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 u64 active_runtime; 19 ssize_t len = 0; 20 21 len += sysfs_emit(buf, "queue\ttimestamp\tjobs\truntime\n"); 22 23 for (queue = 0; queue < V3D_MAX_QUEUES; queue++) { 24 if (v3d->queue[queue].start_ns) 25 active_runtime = timestamp - v3d->queue[queue].start_ns; 26 else 27 active_runtime = 0; 28 29 /* Each line will display the queue name, timestamp, the number 30 * of jobs sent to that queue and the runtime, as can be seem here: 31 * 32 * queue timestamp jobs runtime 33 * bin 239043069420 22620 17438164056 34 * render 239043069420 22619 27284814161 35 * tfu 239043069420 8763 394592566 36 * csd 239043069420 3168 10787905530 37 * cache_clean 239043069420 6127 237375940 38 */ 39 len += sysfs_emit_at(buf, len, "%s\t%llu\t%llu\t%llu\n", 40 v3d_queue_to_string(queue), 41 timestamp, 42 v3d->queue[queue].jobs_sent, 43 v3d->queue[queue].enabled_ns + active_runtime); 44 } 45 46 return len; 47 } 48 static DEVICE_ATTR_RO(gpu_stats); 49 50 static struct attribute *v3d_sysfs_entries[] = { 51 &dev_attr_gpu_stats.attr, 52 NULL, 53 }; 54 55 static struct attribute_group v3d_sysfs_attr_group = { 56 .attrs = v3d_sysfs_entries, 57 }; 58 59 int 60 v3d_sysfs_init(struct device *dev) 61 { 62 return sysfs_create_group(&dev->kobj, &v3d_sysfs_attr_group); 63 } 64 65 void 66 v3d_sysfs_destroy(struct device *dev) 67 { 68 return sysfs_remove_group(&dev->kobj, &v3d_sysfs_attr_group); 69 } 70