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; !! 42 struct perf_mmap *md;
49 43
50 attr.sample_freq = 500; 44 attr.sample_freq = 500;
51 45
52 evlist = evlist__new(); !! 46 evlist = perf_evlist__new();
53 if (evlist == NULL) { 47 if (evlist == NULL) {
54 pr_debug("evlist__new\n"); !! 48 pr_debug("perf_evlist__new\n");
55 return -1; 49 return -1;
56 } 50 }
57 51
58 evsel = evsel__new(&attr); !! 52 evsel = perf_evsel__new(&attr);
59 if (evsel == NULL) { 53 if (evsel == NULL) {
60 pr_debug("evsel__new\n"); !! 54 pr_debug("perf_evsel__new\n");
61 goto out_delete_evlist; 55 goto out_delete_evlist;
62 } 56 }
63 evlist__add(evlist, evsel); !! 57 perf_evlist__add(evlist, evsel);
64 58
65 cpus = perf_cpu_map__new_any_cpu(); !! 59 cpus = cpu_map__dummy_new();
66 threads = thread_map__new_by_tid(getpi 60 threads = thread_map__new_by_tid(getpid());
67 if (!cpus || !threads) { 61 if (!cpus || !threads) {
68 err = -ENOMEM; 62 err = -ENOMEM;
69 pr_debug("Not enough memory to 63 pr_debug("Not enough memory to create thread/cpu maps\n");
70 goto out_delete_evlist; !! 64 goto out_free_maps;
71 } 65 }
72 66
73 perf_evlist__set_maps(&evlist->core, c !! 67 perf_evlist__set_maps(evlist, cpus, threads);
>> 68
>> 69 cpus = NULL;
>> 70 threads = NULL;
74 71
75 if (evlist__open(evlist)) { !! 72 if (perf_evlist__open(evlist)) {
76 const char *knob = "/proc/sys/ 73 const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate";
77 74
78 err = -errno; 75 err = -errno;
79 pr_debug("Couldn't open evlist 76 pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n",
80 str_error_r(errno, sb 77 str_error_r(errno, sbuf, sizeof(sbuf)),
81 knob, (u64)attr.sampl 78 knob, (u64)attr.sample_freq);
82 goto out_delete_evlist; 79 goto out_delete_evlist;
83 } 80 }
84 81
85 err = evlist__mmap(evlist, 128); !! 82 err = perf_evlist__mmap(evlist, 128);
86 if (err < 0) { 83 if (err < 0) {
87 pr_debug("failed to mmap event 84 pr_debug("failed to mmap event: %d (%s)\n", errno,
88 str_error_r(errno, sb 85 str_error_r(errno, sbuf, sizeof(sbuf)));
89 goto out_delete_evlist; 86 goto out_delete_evlist;
90 } 87 }
91 88
92 evlist__enable(evlist); !! 89 perf_evlist__enable(evlist);
93 90
94 /* collect samples */ 91 /* collect samples */
95 for (i = 0; i < NR_LOOPS; i++) 92 for (i = 0; i < NR_LOOPS; i++)
96 tmp++; 93 tmp++;
97 94
98 evlist__disable(evlist); !! 95 perf_evlist__disable(evlist);
99 96
100 md = &evlist->mmap[0]; 97 md = &evlist->mmap[0];
101 if (perf_mmap__read_init(&md->core) < !! 98 if (perf_mmap__read_init(md) < 0)
102 goto out_init; 99 goto out_init;
103 100
104 while ((event = perf_mmap__read_event( !! 101 while ((event = perf_mmap__read_event(md)) != NULL) {
105 struct perf_sample sample; 102 struct perf_sample sample;
106 103
107 if (event->header.type != PERF 104 if (event->header.type != PERF_RECORD_SAMPLE)
108 goto next_event; 105 goto next_event;
109 106
110 err = evlist__parse_sample(evl !! 107 err = perf_evlist__parse_sample(evlist, event, &sample);
111 if (err < 0) { 108 if (err < 0) {
112 pr_debug("Error during 109 pr_debug("Error during parse sample\n");
113 goto out_delete_evlist 110 goto out_delete_evlist;
114 } 111 }
115 112
116 total_periods += sample.period 113 total_periods += sample.period;
117 nr_samples++; 114 nr_samples++;
118 next_event: 115 next_event:
119 perf_mmap__consume(&md->core); !! 116 perf_mmap__consume(md);
120 } 117 }
121 perf_mmap__read_done(&md->core); !! 118 perf_mmap__read_done(md);
122 119
123 out_init: 120 out_init:
124 if ((u64) nr_samples == total_periods) 121 if ((u64) nr_samples == total_periods) {
125 pr_debug("All (%d) samples hav 122 pr_debug("All (%d) samples have period value of 1!\n",
126 nr_samples); 123 nr_samples);
127 err = -1; 124 err = -1;
128 } 125 }
129 126
>> 127 out_free_maps:
>> 128 cpu_map__put(cpus);
>> 129 thread_map__put(threads);
130 out_delete_evlist: 130 out_delete_evlist:
131 perf_cpu_map__put(cpus); !! 131 perf_evlist__delete(evlist);
132 perf_thread_map__put(threads); <<
133 evlist__delete(evlist); <<
134 return err; 132 return err;
135 } 133 }
136 134
137 static int test__sw_clock_freq(struct test_sui !! 135 int test__sw_clock_freq(struct test *test __maybe_unused, int subtest __maybe_unused)
138 { 136 {
139 int ret; 137 int ret;
140 138
141 ret = __test__sw_clock_freq(PERF_COUNT 139 ret = __test__sw_clock_freq(PERF_COUNT_SW_CPU_CLOCK);
142 if (!ret) 140 if (!ret)
143 ret = __test__sw_clock_freq(PE 141 ret = __test__sw_clock_freq(PERF_COUNT_SW_TASK_CLOCK);
144 142
145 return ret; 143 return ret;
146 } 144 }
147 <<
148 DEFINE_SUITE("Software clock events period val <<
149 145
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.