1 // SPDX-License-Identifier: GPL-2.0-only
14 void perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus)  in perf_cpu_map__set_nr()  argument
16 	RC_CHK_ACCESS(map)->nr = nr_cpus;  in perf_cpu_map__set_nr()
25 		cpus->nr = nr_cpus;  in perf_cpu_map__alloc()
26 		refcount_set(&cpus->refcnt, 1);  in perf_cpu_map__alloc()
36 		RC_CHK_ACCESS(cpus)->map[0].cpu = -1;  in perf_cpu_map__new_any_cpu()
41 static void cpu_map__delete(struct perf_cpu_map *map)  in cpu_map__delete()  argument
43 	if (map) {  in cpu_map__delete()
44 		WARN_ONCE(refcount_read(perf_cpu_map__refcnt(map)) != 0,  in cpu_map__delete()
46 		RC_CHK_FREE(map);  in cpu_map__delete()
50 struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map)  in perf_cpu_map__get()  argument
54 	if (RC_CHK_GET(result, map))  in perf_cpu_map__get()
55 		refcount_inc(perf_cpu_map__refcnt(map));  in perf_cpu_map__get()
60 void perf_cpu_map__put(struct perf_cpu_map *map)  in perf_cpu_map__put()  argument
62 	if (map) {  in perf_cpu_map__put()
63 		if (refcount_dec_and_test(perf_cpu_map__refcnt(map)))  in perf_cpu_map__put()
64 			cpu_map__delete(map);  in perf_cpu_map__put()
66 			RC_CHK_PUT(map);  in perf_cpu_map__put()
81 …pr_warning("Number of online CPUs (%d) differs from the number configured (%d) the CPU map will on…  in cpu_map__new_sysconf()
90 			RC_CHK_ACCESS(cpus)->map[i].cpu = i;  in cpu_map__new_sysconf()
101 	onlnf = fopen("/sys/devices/system/cpu/online", "r");  in cpu_map__new_sysfs_online()
124 	return cpu_a->cpu - cpu_b->cpu;  in cmp_cpu()
129 	return RC_CHK_ACCESS(cpus)->map[idx];  in __perf_cpu_map__cpu()
139 		memcpy(RC_CHK_ACCESS(cpus)->map, tmp_cpus, payload_size);  in cpu_map__trim_new()
140 		qsort(RC_CHK_ACCESS(cpus)->map, nr_cpus, sizeof(struct perf_cpu), cmp_cpu);  in cpu_map__trim_new()
145 			    __perf_cpu_map__cpu(cpus, i).cpu !=  in cpu_map__trim_new()
146 			    __perf_cpu_map__cpu(cpus, i - 1).cpu) {  in cpu_map__trim_new()
147 				RC_CHK_ACCESS(cpus)->map[j++].cpu =  in cpu_map__trim_new()
148 					__perf_cpu_map__cpu(cpus, i).cpu;  in cpu_map__trim_new()
163 	int n, cpu, prev;  in perf_cpu_map__read()  local
167 	prev = -1;  in perf_cpu_map__read()
169 		n = fscanf(file, "%u%c", &cpu, &sep);  in perf_cpu_map__read()
173 			int new_max = nr_cpus + cpu - prev - 1;  in perf_cpu_map__read()
186 			while (++prev < cpu)  in perf_cpu_map__read()
187 				tmp_cpus[nr_cpus++].cpu = prev;  in perf_cpu_map__read()
197 		tmp_cpus[nr_cpus++].cpu = cpu;  in perf_cpu_map__read()
198 		if (n == 2 && sep == '-')  in perf_cpu_map__read()
199 			prev = cpu;  in perf_cpu_map__read()
201 			prev = -1;  in perf_cpu_map__read()
227 	 * TOPOLOGY header for NUMA nodes with no CPU  in perf_cpu_map__new()
228 	 * ( e.g., because of CPU hotplug)  in perf_cpu_map__new()
237 		    || (*p != '\0' && *p != ',' && *p != '-'))  in perf_cpu_map__new()
240 		if (*p == '-') {  in perf_cpu_map__new()
260 				if (tmp_cpus[i].cpu == (int)start_cpu)  in perf_cpu_map__new()
270 			tmp_cpus[nr_cpus++].cpu = (int)start_cpu;  in perf_cpu_map__new()
281 		pr_warning("Unexpected characters at end of cpu list ('%s'), using online CPUs.",  in perf_cpu_map__new()
294 	return RC_CHK_ACCESS(cpus)->nr;  in __perf_cpu_map__nr()
300 		.cpu = -1  in perf_cpu_map__cpu()
314 bool perf_cpu_map__has_any_cpu_or_is_empty(const struct perf_cpu_map *map)  in perf_cpu_map__has_any_cpu_or_is_empty()  argument
316 	return map ? __perf_cpu_map__cpu(map, 0).cpu == -1 : true;  in perf_cpu_map__has_any_cpu_or_is_empty()
319 int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu)  in perf_cpu_map__idx()  argument
324 		return -1;  in perf_cpu_map__idx()
332 		if (cpu_at_idx.cpu == cpu.cpu)  in perf_cpu_map__idx()
335 		if (cpu_at_idx.cpu > cpu.cpu)  in perf_cpu_map__idx()
341 	return -1;  in perf_cpu_map__idx()
344 bool perf_cpu_map__has(const struct perf_cpu_map *cpus, struct perf_cpu cpu)  in perf_cpu_map__has()  argument
346 	return perf_cpu_map__idx(cpus, cpu) != -1;  in perf_cpu_map__has()
364 		if (__perf_cpu_map__cpu(lhs, idx).cpu != __perf_cpu_map__cpu(rhs, idx).cpu)  in perf_cpu_map__equal()
370 bool perf_cpu_map__has_any_cpu(const struct perf_cpu_map *map)  in perf_cpu_map__has_any_cpu()  argument
372 	return map && __perf_cpu_map__cpu(map, 0).cpu == -1;  in perf_cpu_map__has_any_cpu()
375 struct perf_cpu perf_cpu_map__max(const struct perf_cpu_map *map)  in perf_cpu_map__max()  argument
378 		.cpu = -1  in perf_cpu_map__max()
382 	return __perf_cpu_map__nr(map) > 0  in perf_cpu_map__max()
383 		? __perf_cpu_map__cpu(map, __perf_cpu_map__nr(map) - 1)  in perf_cpu_map__max()
396 		if (__perf_cpu_map__cpu(a, i).cpu > __perf_cpu_map__cpu(b, j).cpu)  in perf_cpu_map__is_subset()
398 		if (__perf_cpu_map__cpu(a, i).cpu == __perf_cpu_map__cpu(b, j).cpu) {  in perf_cpu_map__is_subset()
410  * orig either gets freed and replaced with a new map, or reused
438 		if (__perf_cpu_map__cpu(orig, i).cpu <= __perf_cpu_map__cpu(other, j).cpu) {  in perf_cpu_map__merge()
439 			if (__perf_cpu_map__cpu(orig, i).cpu == __perf_cpu_map__cpu(other, j).cpu)  in perf_cpu_map__merge()
479 		if (__perf_cpu_map__cpu(orig, i).cpu < __perf_cpu_map__cpu(other, j).cpu)  in perf_cpu_map__intersect()
481 		else if (__perf_cpu_map__cpu(orig, i).cpu > __perf_cpu_map__cpu(other, j).cpu)  in perf_cpu_map__intersect()