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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Igalia S.L.
*/
#include <linux/sched/clock.h>
#include <linux/sysfs.h>
#include "v3d_drv.h"
static ssize_t
gpu_stats_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct v3d_dev *v3d = to_v3d_dev(drm);
enum v3d_queue queue;
u64 timestamp = local_clock();
u64 active_runtime;
ssize_t len = 0;
len += sysfs_emit(buf, "queue\ttimestamp\tjobs\truntime\n");
for (queue = 0; queue < V3D_MAX_QUEUES; queue++) {
if (v3d->queue[queue].start_ns)
active_runtime = timestamp - v3d->queue[queue].start_ns;
else
active_runtime = 0;
/* Each line will display the queue name, timestamp, the number
* of jobs sent to that queue and the runtime, as can be seem here:
*
* queue timestamp jobs runtime
* bin 239043069420 22620 17438164056
* render 239043069420 22619 27284814161
* tfu 239043069420 8763 394592566
* csd 239043069420 3168 10787905530
* cache_clean 239043069420 6127 237375940
*/
len += sysfs_emit_at(buf, len, "%s\t%llu\t%llu\t%llu\n",
v3d_queue_to_string(queue),
timestamp,
v3d->queue[queue].jobs_sent,
v3d->queue[queue].enabled_ns + active_runtime);
}
return len;
}
static DEVICE_ATTR_RO(gpu_stats);
static struct attribute *v3d_sysfs_entries[] = {
&dev_attr_gpu_stats.attr,
NULL,
};
static struct attribute_group v3d_sysfs_attr_group = {
.attrs = v3d_sysfs_entries,
};
int
v3d_sysfs_init(struct device *dev)
{
return sysfs_create_group(&dev->kobj, &v3d_sysfs_attr_group);
}
void
v3d_sysfs_destroy(struct device *dev)
{
return sysfs_remove_group(&dev->kobj, &v3d_sysfs_attr_group);
}
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