1 // SPDX-License-Identifier: GPL-2.0 2 #include <stdarg.h> 3 #include <stdio.h> 4 #include <linux/perf_event.h> 5 #include <perf/cpumap.h> 6 #include <perf/threadmap.h> 7 #include <perf/evsel.h> 8 #include <internal/tests.h> 9 10 static int libperf_print(enum libperf_print_level level, 11 const char *fmt, va_list ap) 12 { 13 return vfprintf(stderr, fmt, ap); 14 } 15 16 static int test_stat_cpu(void) 17 { 18 struct perf_cpu_map *cpus; 19 struct perf_evsel *evsel; 20 struct perf_event_attr attr = { 21 .type = PERF_TYPE_SOFTWARE, 22 .config = PERF_COUNT_SW_CPU_CLOCK, 23 }; 24 int err, cpu, tmp; 25 26 cpus = perf_cpu_map__new(NULL); 27 __T("failed to create cpus", cpus); 28 29 evsel = perf_evsel__new(&attr); 30 __T("failed to create evsel", evsel); 31 32 err = perf_evsel__open(evsel, cpus, NULL); 33 __T("failed to open evsel", err == 0); 34 35 perf_cpu_map__for_each_cpu(cpu, tmp, cpus) { 36 struct perf_counts_values counts = { .val = 0 }; 37 38 perf_evsel__read(evsel, cpu, 0, &counts); 39 __T("failed to read value for evsel", counts.val != 0); 40 } 41 42 perf_evsel__close(evsel); 43 perf_evsel__delete(evsel); 44 45 perf_cpu_map__put(cpus); 46 return 0; 47 } 48 49 static int test_stat_thread(void) 50 { 51 struct perf_counts_values counts = { .val = 0 }; 52 struct perf_thread_map *threads; 53 struct perf_evsel *evsel; 54 struct perf_event_attr attr = { 55 .type = PERF_TYPE_SOFTWARE, 56 .config = PERF_COUNT_SW_TASK_CLOCK, 57 }; 58 int err; 59 60 threads = perf_thread_map__new_dummy(); 61 __T("failed to create threads", threads); 62 63 perf_thread_map__set_pid(threads, 0, 0); 64 65 evsel = perf_evsel__new(&attr); 66 __T("failed to create evsel", evsel); 67 68 err = perf_evsel__open(evsel, NULL, threads); 69 __T("failed to open evsel", err == 0); 70 71 perf_evsel__read(evsel, 0, 0, &counts); 72 __T("failed to read value for evsel", counts.val != 0); 73 74 perf_evsel__close(evsel); 75 perf_evsel__delete(evsel); 76 77 perf_thread_map__put(threads); 78 return 0; 79 } 80 81 static int test_stat_thread_enable(void) 82 { 83 struct perf_counts_values counts = { .val = 0 }; 84 struct perf_thread_map *threads; 85 struct perf_evsel *evsel; 86 struct perf_event_attr attr = { 87 .type = PERF_TYPE_SOFTWARE, 88 .config = PERF_COUNT_SW_TASK_CLOCK, 89 .disabled = 1, 90 }; 91 int err; 92 93 threads = perf_thread_map__new_dummy(); 94 __T("failed to create threads", threads); 95 96 perf_thread_map__set_pid(threads, 0, 0); 97 98 evsel = perf_evsel__new(&attr); 99 __T("failed to create evsel", evsel); 100 101 err = perf_evsel__open(evsel, NULL, threads); 102 __T("failed to open evsel", err == 0); 103 104 perf_evsel__read(evsel, 0, 0, &counts); 105 __T("failed to read value for evsel", counts.val == 0); 106 107 err = perf_evsel__enable(evsel); 108 __T("failed to enable evsel", err == 0); 109 110 perf_evsel__read(evsel, 0, 0, &counts); 111 __T("failed to read value for evsel", counts.val != 0); 112 113 err = perf_evsel__disable(evsel); 114 __T("failed to enable evsel", err == 0); 115 116 perf_evsel__close(evsel); 117 perf_evsel__delete(evsel); 118 119 perf_thread_map__put(threads); 120 return 0; 121 } 122 123 int main(int argc, char **argv) 124 { 125 __T_START; 126 127 libperf_init(libperf_print); 128 129 test_stat_cpu(); 130 test_stat_thread(); 131 test_stat_thread_enable(); 132 133 __T_END; 134 return 0; 135 } 136