perf/util/pmus.c

17 #include "pmu.h"
23  *             must have pmu->is_core=1. If there are more than one PMU in
33  *             must have pmu->is_core=0 but pmu->is_uncore could be 0 or 1.
69 	struct perf_pmu *pmu, *tmp;
71 	list_for_each_entry_safe(pmu, tmp, &core_pmus, list) {
72 		list_del(&pmu->list);
74 		perf_pmu__delete(pmu);
76 	list_for_each_entry_safe(pmu, tmp, &other_pmus, list) {
77 		list_del(&pmu->list);
79 		perf_pmu__delete(pmu);
87 	struct perf_pmu *pmu;
89 	list_for_each_entry(pmu, &core_pmus, list) {
90 		if (!strcmp(pmu->name, name) ||
91 		    (pmu->alias_name && !strcmp(pmu->alias_name, name)))
92 			return pmu;
94 	list_for_each_entry(pmu, &other_pmus, list) {
95 		if (!strcmp(pmu->name, name) ||
96 		    (pmu->alias_name && !strcmp(pmu->alias_name, name)))
97 			return pmu;
105 	struct perf_pmu *pmu;
112 	 * the pmu format definitions.
114 	pmu = pmu_find(name);
115 	if (pmu)
116 		return pmu;
126 	pmu = perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name);
129 	if (!pmu) {
135 		pmu = pmu_find(name);
137 	return pmu;
142 	struct perf_pmu *pmu;
148 	 * the pmu format definitions.
150 	pmu = pmu_find(name);
151 	if (pmu)
152 		return pmu;
183 /* Add all pmus in sysfs to pmu list: */
228 	struct perf_pmu *pmu;
230 	list_for_each_entry(pmu, &core_pmus, list) {
231 		if (pmu->type == type)
232 			return pmu;
235 	list_for_each_entry(pmu, &other_pmus, list) {
236 		if (pmu->type == type)
237 			return pmu;
244 	struct perf_pmu *pmu = __perf_pmus__find_by_type(type);
246 	if (pmu || read_sysfs_all_pmus)
247 		return pmu;
250 	pmu = __perf_pmus__find_by_type(type);
251 	return pmu;
255  * pmu iterator: If pmu is NULL, we start at the begin, otherwise return the
256  * next pmu. Returns NULL on end.
258 struct perf_pmu *perf_pmus__scan(struct perf_pmu *pmu)
260 	bool use_core_pmus = !pmu || pmu->is_core;
262 	if (!pmu) {
264 		pmu = list_prepare_entry(pmu, &core_pmus, list);
267 		list_for_each_entry_continue(pmu, &core_pmus, list)
268 			return pmu;
270 		pmu = NULL;
271 		pmu = list_prepare_entry(pmu, &other_pmus, list);
273 	list_for_each_entry_continue(pmu, &other_pmus, list)
274 		return pmu;
278 struct perf_pmu *perf_pmus__scan_core(struct perf_pmu *pmu)
280 	if (!pmu) {
282 		return list_first_entry_or_null(&core_pmus, typeof(*pmu), list);
284 	list_for_each_entry_continue(pmu, &core_pmus, list)
285 		return pmu;
290 static struct perf_pmu *perf_pmus__scan_skip_duplicates(struct perf_pmu *pmu)
292 	bool use_core_pmus = !pmu || pmu->is_core;
294 	const char *last_pmu_name = (pmu && pmu->name) ? pmu->name : "";
296 	if (!pmu) {
298 		pmu = list_prepare_entry(pmu, &core_pmus, list);
300 		last_pmu_name_len = pmu_name_len_no_suffix(pmu->name ?: "", NULL);
303 		list_for_each_entry_continue(pmu, &core_pmus, list) {
304 			int pmu_name_len = pmu_name_len_no_suffix(pmu->name ?: "", /*num=*/NULL);
307 			    !strncmp(last_pmu_name, pmu->name ?: "", pmu_name_len))
310 			return pmu;
312 		pmu = NULL;
313 		pmu = list_prepare_entry(pmu, &other_pmus, list);
315 	list_for_each_entry_continue(pmu, &other_pmus, list) {
316 		int pmu_name_len = pmu_name_len_no_suffix(pmu->name ?: "", /*num=*/NULL);
319 		    !strncmp(last_pmu_name, pmu->name ?: "", pmu_name_len))
322 		return pmu;
329 	struct perf_pmu *pmu = NULL;
331 	while ((pmu = perf_pmus__scan(pmu)) != NULL) {
332 		if (!strcmp(pmu->name, str))
333 			return pmu;
335 		if (!strncmp(pmu->name, "uncore_", 7)) {
336 			if (!strcmp(pmu->name + 7, str))
337 				return pmu;
340 		if (!strncmp(pmu->name, "cpu_", 4)) {
341 			if (!strcmp(pmu->name + 4, str))
342 				return pmu;
351 	const struct perf_pmu *pmu;
380 	a_iscpu = as->pmu ? as->pmu->is_core : true;
381 	b_iscpu = bs->pmu ? bs->pmu->is_core : true;
386 	if (as->pmu != bs->pmu) {
419 		pr_err("Unexpected event %s/%s/\n", info->pmu->name, info->name);
423 	s->pmu = info->pmu;
441 	struct perf_pmu *pmu;
454 	pmu = NULL;
456 	while ((pmu = scan_fn(pmu)) != NULL)
457 		len += perf_pmu__num_events(pmu);
464 	pmu = NULL;
470 	while ((pmu = scan_fn(pmu)) != NULL) {
471 		perf_pmu__for_each_event(pmu, skip_duplicate_pmus, &state,
508 	struct perf_pmu *pmu = perf_pmus__find(pname);
510 	return pmu && perf_pmu__have_event(pmu, name);
518 		struct perf_pmu *pmu = NULL;
520 		while ((pmu = perf_pmus__scan_core(pmu)) != NULL)
528 	struct perf_pmu *pmu = NULL;
533 	while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
534 		if (!is_event_supported(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES | ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT)))
592 	struct perf_pmu *pmu = evsel->pmu;
594 	if (!pmu) {
595 		pmu = perf_pmus__find_by_type(evsel->core.attr.type);
596 		((struct evsel *)evsel)->pmu = pmu;
598 	return pmu;