drivers/gpu/drm/xe/xe_gt_stats.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/xe/xe_gt_stats.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/xe/xe_gt_stats.h
Extension
.h
Size
1417 bytes
Lines
65
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _XE_GT_STATS_H_
#define _XE_GT_STATS_H_

#include <linux/ktime.h>

#include "xe_gt_stats_types.h"

struct xe_gt;
struct drm_printer;

#ifdef CONFIG_DEBUG_FS
int xe_gt_stats_init(struct xe_gt *gt);
int xe_gt_stats_print_info(struct xe_gt *gt, struct drm_printer *p);
void xe_gt_stats_clear(struct xe_gt *gt);
void xe_gt_stats_incr(struct xe_gt *gt, const enum xe_gt_stats_id id, int incr);
#else
static inline int xe_gt_stats_init(struct xe_gt *gt)
{
	return 0;
}

static inline void
xe_gt_stats_incr(struct xe_gt *gt, const enum xe_gt_stats_id id,
		 int incr)
{
}

#endif

/**
 * xe_gt_stats_ktime_us_delta() - Get delta in microseconds between now and a
 * start time
 * @start: Start time
 *
 * Helper for GT stats to get delta in microseconds between now and a start
 * time, compiles out if GT stats are disabled.
 *
 * Return: Delta in microseconds between now and a start time
 */
static inline s64 xe_gt_stats_ktime_us_delta(ktime_t start)
{
	return IS_ENABLED(CONFIG_DEBUG_FS) ?
		ktime_us_delta(ktime_get(), start) : 0;
}

/**
 * xe_gt_stats_ktime_get() - Get current ktime
 *
 * Helper for GT stats to get current ktime, compiles out if GT stats are
 * disabled.
 *
 * Return: Get current ktime
 */
static inline ktime_t xe_gt_stats_ktime_get(void)
{
	return IS_ENABLED(CONFIG_DEBUG_FS) ? ktime_get() : 0;
}

#endif

Annotation

Implementation Notes