1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #include <errno.h> 2 #include <errno.h>
3 #include <inttypes.h> 3 #include <inttypes.h>
4 #include <unistd.h> 4 #include <unistd.h>
5 #include <stdlib.h> 5 #include <stdlib.h>
6 #include <signal.h> 6 #include <signal.h>
7 #include <sys/mman.h> 7 #include <sys/mman.h>
8 #include <linux/string.h> <<
9 8
10 #include "tests.h" 9 #include "tests.h"
11 #include "util/debug.h" <<
12 #include "util/evsel.h" 10 #include "util/evsel.h"
13 #include "util/evlist.h" 11 #include "util/evlist.h"
14 #include "util/cpumap.h" 12 #include "util/cpumap.h"
15 #include "util/mmap.h" <<
16 #include "util/sample.h" <<
17 #include "util/thread_map.h" 13 #include "util/thread_map.h"
18 #include <perf/evlist.h> <<
19 #include <perf/mmap.h> <<
20 14
21 #define NR_LOOPS 10000000 15 #define NR_LOOPS 10000000
22 16
23 /* 17 /*
24 * This test will open software clock events ( 18 * This test will open software clock events (cpu-clock, task-clock)
25 * then check their frequency -> period conver 19 * then check their frequency -> period conversion has no artifact of
26 * setting period to 1 forcefully. 20 * setting period to 1 forcefully.
27 */ 21 */
28 static int __test__sw_clock_freq(enum perf_sw_ 22 static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
29 { 23 {
30 int i, err = -1; 24 int i, err = -1;
31 volatile int tmp = 0; 25 volatile int tmp = 0;
32 u64 total_periods = 0; 26 u64 total_periods = 0;
33 int nr_samples = 0; 27 int nr_samples = 0;
34 char sbuf[STRERR_BUFSIZE]; 28 char sbuf[STRERR_BUFSIZE];
35 union perf_event *event; 29 union perf_event *event;
36 struct evsel *evsel; !! 30 struct perf_evsel *evsel;
37 struct evlist *evlist; !! 31 struct perf_evlist *evlist;
38 struct perf_event_attr attr = { 32 struct perf_event_attr attr = {
39 .type = PERF_TYPE_SOFTWARE, 33 .type = PERF_TYPE_SOFTWARE,
40 .config = clock_id, 34 .config = clock_id,
41 .sample_type = PERF_SAMPLE_PER 35 .sample_type = PERF_SAMPLE_PERIOD,
42 .exclude_kernel = 1, 36 .exclude_kernel = 1,
43 .disabled = 1, 37 .disabled = 1,
44 .freq = 1, 38 .freq = 1,
45 }; 39 };
46 struct perf_cpu_map *cpus = NULL; !! 40 struct cpu_map *cpus;
47 struct perf_thread_map *threads = NULL !! 41 struct thread_map *threads;
48 struct mmap *md; <<
49 42
50 attr.sample_freq = 500; 43 attr.sample_freq = 500;
51 44
52 evlist = evlist__new(); !! 45 evlist = perf_evlist__new();
53 if (evlist == NULL) { 46 if (evlist == NULL) {
54 pr_debug("evlist__new\n"); !! 47 pr_debug("perf_evlist__new\n");
55 return -1; 48 return -1;
56 } 49 }
57 50
58 evsel = evsel__new(&attr); !! 51 evsel = perf_evsel__new(&attr);
59 if (evsel == NULL) { 52 if (evsel == NULL) {
60 pr_debug("evsel__new\n"); !! 53 pr_debug("perf_evsel__new\n");
61 goto out_delete_evlist; 54 goto out_delete_evlist;
62 } 55 }
63 evlist__add(evlist, evsel); !! 56 perf_evlist__add(evlist, evsel);
64 57
65 cpus = perf_cpu_map__new_any_cpu(); !! 58 cpus = cpu_map__dummy_new();
66 threads = thread_map__new_by_tid(getpi 59 threads = thread_map__new_by_tid(getpid());
67 if (!cpus || !threads) { 60 if (!cpus || !threads) {
68 err = -ENOMEM; 61 err = -ENOMEM;
69 pr_debug("Not enough memory to 62 pr_debug("Not enough memory to create thread/cpu maps\n");
70 goto out_delete_evlist; !! 63 goto out_free_maps;
71 } 64 }
72 65
73 perf_evlist__set_maps(&evlist->core, c !! 66 perf_evlist__set_maps(evlist, cpus, threads);
>> 67
>> 68 cpus = NULL;
>> 69 threads = NULL;
74 70
75 if (evlist__open(evlist)) { !! 71 if (perf_evlist__open(evlist)) {
76 const char *knob = "/proc/sys/ 72 const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate";
77 73
78 err = -errno; 74 err = -errno;
79 pr_debug("Couldn't open evlist 75 pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n",
80 str_error_r(errno, sb 76 str_error_r(errno, sbuf, sizeof(sbuf)),
81 knob, (u64)attr.sampl 77 knob, (u64)attr.sample_freq);
82 goto out_delete_evlist; 78 goto out_delete_evlist;
83 } 79 }
84 80
85 err = evlist__mmap(evlist, 128); !! 81 err = perf_evlist__mmap(evlist, 128, true);
86 if (err < 0) { 82 if (err < 0) {
87 pr_debug("failed to mmap event 83 pr_debug("failed to mmap event: %d (%s)\n", errno,
88 str_error_r(errno, sb 84 str_error_r(errno, sbuf, sizeof(sbuf)));
89 goto out_delete_evlist; 85 goto out_delete_evlist;
90 } 86 }
91 87
92 evlist__enable(evlist); !! 88 perf_evlist__enable(evlist);
93 89
94 /* collect samples */ 90 /* collect samples */
95 for (i = 0; i < NR_LOOPS; i++) 91 for (i = 0; i < NR_LOOPS; i++)
96 tmp++; 92 tmp++;
97 93
98 evlist__disable(evlist); !! 94 perf_evlist__disable(evlist);
99 95
100 md = &evlist->mmap[0]; !! 96 while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) {
101 if (perf_mmap__read_init(&md->core) < <<
102 goto out_init; <<
103 <<
104 while ((event = perf_mmap__read_event( <<
105 struct perf_sample sample; 97 struct perf_sample sample;
106 98
107 if (event->header.type != PERF 99 if (event->header.type != PERF_RECORD_SAMPLE)
108 goto next_event; 100 goto next_event;
109 101
110 err = evlist__parse_sample(evl !! 102 err = perf_evlist__parse_sample(evlist, event, &sample);
111 if (err < 0) { 103 if (err < 0) {
112 pr_debug("Error during 104 pr_debug("Error during parse sample\n");
113 goto out_delete_evlist 105 goto out_delete_evlist;
114 } 106 }
115 107
116 total_periods += sample.period 108 total_periods += sample.period;
117 nr_samples++; 109 nr_samples++;
118 next_event: 110 next_event:
119 perf_mmap__consume(&md->core); !! 111 perf_evlist__mmap_consume(evlist, 0);
120 } 112 }
121 perf_mmap__read_done(&md->core); <<
122 113
123 out_init: <<
124 if ((u64) nr_samples == total_periods) 114 if ((u64) nr_samples == total_periods) {
125 pr_debug("All (%d) samples hav 115 pr_debug("All (%d) samples have period value of 1!\n",
126 nr_samples); 116 nr_samples);
127 err = -1; 117 err = -1;
128 } 118 }
129 119
>> 120 out_free_maps:
>> 121 cpu_map__put(cpus);
>> 122 thread_map__put(threads);
130 out_delete_evlist: 123 out_delete_evlist:
131 perf_cpu_map__put(cpus); !! 124 perf_evlist__delete(evlist);
132 perf_thread_map__put(threads); <<
133 evlist__delete(evlist); <<
134 return err; 125 return err;
135 } 126 }
136 127
137 static int test__sw_clock_freq(struct test_sui !! 128 int test__sw_clock_freq(struct test *test __maybe_unused, int subtest __maybe_unused)
138 { 129 {
139 int ret; 130 int ret;
140 131
141 ret = __test__sw_clock_freq(PERF_COUNT 132 ret = __test__sw_clock_freq(PERF_COUNT_SW_CPU_CLOCK);
142 if (!ret) 133 if (!ret)
143 ret = __test__sw_clock_freq(PE 134 ret = __test__sw_clock_freq(PERF_COUNT_SW_TASK_CLOCK);
144 135
145 return ret; 136 return ret;
146 } 137 }
147 <<
148 DEFINE_SUITE("Software clock events period val <<
149 138
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