1 // SPDX-License-Identifier: GPL-2.0-only
13 #include "event.h"
23 void event_init_opts(struct event *e, u64 config, int type, char *name)  in event_init_opts()  argument
27 	e->name = name;  in event_init_opts()
29 	e->attr.type = type;  in event_init_opts()
30 	e->attr.config = config;  in event_init_opts()
31 	e->attr.size = sizeof(e->attr);  in event_init_opts()
33 	e->attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | \  in event_init_opts()
37 void event_init_named(struct event *e, u64 config, char *name)  in event_init_named()  argument
39 	event_init_opts(e, config, PERF_TYPE_RAW, name);  in event_init_named()
42 void event_init(struct event *e, u64 config)  in event_init()
44 	event_init_opts(e, config, PERF_TYPE_RAW, "event");  in event_init()
48 #define PERF_NO_PID		-1
49 #define PERF_NO_CPU		-1
50 #define PERF_NO_GROUP		-1
52 int event_open_with_options(struct event *e, pid_t pid, int cpu, int group_fd)  in event_open_with_options()
54 	e->fd = perf_event_open(&e->attr, pid, cpu, group_fd, 0);  in event_open_with_options()
55 	if (e->fd == -1) {  in event_open_with_options()
57 		return -1;  in event_open_with_options()
63 int event_open_with_group(struct event *e, int group_fd)  in event_open_with_group()
68 int event_open_with_pid(struct event *e, pid_t pid)  in event_open_with_pid()
73 int event_open_with_cpu(struct event *e, int cpu)  in event_open_with_cpu()
78 int event_open(struct event *e)  in event_open()
83 void event_close(struct event *e)  in event_close()
85 	close(e->fd);  in event_close()
88 int event_enable(struct event *e)  in event_enable()
90 	return ioctl(e->fd, PERF_EVENT_IOC_ENABLE);  in event_enable()
93 int event_disable(struct event *e)  in event_disable()
95 	return ioctl(e->fd, PERF_EVENT_IOC_DISABLE);  in event_disable()
98 int event_reset(struct event *e)  in event_reset()
100 	return ioctl(e->fd, PERF_EVENT_IOC_RESET);  in event_reset()
103 int event_read(struct event *e)  in event_read()
107 	rc = read(e->fd, &e->result, sizeof(e->result));  in event_read()
108 	if (rc != sizeof(e->result)) {  in event_read()
109 		fprintf(stderr, "read error on event %p!\n", e);  in event_read()
110 		return -1;  in event_read()
116 void event_report_justified(struct event *e, int name_width, int result_width)  in event_report_justified()
118 	printf("%*s: result %*llu ", name_width, e->name, result_width,  in event_report_justified()
119 	       e->result.value);  in event_report_justified()
121 	if (e->result.running == e->result.enabled)  in event_report_justified()
122 		printf("running/enabled %llu\n", e->result.running);  in event_report_justified()
124 		printf("running %llu enabled %llu\n", e->result.running,  in event_report_justified()
125 			e->result.enabled);  in event_report_justified()
128 void event_report(struct event *e)  in event_report()