1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2023 Igalia S.L. 4 */ 5 6 #include <linux/sched/clock.h> 7 #include <linux/sysfs.h> 8 9 #include "v3d_drv.h" 10 11 static ssize_t 12 gpu_stats_show(struct device *dev, struct device_attribute *attr, char *buf) 13 { 14 struct drm_device *drm = dev_get_drvdata(dev); 15 struct v3d_dev *v3d = to_v3d_dev(drm); 16 enum v3d_queue queue; 17 u64 timestamp = local_clock(); 18 ssize_t len = 0; 19 20 len += sysfs_emit(buf, "queue\ttimestamp\tjobs\truntime\n"); 21 22 for (queue = 0; queue < V3D_MAX_QUEUES; queue++) { 23 struct v3d_stats *stats = &v3d->queue[queue].stats; 24 u64 active_runtime, jobs_completed; 25 26 v3d_get_stats(stats, timestamp, &active_runtime, &jobs_completed); 27 28 /* Each line will display the queue name, timestamp, the number 29 * of jobs sent to that queue and the runtime, as can be seem here: 30 * 31 * queue timestamp jobs runtime 32 * bin 239043069420 22620 17438164056 33 * render 239043069420 22619 27284814161 34 * tfu 239043069420 8763 394592566 35 * csd 239043069420 3168 10787905530 36 * cache_clean 239043069420 6127 237375940 37 */ 38 len += sysfs_emit_at(buf, len, "%s\t%llu\t%llu\t%llu\n", 39 v3d_queue_to_string(queue), 40 timestamp, jobs_completed, active_runtime); 41 } 42 43 return len; 44 } 45 static DEVICE_ATTR_RO(gpu_stats); 46 47 static struct attribute *v3d_sysfs_entries[] = { 48 &dev_attr_gpu_stats.attr, 49 NULL, 50 }; 51 52 static struct attribute_group v3d_sysfs_attr_group = { 53 .attrs = v3d_sysfs_entries, 54 }; 55 56 int 57 v3d_sysfs_init(struct device *dev) 58 { 59 return sysfs_create_group(&dev->kobj, &v3d_sysfs_attr_group); 60 } 61 62 void 63 v3d_sysfs_destroy(struct device *dev) 64 { 65 return sysfs_remove_group(&dev->kobj, &v3d_sysfs_attr_group); 66 } 67