1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/compiler.h>
3 #include <linux/time64.h>
4 #include <inttypes.h>
5 #include <string.h>
6 #include "time-utils.h"
7 #include "evlist.h"
8 #include "session.h"
9 #include "debug.h"
10 #include "tests.h"
11 
12 static bool test__parse_nsec_time(const char *str, u64 expected)
13 {
14 	u64 ptime;
15 	int err;
16 
17 	pr_debug("\nparse_nsec_time(\"%s\")\n", str);
18 
19 	err = parse_nsec_time(str, &ptime);
20 	if (err) {
21 		pr_debug("error %d\n", err);
22 		return false;
23 	}
24 
25 	if (ptime != expected) {
26 		pr_debug("Failed. ptime %" PRIu64 " expected %" PRIu64 "\n",
27 			 ptime, expected);
28 		return false;
29 	}
30 
31 	pr_debug("%" PRIu64 "\n", ptime);
32 
33 	return true;
34 }
35 
36 static bool test__perf_time__parse_str(const char *ostr, u64 start, u64 end)
37 {
38 	struct perf_time_interval ptime;
39 	int err;
40 
41 	pr_debug("\nperf_time__parse_str(\"%s\")\n", ostr);
42 
43 	err = perf_time__parse_str(&ptime, ostr);
44 	if (err) {
45 		pr_debug("Error %d\n", err);
46 		return false;
47 	}
48 
49 	if (ptime.start != start || ptime.end != end) {
50 		pr_debug("Failed. Expected %" PRIu64 " to %" PRIu64 "\n",
51 			 start, end);
52 		return false;
53 	}
54 
55 	return true;
56 }
57 
58 #define TEST_MAX 64
59 
60 struct test_data {
61 	const char *str;
62 	u64 first;
63 	u64 last;
64 	struct perf_time_interval ptime[TEST_MAX];
65 	int num;
66 	u64 skip[TEST_MAX];
67 	u64 noskip[TEST_MAX];
68 };
69 
70 static bool test__perf_time__parse_for_ranges(struct test_data *d)
71 {
72 	struct evlist evlist = {
73 		.first_sample_time = d->first,
74 		.last_sample_time = d->last,
75 	};
76 	struct perf_session session = { .evlist = &evlist };
77 	struct perf_time_interval *ptime = NULL;
78 	int range_size, range_num;
79 	bool pass = false;
80 	int i, err;
81 
82 	pr_debug("\nperf_time__parse_for_ranges(\"%s\")\n", d->str);
83 
84 	if (strchr(d->str, '%'))
85 		pr_debug("first_sample_time %" PRIu64 " last_sample_time %" PRIu64 "\n",
86 			 d->first, d->last);
87 
88 	err = perf_time__parse_for_ranges(d->str, &session, &ptime, &range_size,
89 					  &range_num);
90 	if (err) {
91 		pr_debug("error %d\n", err);
92 		goto out;
93 	}
94 
95 	if (range_size < d->num || range_num != d->num) {
96 		pr_debug("bad size: range_size %d range_num %d expected num %d\n",
97 			 range_size, range_num, d->num);
98 		goto out;
99 	}
100 
101 	for (i = 0; i < d->num; i++) {
102 		if (ptime[i].start != d->ptime[i].start ||
103 		    ptime[i].end != d->ptime[i].end) {
104 			pr_debug("bad range %d expected %" PRIu64 " to %" PRIu64 "\n",
105 				 i, d->ptime[i].start, d->ptime[i].end);
106 			goto out;
107 		}
108 	}
109 
110 	if (perf_time__ranges_skip_sample(ptime, d->num, 0)) {
111 		pr_debug("failed to keep 0\n");
112 		goto out;
113 	}
114 
115 	for (i = 0; i < TEST_MAX; i++) {
116 		if (d->skip[i] &&
117 		    !perf_time__ranges_skip_sample(ptime, d->num, d->skip[i])) {
118 			pr_debug("failed to skip %" PRIu64 "\n", d->skip[i]);
119 			goto out;
120 		}
121 		if (d->noskip[i] &&
122 		    perf_time__ranges_skip_sample(ptime, d->num, d->noskip[i])) {
123 			pr_debug("failed to keep %" PRIu64 "\n", d->noskip[i]);
124 			goto out;
125 		}
126 	}
127 
128 	pass = true;
129 out:
130 	free(ptime);
131 	return pass;
132 }
133 
134 static int test__time_utils(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
135 {
136 	bool pass = true;
137 
138 	pass &= test__parse_nsec_time("0", 0);
139 	pass &= test__parse_nsec_time("1", 1000000000ULL);
140 	pass &= test__parse_nsec_time("0.000000001", 1);
141 	pass &= test__parse_nsec_time("1.000000001", 1000000001ULL);
142 	pass &= test__parse_nsec_time("123456.123456", 123456123456000ULL);
143 	pass &= test__parse_nsec_time("1234567.123456789", 1234567123456789ULL);
144 	pass &= test__parse_nsec_time("18446744073.709551615",
145 				      0xFFFFFFFFFFFFFFFFULL);
146 
147 	pass &= test__perf_time__parse_str("1234567.123456789,1234567.123456789",
148 					   1234567123456789ULL, 1234567123456789ULL);
149 	pass &= test__perf_time__parse_str("1234567.123456789,1234567.123456790",
150 					   1234567123456789ULL, 1234567123456790ULL);
151 	pass &= test__perf_time__parse_str("1234567.123456789,",
152 					   1234567123456789ULL, 0);
153 	pass &= test__perf_time__parse_str(",1234567.123456789",
154 					   0, 1234567123456789ULL);
155 	pass &= test__perf_time__parse_str("0,1234567.123456789",
156 					   0, 1234567123456789ULL);
157 
158 	{
159 		u64 b = 1234567123456789ULL;
160 		struct test_data d = {
161 			.str   = "1234567.123456789,1234567.123456790",
162 			.ptime = { {b, b + 1}, },
163 			.num = 1,
164 			.skip = { b - 1, b + 2, },
165 			.noskip = { b, b + 1, },
166 		};
167 
168 		pass &= test__perf_time__parse_for_ranges(&d);
169 	}
170 
171 	{
172 		u64 b = 1234567123456789ULL;
173 		u64 c = 7654321987654321ULL;
174 		u64 e = 8000000000000000ULL;
175 		struct test_data d = {
176 			.str   = "1234567.123456789,1234567.123456790 "
177 				 "7654321.987654321,7654321.987654444 "
178 				 "8000000,8000000.000000005",
179 			.ptime = { {b, b + 1}, {c, c + 123}, {e, e + 5}, },
180 			.num = 3,
181 			.skip = { b - 1, b + 2, c - 1, c + 124, e - 1, e + 6 },
182 			.noskip = { b, b + 1, c, c + 123, e, e + 5 },
183 		};
184 
185 		pass &= test__perf_time__parse_for_ranges(&d);
186 	}
187 
188 	{
189 		u64 b = 7654321ULL * NSEC_PER_SEC;
190 		struct test_data d = {
191 			.str    = "10%/1",
192 			.first  = b,
193 			.last   = b + 100,
194 			.ptime  = { {b, b + 9}, },
195 			.num    = 1,
196 			.skip   = { b - 1, b + 10, },
197 			.noskip = { b, b + 9, },
198 		};
199 
200 		pass &= test__perf_time__parse_for_ranges(&d);
201 	}
202 
203 	{
204 		u64 b = 7654321ULL * NSEC_PER_SEC;
205 		struct test_data d = {
206 			.str    = "10%/2",
207 			.first  = b,
208 			.last   = b + 100,
209 			.ptime  = { {b + 10, b + 19}, },
210 			.num    = 1,
211 			.skip   = { b + 9, b + 20, },
212 			.noskip = { b + 10, b + 19, },
213 		};
214 
215 		pass &= test__perf_time__parse_for_ranges(&d);
216 	}
217 
218 	{
219 		u64 b = 11223344ULL * NSEC_PER_SEC;
220 		struct test_data d = {
221 			.str    = "10%/1,10%/2",
222 			.first  = b,
223 			.last   = b + 100,
224 			.ptime  = { {b, b + 9}, {b + 10, b + 19}, },
225 			.num    = 2,
226 			.skip   = { b - 1, b + 20, },
227 			.noskip = { b, b + 8, b + 9, b + 10, b + 11, b + 12, b + 19, },
228 		};
229 
230 		pass &= test__perf_time__parse_for_ranges(&d);
231 	}
232 
233 	{
234 		u64 b = 11223344ULL * NSEC_PER_SEC;
235 		struct test_data d = {
236 			.str    = "10%/1,10%/3,10%/10",
237 			.first  = b,
238 			.last   = b + 100,
239 			.ptime  = { {b, b + 9}, {b + 20, b + 29}, { b + 90, b + 100}, },
240 			.num    = 3,
241 			.skip   = { b - 1, b + 10, b + 19, b + 30, b + 89, b + 101 },
242 			.noskip = { b, b + 9, b + 20, b + 29, b + 90, b + 100},
243 		};
244 
245 		pass &= test__perf_time__parse_for_ranges(&d);
246 	}
247 
248 	pr_debug("\n");
249 
250 	return pass ? 0 : TEST_FAIL;
251 }
252 
253 DEFINE_SUITE("time utils", time_utils);
254