#include "xe_sriov_types.h"
#include "xe_step_types.h"
@@ -474,6 +475,9 @@ struct xe_device {
/* To shut up runtime pm macros.. */
struct xe_runtime_pm {} runtime_pm;
+ /** @pmu: performance monitoring unit */
+ struct xe_pmu pmu;
+
/* For pcode */
struct mutex sb_lock;
diff --git a/drivers/gpu/drm/xe/xe_module.c b/drivers/gpu/drm/xe/xe_module.c
index 110b69864656..51bf69b7ab22 100644
--- a/drivers/gpu/drm/xe/xe_module.c
+++ b/drivers/gpu/drm/xe/xe_module.c
@@ -11,6 +11,7 @@
#include "xe_drv.h"
#include "xe_hw_fence.h"
#include "xe_pci.h"
+#include "xe_pmu.h"
#include "xe_sched_job.h"
struct xe_modparam xe_modparam = {
@@ -62,6 +63,10 @@ static const struct init_funcs init_funcs[] = {
.init = xe_sched_job_module_init,
.exit = xe_sched_job_module_exit,
},
+ {
+ .init = xe_pmu_init,
+ .exit = xe_pmu_exit,
+ },
{
.init = xe_register_pci_driver,
.exit = xe_unregister_pci_driver,
diff --git a/drivers/gpu/drm/xe/xe_pmu.c b/drivers/gpu/drm/xe/xe_pmu.c
new file mode 100644
index 000000000000..5e2ad4badaed
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pmu.c
@@ -0,0 +1,543 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include <drm/drm_drv.h>
+#include <drm/drm_managed.h>
+#include <drm/xe_drm.h>
+
+#include "xe_device.h"
+#include "xe_gt.h"
+
+#define XE_ENGINE_SAMPLE_COUNT (DRM_XE_PMU_SAMPLE_BUSY_TICKS + 1)
+
+static cpumask_t xe_pmu_cpumask;
+static unsigned int xe_pmu_target_cpu = -1;
+
+static unsigned int config_gt_id(const u64 config)
+{
+ return config >> __DRM_XE_PMU_GT_SHIFT;
+}
+
+static u64 config_counter(const u64 config)
+{
+ return config & ~(~0ULL << __DRM_XE_PMU_GT_SHIFT);
+}
+
+static u8 engine_event_sample(struct perf_event *event)
+{
+ u64 config = event->attr.config;
+
+ return config_counter(config) & 0xf;
+}
+
+static u8 engine_event_class(struct perf_event *event)
+{
+ u64 config = event->attr.config;
+
+ return (config_counter(config) >> __DRM_XE_PMU_CLASS_SHIFT) & 0xff;
+}
+
+static u8 engine_event_instance(struct perf_event *event)
+{
+ u64 config = event->attr.config;
+
+ return (config_counter(config) >> __DRM_XE_PMU_SAMPLE_BITS) & 0xff;
+}
+
+static bool is_engine_event(struct perf_event *event)
+{
+ return config_counter(event->attr.config) < __DRM_XE_PMU_OTHER(0, 0);
+}
+
+static int engine_event_status(struct xe_hw_engine *hwe,
+ enum drm_xe_pmu_engine_sample sample)
+{
+ if (!hwe)
+ return -ENODEV;
+
+ /* Other engine events will be added, XE_ENGINE_SAMPLE_COUNT will be changed */
+ return (sample >= DRM_XE_PMU_SAMPLE_BUSY_TICKS && sample < XE_ENGINE_SAMPLE_COUNT)
+ ? 0 : -ENOENT;
+}
+
+static int engine_event_init(struct perf_event *event)
+{
+ struct xe_device *xe = container_of(event->pmu, typeof(*xe), pmu.base);
+ const u64 config = event->attr.config;
+ const unsigned int gt_id = config_gt_id(config);
+ struct xe_gt *gt = xe_device_get_gt(xe, gt_id);
+ struct xe_hw_engine *hwe;
+
+ hwe = xe_gt_hw_engine(gt, xe_hw_engine_from_user_class(engine_event_class(event)),
+ engine_event_instance(event), true);
+
+ return engine_event_status(hwe, engine_event_sample(event));
+}
+
+static void xe_pmu_event_destroy(struct perf_event *event)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+
+ drm_WARN_ON(&xe->drm, event->parent);
+
+ drm_dev_put(&xe->drm);
+}
+
+static int xe_pmu_event_init(struct perf_event *event)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+ struct xe_pmu *pmu = &xe->pmu;
+ int ret;
+
+ if (pmu->closed)
+ return -ENODEV;
+
+ if (event->attr.type != event->pmu->type)
+ return -ENOENT;
+
+ /* unsupported modes and filters */
+ if (event->attr.sample_period) /* no sampling */
+ return -EINVAL;
+
+ if (has_branch_stack(event))
+ return -EOPNOTSUPP;
+
+ if (event->cpu < 0)
+ return -EINVAL;
+
+ /* only allow running on one cpu at a time */
+ if (!cpumask_test_cpu(event->cpu, &xe_pmu_cpumask))
+ return -EINVAL;
+
+ if (is_engine_event(event)) {
+ ret = engine_event_init(event);
+ if (ret)
+ return ret;
+ }
+
+ if (!event->parent) {
+ drm_dev_get(&xe->drm);
+ event->destroy = xe_pmu_event_destroy;
+ }
+
+ return 0;
+}
+
+static u64 __xe_pmu_event_read(struct perf_event *event)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+ const unsigned int gt_id = config_gt_id(event->attr.config);
+ struct xe_gt *gt = xe_device_get_gt(xe, gt_id);
+ u64 val;
+
+ if (is_engine_event(event)) {
+ u8 sample = engine_event_sample(event);
+ struct xe_hw_engine *hwe;
+
+ hwe = xe_gt_hw_engine(gt, xe_hw_engine_from_user_class(engine_event_class(event)),
+ engine_event_instance(event), true);
+ if (!hwe)
+ drm_WARN_ON_ONCE(&xe->drm, "unknown engine\n");
+ else if (sample == DRM_XE_PMU_SAMPLE_BUSY_TICKS)
+ val = xe_gt_engine_busy_ticks(gt, hwe);
+ else
+ drm_warn(&xe->drm, "unknown pmu engine event\n");
+ }
+
+ return val;
+}
+
+static void xe_pmu_event_read(struct perf_event *event)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+ struct hw_perf_event *hwc = &event->hw;
+ struct xe_pmu *pmu = &xe->pmu;
+ u64 prev, new;
+
+ if (pmu->closed) {
+ event->hw.state = PERF_HES_STOPPED;
+ return;
+ }
+again:
+ prev = local64_read(&hwc->prev_count);
+ new = __xe_pmu_event_read(event);
+
+ if (local64_cmpxchg(&hwc->prev_count, prev, new) != prev)
+ goto again;
+
+ local64_add(new - prev, &event->count);
+}
+
+static void xe_pmu_enable(struct perf_event *event)
+{
+ /*
+ * Store the current counter value so we can report the correct delta
+ * for all listeners. Even when the event was already enabled and has
+ * an existing non-zero value.
+ */
+ local64_set(&event->hw.prev_count, __xe_pmu_event_read(event));
+}
+
+static void xe_pmu_event_start(struct perf_event *event, int flags)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+ struct xe_pmu *pmu = &xe->pmu;
+
+ if (pmu->closed)
+ return;
+
+ xe_pmu_enable(event);
+ event->hw.state = 0;
+}
+
+static void xe_pmu_event_stop(struct perf_event *event, int flags)
+{
+ if (flags & PERF_EF_UPDATE)
+ xe_pmu_event_read(event);
+
+ event->hw.state = PERF_HES_STOPPED;
+}
+
+static int xe_pmu_event_add(struct perf_event *event, int flags)
+{
+ struct xe_device *xe =
+ container_of(event->pmu, typeof(*xe), pmu.base);
+ struct xe_pmu *pmu = &xe->pmu;
+
+ if (pmu->closed)
+ return -ENODEV;
+
+ if (flags & PERF_EF_START)
+ xe_pmu_event_start(event, flags);
+
+ return 0;
+}
+
+static void xe_pmu_event_del(struct perf_event *event, int flags)
+{
+ xe_pmu_event_stop(event, PERF_EF_UPDATE);
+}
+
+struct xe_ext_attribute {
+ struct device_attribute attr;
+ unsigned long val;
+};
+
+static ssize_t xe_pmu_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct xe_ext_attribute *eattr;
+
+ eattr = container_of(attr, struct xe_ext_attribute, attr);
+ return sprintf(buf, "config=0x%lx\n", eattr->val);
+}
+
+static ssize_t cpumask_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return cpumap_print_to_pagebuf(true, buf, &xe_pmu_cpumask);
+}
+
+static DEVICE_ATTR_RO(cpumask);
+
+static struct attribute *xe_cpumask_attrs[] = {
+ &dev_attr_cpumask.attr,
+ NULL,
+};
+
+static const struct attribute_group xe_pmu_cpumask_attr_group = {
+ .attrs = xe_cpumask_attrs,
+};
+
+#define __engine_event(__sample, __name) \
+{ \
+ .sample = (__sample), \
+ .name = (__name), \
+}
+
+static struct xe_ext_attribute *
+add_xe_attr(struct xe_ext_attribute *attr, const char *name, u64 config)
+{
+ sysfs_attr_init(&attr->attr.attr);
+ attr->attr.attr.name = name;
+ attr->attr.attr.mode = 0444;
+ attr->attr.show = xe_pmu_event_show;
+ attr->val = config;
+
+ return ++attr;
+}
+
+static struct attribute **
+create_event_attributes(struct xe_pmu *pmu)
+{
+ struct xe_device *xe = container_of(pmu, typeof(*xe), pmu);
+ struct xe_ext_attribute *xe_attr = NULL, *xe_iter;
+ struct attribute **attr = NULL, **attr_iter;
+ unsigned int count = 0;
+ enum xe_hw_engine_id id;
+ unsigned int i, j;
+ struct xe_hw_engine *hwe;
+ struct xe_gt *gt;
+
+ static const struct {
+ enum drm_xe_pmu_engine_sample sample;
+ char *name;
+ } engine_events[] = {
+ __engine_event(DRM_XE_PMU_SAMPLE_BUSY_TICKS, "busy-ticks"),
+ };
+
+ for_each_gt(gt, xe, j) {
+ for_each_hw_engine(hwe, gt, id) {
+ for (i = 0; i < ARRAY_SIZE(engine_events); i++) {
+ if (!engine_event_status(hwe, engine_events[i].sample))
+ count++;
+ }
+ }
+ }
+
+ /* Allocate attribute objects and table. */
+ xe_attr = kcalloc(count, sizeof(*xe_attr), GFP_KERNEL);
+ if (!xe_attr)
+ goto err_alloc;
+
+ /* Max one pointer of each attribute type plus a termination entry. */
+ attr = kcalloc(count + 1, sizeof(*attr), GFP_KERNEL);
+ if (!attr)
+ goto err_alloc;
+
+ xe_iter = xe_attr;
+ attr_iter = attr;
+
+ /* Initialize supported engine counters */
+ for_each_gt(gt, xe, j) {
+ for_each_hw_engine(hwe, gt, id) {
+ for (i = 0; i < ARRAY_SIZE(engine_events); i++) {
+ char *str;
+
+ if (engine_event_status(hwe, engine_events[i].sample))
+ continue;
+
+ str = kasprintf(GFP_KERNEL, "%s-%s-gt%u",
+ hwe->name, engine_events[i].name, j);
+
+ if (!str)
+ goto err;
+
+ *attr_iter++ = &xe_iter->attr.attr;
+ xe_iter = add_xe_attr(xe_iter, str,
+ __DRM_XE_PMU_ENGINE(j, xe_hw_engine_to_user_class(hwe->class),
+ hwe->logical_instance,
+ engine_events[i].sample));
+ }
+ }
+ }
+
+ pmu->xe_attr = xe_attr;
+ return attr;
+
+err:
+ for (attr_iter = attr; *attr_iter; attr_iter++)
+ kfree((*attr_iter)->name);
+
+err_alloc:
+ kfree(attr);
+ kfree(xe_attr);
+
+ return NULL;
+}
+
+static void free_event_attributes(struct xe_pmu *pmu)
+{
+ struct attribute **attr_iter = pmu->events_attr_group.attrs;
+
+ for (; *attr_iter; attr_iter++)
+ kfree((*attr_iter)->name);
+
+ kfree(pmu->events_attr_group.attrs);
+ kfree(pmu->xe_attr);
+
+ pmu->events_attr_group.attrs = NULL;
+ pmu->xe_attr = NULL;
+}
+
+static int xe_pmu_cpu_online(unsigned int cpu, struct hlist_node *node)
+{
+ struct xe_pmu *pmu = hlist_entry_safe(node, typeof(*pmu), cpuhp.node);
+
+ /* Select the first online CPU as a designated reader. */
+ if (cpumask_empty(&xe_pmu_cpumask))
+ cpumask_set_cpu(cpu, &xe_pmu_cpumask);
+
+ return 0;
+}
+
+static int xe_pmu_cpu_offline(unsigned int cpu, struct hlist_node *node)
+{
+ struct xe_pmu *pmu = hlist_entry_safe(node, typeof(*pmu), cpuhp.node);
+ unsigned int target = xe_pmu_target_cpu;
+
+ /*
+ * Unregistering an instance generates a CPU offline event which we must
+ * ignore to avoid incorrectly modifying the shared xe_pmu_cpumask.
+ */
+ if (pmu->closed)
+ return 0;
+
+ if (cpumask_test_and_clear_cpu(cpu, &xe_pmu_cpumask)) {
+ target = cpumask_any_but(topology_sibling_cpumask(cpu), cpu);
+
+ /* Migrate events if there is a valid target */
+ if (target < nr_cpu_ids) {
+ cpumask_set_cpu(target, &xe_pmu_cpumask);
+ xe_pmu_target_cpu = target;
+ }
+ }
+
+ if (target < nr_cpu_ids && target != pmu->cpuhp.cpu) {
+ perf_pmu_migrate_context(&pmu->base, cpu, target);
+ pmu->cpuhp.cpu = target;
+ }
+
+ return 0;
+}
+
+static enum cpuhp_state cpuhp_slot = CPUHP_INVALID;
+
+int xe_pmu_init(void)
+{
+ int ret;
+
+ ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
+ "perf/x86/intel/xe:online",
+ xe_pmu_cpu_online,
+ xe_pmu_cpu_offline);
+ if (ret < 0)
+ pr_notice("Failed to setup cpuhp state for xe PMU! (%d)\n",
+ ret);
+ else
+ cpuhp_slot = ret;
+
+ return 0;
+}
+
+void xe_pmu_exit(void)
+{
+ if (cpuhp_slot != CPUHP_INVALID)
+ cpuhp_remove_multi_state(cpuhp_slot);
+}
+
+static int xe_pmu_register_cpuhp_state(struct xe_pmu *pmu)
+{
+ if (cpuhp_slot == CPUHP_INVALID)
+ return -EINVAL;
+
+ return cpuhp_state_add_instance(cpuhp_slot, &pmu->cpuhp.node);
+}
+
+static void xe_pmu_unregister_cpuhp_state(struct xe_pmu *pmu)
+{
+ cpuhp_state_remove_instance(cpuhp_slot, &pmu->cpuhp.node);
+}
+
+static void xe_pmu_unregister(struct drm_device *device, void *arg)
+{
+ struct xe_pmu *pmu = arg;
+
+ if (!pmu->base.event_init)
+ return;
+
+ /*
+ * "Disconnect" the PMU callbacks - since all are atomic synchronize_rcu
+ * ensures all currently executing ones will have exited before we
+ * proceed with unregistration.
+ */
+ pmu->closed = true;
+ synchronize_rcu();
+
+ xe_pmu_unregister_cpuhp_state(pmu);
+
+ perf_pmu_unregister(&pmu->base);
+ pmu->base.event_init = NULL;
+ kfree(pmu->base.attr_groups);
+ kfree(pmu->name);
+ free_event_attributes(pmu);
+}
+
+void xe_pmu_register(struct xe_pmu *pmu)
+{
+ struct xe_device *xe = container_of(pmu, typeof(*xe), pmu);
+ const struct attribute_group *attr_groups[] = {
+ &pmu->events_attr_group,
+ &xe_pmu_cpumask_attr_group,
+ NULL
+ };
+
+ int ret = -ENOMEM;
+
+ spin_lock_init(&pmu->lock);
+ pmu->cpuhp.cpu = -1;
+
+ pmu->name = kasprintf(GFP_KERNEL,
+ "xe_%s",
+ dev_name(xe->drm.dev));
+ if (pmu->name)
+ /* tools/perf reserves colons as special. */
+ strreplace((char *)pmu->name, ':', '_');
+
+ if (!pmu->name)
+ goto err;
+
+ pmu->events_attr_group.name = "events";
+ pmu->events_attr_group.attrs = create_event_attributes(pmu);
+ if (!pmu->events_attr_group.attrs)
+ goto err_name;
+
+ pmu->base.attr_groups = kmemdup(attr_groups, sizeof(attr_groups),
+ GFP_KERNEL);
+ if (!pmu->base.attr_groups)
+ goto err_attr;
+
+ pmu->base.module = THIS_MODULE;
+ pmu->base.task_ctx_nr = perf_invalid_context;
+ pmu->base.event_init = xe_pmu_event_init;
+ pmu->base.add = xe_pmu_event_add;
+ pmu->base.del = xe_pmu_event_del;
+ pmu->base.start = xe_pmu_event_start;
+ pmu->base.stop = xe_pmu_event_stop;
+ pmu->base.read = xe_pmu_event_read;
+
+ ret = perf_pmu_register(&pmu->base, pmu->name, -1);
+ if (ret)
+ goto err_groups;
+
+ ret = xe_pmu_register_cpuhp_state(pmu);
+ if (ret)
+ goto err_unreg;
+
+ ret = drmm_add_action_or_reset(&xe->drm, xe_pmu_unregister, pmu);
+ if (ret)
+ goto err_cpuhp;
+
+ return;
+
+err_cpuhp:
+ xe_pmu_unregister_cpuhp_state(pmu);
+err_unreg:
+ perf_pmu_unregister(&pmu->base);
+err_groups:
+ kfree(pmu->base.attr_groups);
+err_attr:
+ pmu->base.event_init = NULL;
+ free_event_attributes(pmu);
+err_name:
+ kfree(pmu->name);
+err:
+ drm_notice(&xe->drm, "Failed to register PMU!\n");
+}
diff --git a/drivers/gpu/drm/xe/xe_pmu.h b/drivers/gpu/drm/xe/xe_pmu.h
new file mode 100644
index 000000000000..d6fca18466f4
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pmu.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_PMU_H_
+#define _XE_PMU_H_
+
+#include "xe_gt_types.h"
+#include "xe_pmu_types.h"
+
+#if IS_ENABLED(CONFIG_PERF_EVENTS)
+int xe_pmu_init(void);
+void xe_pmu_exit(void);
+void xe_pmu_register(struct xe_pmu *pmu);
+#else
+static inline int xe_pmu_init(void) { return 0; }
+static inline void xe_pmu_exit(void) {}
+static inline void xe_pmu_register(struct xe_pmu *pmu) {}
+#endif
+
+#endif
+
diff --git a/drivers/gpu/drm/xe/xe_pmu_types.h b/drivers/gpu/drm/xe/xe_pmu_types.h
new file mode 100644
index 000000000000..d38b24d27cfd
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pmu_types.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_PMU_TYPES_H_
+#define _XE_PMU_TYPES_H_
+
+#include <linux/perf_event.h>
+#include <linux/spinlock_types.h>
+#include <uapi/drm/xe_drm.h>
+
+#define XE_PMU_MAX_GT 2
+
+struct xe_pmu {
+ /**
+ * @cpuhp: Struct used for CPU hotplug handling.
+ */
+ struct {
+ struct hlist_node node;
+ unsigned int cpu;
+ } cpuhp;
+ /**
+ * @base: PMU base.
+ */
+ struct pmu base;
+ /**
+ * @closed: xe is unregistering.
+ */
+ bool closed;
+ /**
+ * @name: Name as registered with perf core.
+ */
+ const char *name;
+ /**
+ * @lock: Lock protecting enable mask and ref count handling.
+ */
+ spinlock_t lock;
+ /**
+ * @events_attr_group: Device events attribute group.
+ */
+ struct attribute_group events_attr_group;
+ /**
+ * @xe_attr: Memory block holding device attributes.
+ */
+ void *xe_attr;
+};
+
+#endif
--
2.40.0
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