xref: /linux/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c (revision 26fbb4c8c7c3ee9a4c3b4de555a8587b5a19154e)
1 /*
2  * Copyright 2019 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #include <linux/perf_event.h>
25 #include <linux/init.h>
26 #include "amdgpu.h"
27 #include "amdgpu_pmu.h"
28 
29 #define PMU_NAME_SIZE 32
30 #define NUM_FORMATS_AMDGPU_PMU		4
31 #define NUM_FORMATS_DF_VEGA20		3
32 #define NUM_EVENTS_DF_VEGA20		8
33 #define NUM_EVENT_TYPES_VEGA20		1
34 #define NUM_EVENTS_VEGA20_XGMI		2
35 #define NUM_EVENTS_VEGA20_MAX		NUM_EVENTS_VEGA20_XGMI
36 #define NUM_EVENT_TYPES_ARCTURUS	1
37 #define NUM_EVENTS_ARCTURUS_XGMI	6
38 #define NUM_EVENTS_ARCTURUS_MAX		NUM_EVENTS_ARCTURUS_XGMI
39 
40 struct amdgpu_pmu_event_attribute {
41 	struct device_attribute attr;
42 	const char *event_str;
43 	unsigned int type;
44 };
45 
46 /* record to keep track of pmu entry per pmu type per device */
47 struct amdgpu_pmu_entry {
48 	struct list_head entry;
49 	struct amdgpu_device *adev;
50 	struct pmu pmu;
51 	unsigned int pmu_perf_type;
52 	char *pmu_type_name;
53 	char *pmu_file_prefix;
54 	struct attribute_group fmt_attr_group;
55 	struct amdgpu_pmu_event_attribute *fmt_attr;
56 	struct attribute_group evt_attr_group;
57 	struct amdgpu_pmu_event_attribute *evt_attr;
58 };
59 
60 static ssize_t amdgpu_pmu_event_show(struct device *dev,
61 				struct device_attribute *attr, char *buf)
62 {
63 	struct amdgpu_pmu_event_attribute *amdgpu_pmu_attr;
64 
65 	amdgpu_pmu_attr = container_of(attr, struct amdgpu_pmu_event_attribute,
66 									attr);
67 
68 	if (!amdgpu_pmu_attr->type)
69 		return sprintf(buf, "%s\n", amdgpu_pmu_attr->event_str);
70 
71 	return sprintf(buf, "%s,type=0x%x\n",
72 			amdgpu_pmu_attr->event_str, amdgpu_pmu_attr->type);
73 }
74 
75 static LIST_HEAD(amdgpu_pmu_list);
76 
77 
78 struct amdgpu_pmu_attr {
79 	const char *name;
80 	const char *config;
81 };
82 
83 struct amdgpu_pmu_type {
84 	const unsigned int type;
85 	const unsigned int num_of_type;
86 };
87 
88 struct amdgpu_pmu_config {
89 	struct amdgpu_pmu_attr *formats;
90 	unsigned int num_formats;
91 	struct amdgpu_pmu_attr *events;
92 	unsigned int num_events;
93 	struct amdgpu_pmu_type *types;
94 	unsigned int num_types;
95 };
96 
97 /*
98  * Events fall under two categories:
99  *  - PMU typed
100  *    Events in /sys/bus/event_source/devices/amdgpu_<pmu_type>_<dev_num> have
101  *    performance counter operations handled by one IP <pmu_type>.  Formats and
102  *    events should be defined by <pmu_type>_<asic_type>_formats and
103  *    <pmu_type>_<asic_type>_events respectively.
104  *
105  *  - Event config typed
106  *    Events in /sys/bus/event_source/devices/amdgpu_<dev_num> have performance
107  *    counter operations that can be handled by multiple IPs dictated by their
108  *    "type" format field.  Formats and events should be defined by
109  *    amdgpu_pmu_formats and <asic_type>_events respectively.  Format field
110  *    "type" is generated in amdgpu_pmu_event_show and defined in
111  *    <asic_type>_event_config_types.
112  */
113 
114 static struct amdgpu_pmu_attr amdgpu_pmu_formats[NUM_FORMATS_AMDGPU_PMU] = {
115 	{ .name = "event", .config = "config:0-7" },
116 	{ .name = "instance", .config = "config:8-15" },
117 	{ .name = "umask", .config = "config:16-23"},
118 	{ .name = "type", .config = "config:56-63"}
119 };
120 
121 /* Vega20 events */
122 static struct amdgpu_pmu_attr vega20_events[NUM_EVENTS_VEGA20_MAX] = {
123 	{ .name = "xgmi_link0_data_outbound",
124 			.config = "event=0x7,instance=0x46,umask=0x2" },
125 	{ .name = "xgmi_link1_data_outbound",
126 			.config = "event=0x7,instance=0x47,umask=0x2" }
127 };
128 
129 static struct amdgpu_pmu_type vega20_types[NUM_EVENT_TYPES_VEGA20] = {
130 	{ .type = AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI,
131 					.num_of_type = NUM_EVENTS_VEGA20_XGMI }
132 };
133 
134 static struct amdgpu_pmu_config vega20_config = {
135 	.formats = amdgpu_pmu_formats,
136 	.num_formats = ARRAY_SIZE(amdgpu_pmu_formats),
137 	.events = vega20_events,
138 	.num_events = ARRAY_SIZE(vega20_events),
139 	.types = vega20_types,
140 	.num_types = ARRAY_SIZE(vega20_types)
141 };
142 
143 /* Vega20 data fabric (DF) events */
144 static struct amdgpu_pmu_attr df_vega20_formats[NUM_FORMATS_DF_VEGA20] = {
145 	{ .name = "event", .config = "config:0-7" },
146 	{ .name = "instance", .config = "config:8-15" },
147 	{ .name = "umask", .config = "config:16-23"}
148 };
149 
150 static struct amdgpu_pmu_attr df_vega20_events[NUM_EVENTS_DF_VEGA20] = {
151 	{ .name = "cake0_pcsout_txdata",
152 			.config = "event=0x7,instance=0x46,umask=0x2" },
153 	{ .name = "cake1_pcsout_txdata",
154 			.config = "event=0x7,instance=0x47,umask=0x2" },
155 	{ .name = "cake0_pcsout_txmeta",
156 			.config = "event=0x7,instance=0x46,umask=0x4" },
157 	{ .name = "cake1_pcsout_txmeta",
158 			.config = "event=0x7,instance=0x47,umask=0x4" },
159 	{ .name = "cake0_ftiinstat_reqalloc",
160 			.config = "event=0xb,instance=0x46,umask=0x4" },
161 	{ .name = "cake1_ftiinstat_reqalloc",
162 			.config = "event=0xb,instance=0x47,umask=0x4" },
163 	{ .name = "cake0_ftiinstat_rspalloc",
164 			.config = "event=0xb,instance=0x46,umask=0x8" },
165 	{ .name = "cake1_ftiinstat_rspalloc",
166 			.config = "event=0xb,instance=0x47,umask=0x8" }
167 };
168 
169 static struct amdgpu_pmu_config df_vega20_config = {
170 	.formats = df_vega20_formats,
171 	.num_formats = ARRAY_SIZE(df_vega20_formats),
172 	.events = df_vega20_events,
173 	.num_events = ARRAY_SIZE(df_vega20_events),
174 	.types = NULL,
175 	.num_types = 0
176 };
177 
178 /* Arcturus events */
179 static struct amdgpu_pmu_attr arcturus_events[NUM_EVENTS_ARCTURUS_MAX] = {
180 	{ .name = "xgmi_link0_data_outbound",
181 			.config = "event=0x7,instance=0x4b,umask=0x2" },
182 	{ .name = "xgmi_link1_data_outbound",
183 			.config = "event=0x7,instance=0x4c,umask=0x2" },
184 	{ .name = "xgmi_link2_data_outbound",
185 			.config = "event=0x7,instance=0x4d,umask=0x2" },
186 	{ .name = "xgmi_link3_data_outbound",
187 			.config = "event=0x7,instance=0x4e,umask=0x2" },
188 	{ .name = "xgmi_link4_data_outbound",
189 			.config = "event=0x7,instance=0x4f,umask=0x2" },
190 	{ .name = "xgmi_link5_data_outbound",
191 			.config = "event=0x7,instance=0x50,umask=0x2" }
192 };
193 
194 static struct amdgpu_pmu_type arcturus_types[NUM_EVENT_TYPES_ARCTURUS] = {
195 	{ .type = AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI,
196 				.num_of_type = NUM_EVENTS_ARCTURUS_XGMI }
197 };
198 
199 static struct amdgpu_pmu_config arcturus_config = {
200 	.formats = amdgpu_pmu_formats,
201 	.num_formats = ARRAY_SIZE(amdgpu_pmu_formats),
202 	.events = arcturus_events,
203 	.num_events = ARRAY_SIZE(arcturus_events),
204 	.types = arcturus_types,
205 	.num_types = ARRAY_SIZE(arcturus_types)
206 };
207 
208 /* initialize perf counter */
209 static int amdgpu_perf_event_init(struct perf_event *event)
210 {
211 	struct hw_perf_event *hwc = &event->hw;
212 
213 	/* test the event attr type check for PMU enumeration */
214 	if (event->attr.type != event->pmu->type)
215 		return -ENOENT;
216 
217 	/* update the hw_perf_event struct with config data */
218 	hwc->config = event->attr.config;
219 	hwc->config_base = AMDGPU_PMU_PERF_TYPE_NONE;
220 
221 	return 0;
222 }
223 
224 /* start perf counter */
225 static void amdgpu_perf_start(struct perf_event *event, int flags)
226 {
227 	struct hw_perf_event *hwc = &event->hw;
228 	struct amdgpu_pmu_entry *pe = container_of(event->pmu,
229 						  struct amdgpu_pmu_entry,
230 						  pmu);
231 	int target_cntr = 0;
232 
233 	if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED)))
234 		return;
235 
236 	WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE));
237 	hwc->state = 0;
238 
239 	switch (hwc->config_base) {
240 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF:
241 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI:
242 		if (!(flags & PERF_EF_RELOAD)) {
243 			target_cntr = pe->adev->df.funcs->pmc_start(pe->adev,
244 						hwc->config, 0 /* unused */,
245 						1 /* add counter */);
246 			if (target_cntr < 0)
247 				break;
248 
249 			hwc->idx = target_cntr;
250 		}
251 
252 		pe->adev->df.funcs->pmc_start(pe->adev, hwc->config,
253 								hwc->idx, 0);
254 		break;
255 	default:
256 		break;
257 	}
258 
259 	perf_event_update_userpage(event);
260 }
261 
262 /* read perf counter */
263 static void amdgpu_perf_read(struct perf_event *event)
264 {
265 	struct hw_perf_event *hwc = &event->hw;
266 	struct amdgpu_pmu_entry *pe = container_of(event->pmu,
267 						  struct amdgpu_pmu_entry,
268 						  pmu);
269 	u64 count, prev;
270 
271 	do {
272 		prev = local64_read(&hwc->prev_count);
273 
274 		switch (hwc->config_base) {
275 		case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF:
276 		case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI:
277 			pe->adev->df.funcs->pmc_get_count(pe->adev,
278 						hwc->config, hwc->idx, &count);
279 			break;
280 		default:
281 			count = 0;
282 			break;
283 		}
284 	} while (local64_cmpxchg(&hwc->prev_count, prev, count) != prev);
285 
286 	local64_add(count - prev, &event->count);
287 }
288 
289 /* stop perf counter */
290 static void amdgpu_perf_stop(struct perf_event *event, int flags)
291 {
292 	struct hw_perf_event *hwc = &event->hw;
293 	struct amdgpu_pmu_entry *pe = container_of(event->pmu,
294 						  struct amdgpu_pmu_entry,
295 						  pmu);
296 
297 	if (hwc->state & PERF_HES_UPTODATE)
298 		return;
299 
300 	switch (hwc->config_base) {
301 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF:
302 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI:
303 		pe->adev->df.funcs->pmc_stop(pe->adev, hwc->config, hwc->idx,
304 									0);
305 		break;
306 	default:
307 		break;
308 	}
309 
310 	WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED);
311 	hwc->state |= PERF_HES_STOPPED;
312 
313 	if (hwc->state & PERF_HES_UPTODATE)
314 		return;
315 
316 	amdgpu_perf_read(event);
317 	hwc->state |= PERF_HES_UPTODATE;
318 }
319 
320 /* add perf counter */
321 static int amdgpu_perf_add(struct perf_event *event, int flags)
322 {
323 	struct hw_perf_event *hwc = &event->hw;
324 	int retval = 0, target_cntr;
325 	struct amdgpu_pmu_entry *pe = container_of(event->pmu,
326 						  struct amdgpu_pmu_entry,
327 						  pmu);
328 
329 	switch (pe->pmu_perf_type) {
330 	case AMDGPU_PMU_PERF_TYPE_DF:
331 		hwc->config_base = AMDGPU_PMU_EVENT_CONFIG_TYPE_DF;
332 		break;
333 	case AMDGPU_PMU_PERF_TYPE_ALL:
334 		hwc->config_base = (hwc->config >>
335 					AMDGPU_PMU_EVENT_CONFIG_TYPE_SHIFT) &
336 					AMDGPU_PMU_EVENT_CONFIG_TYPE_MASK;
337 		break;
338 	}
339 
340 	event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
341 
342 	switch (hwc->config_base) {
343 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF:
344 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI:
345 		target_cntr = pe->adev->df.funcs->pmc_start(pe->adev,
346 						hwc->config, 0 /* unused */,
347 						1 /* add counter */);
348 		if (target_cntr < 0)
349 			retval = target_cntr;
350 		else
351 			hwc->idx = target_cntr;
352 
353 		break;
354 	default:
355 		return 0;
356 	}
357 
358 	if (retval)
359 		return retval;
360 
361 	if (flags & PERF_EF_START)
362 		amdgpu_perf_start(event, PERF_EF_RELOAD);
363 
364 	return retval;
365 }
366 
367 /* delete perf counter  */
368 static void amdgpu_perf_del(struct perf_event *event, int flags)
369 {
370 	struct hw_perf_event *hwc = &event->hw;
371 	struct amdgpu_pmu_entry *pe = container_of(event->pmu,
372 						  struct amdgpu_pmu_entry,
373 						  pmu);
374 
375 	amdgpu_perf_stop(event, PERF_EF_UPDATE);
376 
377 	switch (hwc->config_base) {
378 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF:
379 	case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI:
380 		pe->adev->df.funcs->pmc_stop(pe->adev, hwc->config, hwc->idx,
381 									1);
382 		break;
383 	default:
384 		break;
385 	}
386 
387 	perf_event_update_userpage(event);
388 }
389 
390 static void amdgpu_pmu_create_event_attrs_by_type(
391 				struct attribute_group *attr_group,
392 				struct amdgpu_pmu_event_attribute *pmu_attr,
393 				struct amdgpu_pmu_attr events[],
394 				int s_offset,
395 				int e_offset,
396 				unsigned int type)
397 {
398 	int i;
399 
400 	pmu_attr += s_offset;
401 
402 	for (i = s_offset; i < e_offset; i++) {
403 		attr_group->attrs[i] = &pmu_attr->attr.attr;
404 		sysfs_attr_init(&pmu_attr->attr.attr);
405 		pmu_attr->attr.attr.name = events[i].name;
406 		pmu_attr->attr.attr.mode = 0444;
407 		pmu_attr->attr.show = amdgpu_pmu_event_show;
408 		pmu_attr->event_str = events[i].config;
409 		pmu_attr->type = type;
410 		pmu_attr++;
411 	}
412 }
413 
414 static void amdgpu_pmu_create_attrs(struct attribute_group *attr_group,
415 				struct amdgpu_pmu_event_attribute *pmu_attr,
416 				struct amdgpu_pmu_attr events[],
417 				int num_events)
418 {
419 	amdgpu_pmu_create_event_attrs_by_type(attr_group, pmu_attr, events, 0,
420 				num_events, AMDGPU_PMU_EVENT_CONFIG_TYPE_NONE);
421 }
422 
423 
424 static int amdgpu_pmu_alloc_pmu_attrs(
425 				struct attribute_group *fmt_attr_group,
426 				struct amdgpu_pmu_event_attribute **fmt_attr,
427 				struct attribute_group *evt_attr_group,
428 				struct amdgpu_pmu_event_attribute **evt_attr,
429 				struct amdgpu_pmu_config *config)
430 {
431 	*fmt_attr = kcalloc(config->num_formats, sizeof(**fmt_attr),
432 								GFP_KERNEL);
433 
434 	if (!(*fmt_attr))
435 		return -ENOMEM;
436 
437 	fmt_attr_group->attrs = kcalloc(config->num_formats + 1,
438 				sizeof(*fmt_attr_group->attrs), GFP_KERNEL);
439 
440 	if (!fmt_attr_group->attrs)
441 		goto err_fmt_attr_grp;
442 
443 	*evt_attr = kcalloc(config->num_events, sizeof(**evt_attr), GFP_KERNEL);
444 
445 	if (!(*evt_attr))
446 		goto err_evt_attr;
447 
448 	evt_attr_group->attrs = kcalloc(config->num_events + 1,
449 				sizeof(*evt_attr_group->attrs), GFP_KERNEL);
450 
451 	if (!evt_attr_group->attrs)
452 		goto err_evt_attr_grp;
453 
454 	return 0;
455 err_evt_attr_grp:
456 	kfree(*evt_attr);
457 err_evt_attr:
458 	kfree(fmt_attr_group->attrs);
459 err_fmt_attr_grp:
460 	kfree(*fmt_attr);
461 	return -ENOMEM;
462 }
463 
464 /* init pmu tracking per pmu type */
465 static int init_pmu_entry_by_type_and_add(struct amdgpu_pmu_entry *pmu_entry,
466 			struct amdgpu_pmu_config *config)
467 {
468 	const struct attribute_group *attr_groups[] = {
469 		&pmu_entry->fmt_attr_group,
470 		&pmu_entry->evt_attr_group,
471 		NULL
472 	};
473 	char pmu_name[PMU_NAME_SIZE];
474 	int ret = 0, total_num_events = 0;
475 
476 	pmu_entry->pmu = (struct pmu){
477 		.event_init = amdgpu_perf_event_init,
478 		.add = amdgpu_perf_add,
479 		.del = amdgpu_perf_del,
480 		.start = amdgpu_perf_start,
481 		.stop = amdgpu_perf_stop,
482 		.read = amdgpu_perf_read,
483 		.task_ctx_nr = perf_invalid_context,
484 	};
485 
486 	ret = amdgpu_pmu_alloc_pmu_attrs(&pmu_entry->fmt_attr_group,
487 					&pmu_entry->fmt_attr,
488 					&pmu_entry->evt_attr_group,
489 					&pmu_entry->evt_attr,
490 					config);
491 
492 	if (ret)
493 		goto err_out;
494 
495 	amdgpu_pmu_create_attrs(&pmu_entry->fmt_attr_group, pmu_entry->fmt_attr,
496 					config->formats, config->num_formats);
497 
498 	if (pmu_entry->pmu_perf_type == AMDGPU_PMU_PERF_TYPE_ALL) {
499 		int i;
500 
501 		for (i = 0; i < config->num_types; i++) {
502 			amdgpu_pmu_create_event_attrs_by_type(
503 					&pmu_entry->evt_attr_group,
504 					pmu_entry->evt_attr,
505 					config->events,
506 					total_num_events,
507 					total_num_events +
508 						config->types[i].num_of_type,
509 					config->types[i].type);
510 			total_num_events += config->types[i].num_of_type;
511 		}
512 	} else {
513 		amdgpu_pmu_create_attrs(&pmu_entry->evt_attr_group,
514 					pmu_entry->evt_attr,
515 					config->events, config->num_events);
516 		total_num_events = config->num_events;
517 	}
518 
519 	pmu_entry->pmu.attr_groups = kmemdup(attr_groups, sizeof(attr_groups),
520 								GFP_KERNEL);
521 
522 	if (!pmu_entry->pmu.attr_groups)
523 		goto err_attr_group;
524 
525 	snprintf(pmu_name, PMU_NAME_SIZE, "%s_%d", pmu_entry->pmu_file_prefix,
526 				adev_to_drm(pmu_entry->adev)->primary->index);
527 
528 	ret = perf_pmu_register(&pmu_entry->pmu, pmu_name, -1);
529 
530 	if (ret)
531 		goto err_register;
532 
533 	if (pmu_entry->pmu_perf_type != AMDGPU_PMU_PERF_TYPE_ALL)
534 		pr_info("Detected AMDGPU %s Counters. # of Counters = %d.\n",
535 				pmu_entry->pmu_type_name, total_num_events);
536 	else
537 		pr_info("Detected AMDGPU %d Perf Events.\n", total_num_events);
538 
539 
540 	list_add_tail(&pmu_entry->entry, &amdgpu_pmu_list);
541 
542 	return 0;
543 err_register:
544 	kfree(pmu_entry->pmu.attr_groups);
545 err_attr_group:
546 	kfree(pmu_entry->fmt_attr_group.attrs);
547 	kfree(pmu_entry->fmt_attr);
548 	kfree(pmu_entry->evt_attr_group.attrs);
549 	kfree(pmu_entry->evt_attr);
550 err_out:
551 	pr_warn("Error initializing AMDGPU %s PMUs.\n",
552 						pmu_entry->pmu_type_name);
553 	return ret;
554 }
555 
556 /* destroy all pmu data associated with target device */
557 void amdgpu_pmu_fini(struct amdgpu_device *adev)
558 {
559 	struct amdgpu_pmu_entry *pe, *temp;
560 
561 	list_for_each_entry_safe(pe, temp, &amdgpu_pmu_list, entry) {
562 		if (pe->adev != adev)
563 			continue;
564 		list_del(&pe->entry);
565 		perf_pmu_unregister(&pe->pmu);
566 		kfree(pe->pmu.attr_groups);
567 		kfree(pe->fmt_attr_group.attrs);
568 		kfree(pe->fmt_attr);
569 		kfree(pe->evt_attr_group.attrs);
570 		kfree(pe->evt_attr);
571 		kfree(pe);
572 	}
573 }
574 
575 static struct amdgpu_pmu_entry *create_pmu_entry(struct amdgpu_device *adev,
576 						unsigned int pmu_type,
577 						char *pmu_type_name,
578 						char *pmu_file_prefix)
579 {
580 	struct amdgpu_pmu_entry *pmu_entry;
581 
582 	pmu_entry = kzalloc(sizeof(struct amdgpu_pmu_entry), GFP_KERNEL);
583 
584 	if (!pmu_entry)
585 		return pmu_entry;
586 
587 	pmu_entry->adev = adev;
588 	pmu_entry->fmt_attr_group.name = "format";
589 	pmu_entry->fmt_attr_group.attrs = NULL;
590 	pmu_entry->evt_attr_group.name = "events";
591 	pmu_entry->evt_attr_group.attrs = NULL;
592 	pmu_entry->pmu_perf_type = pmu_type;
593 	pmu_entry->pmu_type_name = pmu_type_name;
594 	pmu_entry->pmu_file_prefix = pmu_file_prefix;
595 
596 	return pmu_entry;
597 }
598 
599 /* init amdgpu_pmu */
600 int amdgpu_pmu_init(struct amdgpu_device *adev)
601 {
602 	int ret = 0;
603 	struct amdgpu_pmu_entry *pmu_entry, *pmu_entry_df;
604 
605 	switch (adev->asic_type) {
606 	case CHIP_VEGA20:
607 		pmu_entry_df = create_pmu_entry(adev, AMDGPU_PMU_PERF_TYPE_DF,
608 						"DF", "amdgpu_df");
609 
610 		if (!pmu_entry_df)
611 			return -ENOMEM;
612 
613 		ret = init_pmu_entry_by_type_and_add(pmu_entry_df,
614 							&df_vega20_config);
615 
616 		if (ret) {
617 			kfree(pmu_entry_df);
618 			return ret;
619 		}
620 
621 		pmu_entry = create_pmu_entry(adev, AMDGPU_PMU_PERF_TYPE_ALL,
622 						"", "amdgpu");
623 
624 		if (!pmu_entry) {
625 			amdgpu_pmu_fini(adev);
626 			return -ENOMEM;
627 		}
628 
629 		ret = init_pmu_entry_by_type_and_add(pmu_entry,
630 							&vega20_config);
631 
632 		if (ret) {
633 			kfree(pmu_entry);
634 			amdgpu_pmu_fini(adev);
635 			return ret;
636 		}
637 
638 		break;
639 	case CHIP_ARCTURUS:
640 		pmu_entry = create_pmu_entry(adev, AMDGPU_PMU_PERF_TYPE_ALL,
641 						"", "amdgpu");
642 		if (!pmu_entry)
643 			return -ENOMEM;
644 
645 		ret = init_pmu_entry_by_type_and_add(pmu_entry,
646 							&arcturus_config);
647 
648 		if (ret) {
649 			kfree(pmu_entry);
650 			return -ENOMEM;
651 		}
652 
653 		break;
654 
655 	default:
656 		return 0;
657 	}
658 
659 	return ret;
660 }
661