// 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); }