1 // SPDX-License-Identifier: GPL-2.0 1
2 #include <stdbool.h>
3 #include <inttypes.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <linux/bitops.h>
7 #include <linux/kernel.h>
8 #include <linux/types.h>
9
10 #include "map_symbol.h"
11 #include "branch.h"
12 #include "event.h"
13 #include "evsel.h"
14 #include "debug.h"
15 #include "util/synthetic-events.h"
16 #include "util/util.h"
17
18 #include "tests.h"
19
20 #define COMP(m) do {
21 if (s1->m != s2->m) {
22 pr_debug("Samples differ at '"
23 return false;
24 }
25 } while (0)
26
27 #define MCOMP(m) do {
28 if (memcmp(&s1->m, &s2->m, sizeof(s1->
29 pr_debug("Samples differ at '"
30 return false;
31 }
32 } while (0)
33
34 /*
35 * Hardcode the expected values for branch_ent
36 * These are based on the input value (213) sp
37 * in branch_stack variable.
38 */
39 #define BS_EXPECTED_BE 0xa000d00000000000
40 #define BS_EXPECTED_LE 0x1aa00000000
41 #define FLAG(s) s->branch_stack->entries[i].fl
42
43 static bool samples_same(const struct perf_sam
44 const struct perf_sam
45 u64 type, u64 read_fo
46 {
47 size_t i;
48
49 if (type & PERF_SAMPLE_IDENTIFIER)
50 COMP(id);
51
52 if (type & PERF_SAMPLE_IP)
53 COMP(ip);
54
55 if (type & PERF_SAMPLE_TID) {
56 COMP(pid);
57 COMP(tid);
58 }
59
60 if (type & PERF_SAMPLE_TIME)
61 COMP(time);
62
63 if (type & PERF_SAMPLE_ADDR)
64 COMP(addr);
65
66 if (type & PERF_SAMPLE_ID)
67 COMP(id);
68
69 if (type & PERF_SAMPLE_STREAM_ID)
70 COMP(stream_id);
71
72 if (type & PERF_SAMPLE_CPU)
73 COMP(cpu);
74
75 if (type & PERF_SAMPLE_PERIOD)
76 COMP(period);
77
78 if (type & PERF_SAMPLE_READ) {
79 if (read_format & PERF_FORMAT_
80 COMP(read.group.nr);
81 else
82 COMP(read.one.value);
83 if (read_format & PERF_FORMAT_
84 COMP(read.time_enabled
85 if (read_format & PERF_FORMAT_
86 COMP(read.time_running
87 /* PERF_FORMAT_ID is forced fo
88 if (read_format & PERF_FORMAT_
89 for (i = 0; i < s1->re
90 /* FIXME: chec
91 if (read_forma
92 MCOMP(
93 }
94 } else {
95 COMP(read.one.id);
96 if (read_format & PERF
97 COMP(read.one.
98 }
99 }
100
101 if (type & PERF_SAMPLE_CALLCHAIN) {
102 COMP(callchain->nr);
103 for (i = 0; i < s1->callchain-
104 COMP(callchain->ips[i]
105 }
106
107 if (type & PERF_SAMPLE_RAW) {
108 COMP(raw_size);
109 if (memcmp(s1->raw_data, s2->r
110 pr_debug("Samples diff
111 return false;
112 }
113 }
114
115 if (type & PERF_SAMPLE_BRANCH_STACK) {
116 COMP(branch_stack->nr);
117 COMP(branch_stack->hw_idx);
118 for (i = 0; i < s1->branch_sta
119 if (needs_swap)
120 return ((host_
121 (FLAG(
122 (FLAG(
123 else
124 MCOMP(branch_s
125 }
126 }
127
128 if (type & PERF_SAMPLE_REGS_USER) {
129 size_t sz = hweight_long(s1->u
130
131 COMP(user_regs.mask);
132 COMP(user_regs.abi);
133 if (s1->user_regs.abi &&
134 (!s1->user_regs.regs || !s
135 memcmp(s1->user_regs.regs
136 pr_debug("Samples diff
137 return false;
138 }
139 }
140
141 if (type & PERF_SAMPLE_STACK_USER) {
142 COMP(user_stack.size);
143 if (memcmp(s1->user_stack.data
144 s1->user_stack.size
145 pr_debug("Samples diff
146 return false;
147 }
148 }
149
150 if (type & PERF_SAMPLE_WEIGHT)
151 COMP(weight);
152
153 if (type & PERF_SAMPLE_DATA_SRC)
154 COMP(data_src);
155
156 if (type & PERF_SAMPLE_TRANSACTION)
157 COMP(transaction);
158
159 if (type & PERF_SAMPLE_REGS_INTR) {
160 size_t sz = hweight_long(s1->i
161
162 COMP(intr_regs.mask);
163 COMP(intr_regs.abi);
164 if (s1->intr_regs.abi &&
165 (!s1->intr_regs.regs || !s
166 memcmp(s1->intr_regs.regs
167 pr_debug("Samples diff
168 return false;
169 }
170 }
171
172 if (type & PERF_SAMPLE_PHYS_ADDR)
173 COMP(phys_addr);
174
175 if (type & PERF_SAMPLE_CGROUP)
176 COMP(cgroup);
177
178 if (type & PERF_SAMPLE_DATA_PAGE_SIZE)
179 COMP(data_page_size);
180
181 if (type & PERF_SAMPLE_CODE_PAGE_SIZE)
182 COMP(code_page_size);
183
184 if (type & PERF_SAMPLE_AUX) {
185 COMP(aux_sample.size);
186 if (memcmp(s1->aux_sample.data
187 s1->aux_sample.size
188 pr_debug("Samples diff
189 return false;
190 }
191 }
192
193 return true;
194 }
195
196 static int do_test(u64 sample_type, u64 sample
197 {
198 struct evsel evsel = {
199 .needs_swap = false,
200 .core = {
201 . attr = {
202 .sample_type =
203 .read_format =
204 },
205 },
206 };
207 union perf_event *event;
208 union {
209 struct ip_callchain callchain;
210 u64 data[64];
211 } callchain = {
212 /* 3 ips */
213 .data = {3, 201, 202, 203},
214 };
215 union {
216 struct branch_stack branch_sta
217 u64 data[64];
218 } branch_stack = {
219 /* 1 branch_entry */
220 .data = {1, -1ULL, 211, 212, 2
221 };
222 u64 regs[64];
223 const u32 raw_data[] = {0x12345678, 0x
224 const u64 data[] = {0x2211443366558877
225 const u64 aux_data[] = {0xa55a, 0, 0xe
226 struct perf_sample sample = {
227 .ip = 101,
228 .pid = 102,
229 .tid = 103,
230 .time = 104,
231 .addr = 105,
232 .id = 106,
233 .stream_id = 107,
234 .period = 108,
235 .weight = 109,
236 .cpu = 110,
237 .raw_size = sizeof(raw_d
238 .data_src = 111,
239 .transaction = 112,
240 .raw_data = (void *)raw_
241 .callchain = &callchain.c
242 .no_hw_idx = false,
243 .branch_stack = &branch_stac
244 .user_regs = {
245 .abi = PERF_SAMPLE_
246 .mask = sample_regs,
247 .regs = regs,
248 },
249 .user_stack = {
250 .size = sizeof(data)
251 .data = (void *)data
252 },
253 .read = {
254 .time_enabled = 0x030a
255 .time_running = 0x011b
256 },
257 .intr_regs = {
258 .abi = PERF_SAMPLE_
259 .mask = sample_regs,
260 .regs = regs,
261 },
262 .phys_addr = 113,
263 .cgroup = 114,
264 .data_page_size = 115,
265 .code_page_size = 116,
266 .aux_sample = {
267 .size = sizeof(aux_d
268 .data = (void *)aux_
269 },
270 };
271 struct sample_read_value values[] = {{
272 struct perf_sample sample_out, sample_
273 size_t i, sz, bufsz;
274 int err, ret = -1;
275
276 if (sample_type & PERF_SAMPLE_REGS_USE
277 evsel.core.attr.sample_regs_us
278
279 if (sample_type & PERF_SAMPLE_REGS_INT
280 evsel.core.attr.sample_regs_in
281
282 if (sample_type & PERF_SAMPLE_BRANCH_S
283 evsel.core.attr.branch_sample_
284
285 for (i = 0; i < sizeof(regs); i++)
286 *(i + (u8 *)regs) = i & 0xfe;
287
288 if (read_format & PERF_FORMAT_GROUP) {
289 sample.read.group.nr = 4;
290 sample.read.group.values = val
291 } else {
292 sample.read.one.value = 0x0878
293 sample.read.one.id = 99;
294 sample.read.one.lost = 1;
295 }
296
297 sz = perf_event__sample_event_size(&sa
298 bufsz = sz + 4096; /* Add a bit for ov
299 event = malloc(bufsz);
300 if (!event) {
301 pr_debug("malloc failed\n");
302 return -1;
303 }
304
305 memset(event, 0xff, bufsz);
306 event->header.type = PERF_RECORD_SAMPL
307 event->header.misc = 0;
308 event->header.size = sz;
309
310 err = perf_event__synthesize_sample(ev
311 &s
312 if (err) {
313 pr_debug("%s failed for sample
314 "perf_event__synthesi
315 goto out_free;
316 }
317
318 /* The data does not contain 0xff so w
319 for (i = bufsz; i > 0; i--) {
320 if (*(i - 1 + (u8 *)event) !=
321 break;
322 }
323 if (i != sz) {
324 pr_debug("Event size mismatch:
325 i, sz);
326 goto out_free;
327 }
328
329 evsel.sample_size = __evsel__sample_si
330
331 err = evsel__parse_sample(&evsel, even
332 if (err) {
333 pr_debug("%s failed for sample
334 "evsel__parse_sample"
335 goto out_free;
336 }
337
338 if (!samples_same(&sample, &sample_out
339 pr_debug("parsing failed for s
340 sample_type);
341 goto out_free;
342 }
343
344 if (sample_type == PERF_SAMPLE_BRANCH_
345 evsel.needs_swap = true;
346 evsel.sample_size = __evsel__s
347 err = evsel__parse_sample(&evs
348 if (err) {
349 pr_debug("%s failed fo
350 "evsel__parse
351 goto out_free;
352 }
353
354 if (!samples_same(&sample, &sa
355 pr_debug("parsing fail
356 sample_type);
357 goto out_free;
358 }
359 }
360
361 ret = 0;
362 out_free:
363 free(event);
364 if (ret && read_format)
365 pr_debug("read_format %#"PRIx6
366 return ret;
367 }
368
369 /**
370 * test__sample_parsing - test sample parsing.
371 *
372 * This function implements a test that synthe
373 * and then checks that the parsed sample matc
374 * checks sample format bits separately and to
375 * returned, otherwise %-1 is returned.
376 */
377 static int test__sample_parsing(struct test_su
378 {
379 const u64 rf[] = {4, 5, 6, 7, 12, 13,
380 u64 sample_type;
381 u64 sample_regs;
382 size_t i;
383 int err;
384
385 /*
386 * Fail the test if it has not been up
387 * were added. Please actually update
388 * the condition below.
389 */
390 if (PERF_SAMPLE_MAX > PERF_SAMPLE_WEIG
391 pr_debug("sample format has ch
392 return -1;
393 }
394
395 /* Test each sample format bit separat
396 for (sample_type = 1; sample_type != P
397 sample_type <<= 1) {
398 /* Test read_format variations
399 if (sample_type == PERF_SAMPLE
400 for (i = 0; i < ARRAY_
401 err = do_test(
402 if (err)
403 return
404 }
405 continue;
406 }
407 sample_regs = 0;
408
409 if (sample_type == PERF_SAMPLE
410 sample_regs = 0x3fff;
411
412 if (sample_type == PERF_SAMPLE
413 sample_regs = 0xff0fff
414
415 err = do_test(sample_type, sam
416 if (err)
417 return err;
418 }
419
420 /*
421 * Test all sample format bits togethe
422 * Note: PERF_SAMPLE_WEIGHT and PERF_S
423 * be set simultaneously.
424 */
425 sample_type = (PERF_SAMPLE_MAX - 1) &
426 sample_regs = 0x3fff; /* shared yb int
427 for (i = 0; i < ARRAY_SIZE(rf); i++) {
428 err = do_test(sample_type, sam
429 if (err)
430 return err;
431 }
432
433 return 0;
434 }
435
436 DEFINE_SUITE("Sample parsing", sample_parsing)
437
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