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