1 // SPDX-License-Identifier: GPL-2.0-only
7 #include "print-events.h"
9 #include "time-utils.h"
88 	return pmu && pmu->type == PERF_PMU_TYPE_TOOL;  in perf_pmu__is_tool()
93 	return perf_pmu__is_tool(evsel->pmu);  in evsel__is_tool()
101 	return (enum tool_pmu_event)evsel->core.attr.config;  in evsel__tool_event()
106 	return tool_pmu__event_to_str(evsel->core.attr.config);  in evsel__tool_pmu_event_name()
115 		if (c == -1)  in read_until_char()
121 static int read_stat_field(int fd, struct perf_cpu cpu, int field, __u64 *val)  in read_stat_field()  argument
127 	io__init(&io, fd, buf, sizeof(buf));  in read_stat_field()
130 	for (i = -1; i < cpu.cpu; i++) {  in read_stat_field()
132 			return -EINVAL;  in read_stat_field()
135 	if (io__get_char(&io) != 'c') return -EINVAL;  in read_stat_field()
136 	if (io__get_char(&io) != 'p') return -EINVAL;  in read_stat_field()
137 	if (io__get_char(&io) != 'u') return -EINVAL;  in read_stat_field()
141 		return -EINVAL;  in read_stat_field()
151 	return -EINVAL;  in read_stat_field()
154 static int read_pid_stat_field(int fd, int field, __u64 *val)  in read_pid_stat_field()  argument
160 	io__init(&io, fd, buf, sizeof(buf));  in read_pid_stat_field()
162 		return -EINVAL;  in read_pid_stat_field()
168 		return -EINVAL;  in read_pid_stat_field()
170 		return -EINVAL; /* String can't be returned. */  in read_pid_stat_field()
173 	if (io__get_char(&io) != ' ' || io__get_char(&io) == -1)  in read_pid_stat_field()
174 		return -EINVAL;  in read_pid_stat_field()
176 		return -EINVAL; /* String can't be returned. */  in read_pid_stat_field()
180 		return -EINVAL;  in read_pid_stat_field()
185 		if (c == -1)  in read_pid_stat_field()
186 			return -EINVAL;  in read_pid_stat_field()
187 		if (c == -2) {  in read_pid_stat_field()
188 			/* Assume a -ve was read */  in read_pid_stat_field()
190 			*val *= -1;  in read_pid_stat_field()
193 			return -EINVAL;  in read_pid_stat_field()
198 	return -EINVAL;  in read_pid_stat_field()
207 	    !evsel->start_times) {  in evsel__tool_pmu_prepare_open()
208 		evsel->start_times = xyarray__new(perf_cpu_map__nr(cpus),  in evsel__tool_pmu_prepare_open()
211 		if (!evsel->start_times)  in evsel__tool_pmu_prepare_open()
212 			return -ENOMEM;  in evsel__tool_pmu_prepare_open()
217 #define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y))  macro
224 	int pid = -1, idx = 0, thread = 0, nthreads, err = 0, old_errno;  in evsel__tool_pmu_open()
230 		if (evsel->core.attr.sample_period) /* no sampling */  in evsel__tool_pmu_open()
231 			return -EINVAL;  in evsel__tool_pmu_open()
232 		evsel->start_time = rdclock();  in evsel__tool_pmu_open()
236 	if (evsel->cgrp)  in evsel__tool_pmu_open()
237 		pid = evsel->cgrp->fd;  in evsel__tool_pmu_open()
242 			if (!evsel->cgrp && !evsel->core.system_wide)  in evsel__tool_pmu_open()
248 				int fd;  in evsel__tool_pmu_open()  local
250 				if (evsel->core.attr.sample_period) {  in evsel__tool_pmu_open()
251 					/* no sampling */  in evsel__tool_pmu_open()
252 					err = -EINVAL;  in evsel__tool_pmu_open()
255 				if (pid > -1) {  in evsel__tool_pmu_open()
259 					fd = open(buf, O_RDONLY);  in evsel__tool_pmu_open()
260 					evsel->pid_stat = true;  in evsel__tool_pmu_open()
262 					fd = open("/proc/stat", O_RDONLY);  in evsel__tool_pmu_open()
264 				FD(evsel, idx, thread) = fd;  in evsel__tool_pmu_open()
265 				if (fd < 0) {  in evsel__tool_pmu_open()
266 					err = -errno;  in evsel__tool_pmu_open()
269 				start_time = xyarray__entry(evsel->start_times, idx, thread);  in evsel__tool_pmu_open()
270 				if (pid > -1) {  in evsel__tool_pmu_open()
271 					err = read_pid_stat_field(fd, system ? 15 : 14,  in evsel__tool_pmu_open()
276 					cpu = perf_cpu_map__cpu(evsel->core.cpus, idx);  in evsel__tool_pmu_open()
277 					err = read_stat_field(fd, cpu, system ? 3 : 1,  in evsel__tool_pmu_open()
289 		threads->err_thread = thread;  in evsel__tool_pmu_open()
293 		while (--thread >= 0) {  in evsel__tool_pmu_open()
294 			if (FD(evsel, idx, thread) >= 0)  in evsel__tool_pmu_open()
295 				close(FD(evsel, idx, thread));  in evsel__tool_pmu_open()
296 			FD(evsel, idx, thread) = -1;  in evsel__tool_pmu_open()
299 	} while (--idx >= 0);  in evsel__tool_pmu_open()
343 		*result = topology->core_cpus_lists;  in tool_pmu__read_event()
347 		if (!evsel || perf_cpu_map__is_empty(evsel->core.cpus)) {  in tool_pmu__read_event()
348 			/* No evsel to be specific to. */  in tool_pmu__read_event()
350 		} else if (!perf_cpu_map__has_any_cpu(evsel->core.cpus)) {  in tool_pmu__read_event()
352 			*result = perf_cpu_map__nr(evsel->core.cpus);  in tool_pmu__read_event()
355 			 * "Any CPU" event that can be scheduled on any CPU in  in tool_pmu__read_event()
359 			if (!perf_cpu_map__is_empty(evsel->core.pmu_cpus))  in tool_pmu__read_event()
360 				*result = perf_cpu_map__nr(evsel->core.pmu_cpus);  in tool_pmu__read_event()
372 		if (!evsel || perf_cpu_map__is_empty(evsel->core.cpus)) {  in tool_pmu__read_event()
373 			/* No evsel to be specific to. */  in tool_pmu__read_event()
375 		} else if (!perf_cpu_map__has_any_cpu(evsel->core.cpus)) {  in tool_pmu__read_event()
378 				perf_cpu_map__intersect(online, evsel->core.cpus);  in tool_pmu__read_event()
384 			 * "Any CPU" event that can be scheduled on any CPU in  in tool_pmu__read_event()
389 			if (!perf_cpu_map__is_empty(evsel->core.pmu_cpus)) {  in tool_pmu__read_event()
391 					perf_cpu_map__intersect(online, evsel->core.pmu_cpus);  in tool_pmu__read_event()
404 		*result = topology->die_cpus_lists;  in tool_pmu__read_event()
409 		*result = topology->package_cpus_lists;  in tool_pmu__read_event()
438 	int fd, err = 0;  in evsel__tool_pmu_read()  local
443 	count = perf_counts(evsel->counts, cpu_map_idx, thread);  in evsel__tool_pmu_read()
455 		if (evsel->prev_raw_counts)  in evsel__tool_pmu_read()
456 			old_count = perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread);  in evsel__tool_pmu_read()
460 				count->lost++;  in evsel__tool_pmu_read()
465 			count->val = old_count->val + val;  in evsel__tool_pmu_read()
466 			count->run = old_count->run + 1;  in evsel__tool_pmu_read()
467 			count->ena = old_count->ena + 1;  in evsel__tool_pmu_read()
469 			count->val = val;  in evsel__tool_pmu_read()
470 			count->run++;  in evsel__tool_pmu_read()
471 			count->ena++;  in evsel__tool_pmu_read()
480 		start_time = &evsel->start_time;  in evsel__tool_pmu_read()
490 		start_time = xyarray__entry(evsel->start_times, cpu_map_idx, thread);  in evsel__tool_pmu_read()
491 		fd = FD(evsel, cpu_map_idx, thread);  in evsel__tool_pmu_read()
492 		lseek(fd, SEEK_SET, 0);  in evsel__tool_pmu_read()
493 		if (evsel->pid_stat) {  in evsel__tool_pmu_read()
496 				err = read_pid_stat_field(fd, system ? 15 : 14, &cur_time);  in evsel__tool_pmu_read()
502 				struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus,  in evsel__tool_pmu_read()
505 				err = read_stat_field(fd, cpu, system ? 3 : 1, &cur_time);  in evsel__tool_pmu_read()
516 		err = -EINVAL;  in evsel__tool_pmu_read()
521 	delta_start = cur_time - *start_time;  in evsel__tool_pmu_read()
527 	count->val    = delta_start;  in evsel__tool_pmu_read()
528 	count->lost   = 0;  in evsel__tool_pmu_read()
531 	 * exact values don't matter as long as they are non-zero to avoid  in evsel__tool_pmu_read()
534 	count->ena++;  in evsel__tool_pmu_read()
535 	count->run++;  in evsel__tool_pmu_read()
550 	tool->events_table = find_core_events_table("common", "common");  in tool_pmu__new()