linux/drivers/gpu/drm/i915/i915_pmu.h

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright © 2017-2018 Intel Corporation
 */

#ifndef __I915_PMU_H__
#define __I915_PMU_H__

#include <linux/hrtimer.h>
#include <linux/perf_event.h>
#include <linux/spinlock_types.h>
#include <uapi/drm/i915_drm.h>

struct drm_i915_private;
struct intel_gt;

/*
 * Non-engine events that we need to track enabled-disabled transition and
 * current state.
 */
enum i915_pmu_tracked_events { … };

/*
 * Slots used from the sampling timer (non-engine events) with some extras for
 * convenience.
 */
enum { … };

#define I915_PMU_MAX_GT …

/*
 * How many different events we track in the global PMU mask.
 *
 * It is also used to know to needed number of event reference counters.
 */
#define I915_PMU_MASK_BITS …

#define I915_ENGINE_SAMPLE_COUNT …

struct i915_pmu_sample { … };

struct i915_pmu { … };

#ifdef CONFIG_PERF_EVENTS
int i915_pmu_init(void);
void i915_pmu_exit(void);
void i915_pmu_register(struct drm_i915_private *i915);
void i915_pmu_unregister(struct drm_i915_private *i915);
void i915_pmu_gt_parked(struct intel_gt *gt);
void i915_pmu_gt_unparked(struct intel_gt *gt);
#else
static inline int i915_pmu_init(void) { return 0; }
static inline void i915_pmu_exit(void) {}
static inline void i915_pmu_register(struct drm_i915_private *i915) {}
static inline void i915_pmu_unregister(struct drm_i915_private *i915) {}
static inline void i915_pmu_gt_parked(struct intel_gt *gt) {}
static inline void i915_pmu_gt_unparked(struct intel_gt *gt) {}
#endif

#endif