1 // SPDX-License-Identifier: GPL-2.0 <<
2 #include <stdbool.h> 1 #include <stdbool.h>
3 #include <inttypes.h> 2 #include <inttypes.h>
4 #include <stdlib.h> <<
5 #include <string.h> <<
6 #include <linux/bitops.h> <<
7 #include <linux/kernel.h> 3 #include <linux/kernel.h>
8 #include <linux/types.h> 4 #include <linux/types.h>
9 5
10 #include "map_symbol.h" !! 6 #include "util.h"
11 #include "branch.h" <<
12 #include "event.h" 7 #include "event.h"
13 #include "evsel.h" 8 #include "evsel.h"
14 #include "debug.h" 9 #include "debug.h"
15 #include "util/synthetic-events.h" <<
16 #include "util/util.h" <<
17 10
18 #include "tests.h" 11 #include "tests.h"
19 12
20 #define COMP(m) do { 13 #define COMP(m) do { \
21 if (s1->m != s2->m) { 14 if (s1->m != s2->m) { \
22 pr_debug("Samples differ at '" 15 pr_debug("Samples differ at '"#m"'\n"); \
23 return false; 16 return false; \
24 } 17 } \
25 } while (0) 18 } while (0)
26 19
27 #define MCOMP(m) do { 20 #define MCOMP(m) do { \
28 if (memcmp(&s1->m, &s2->m, sizeof(s1-> 21 if (memcmp(&s1->m, &s2->m, sizeof(s1->m))) { \
29 pr_debug("Samples differ at '" 22 pr_debug("Samples differ at '"#m"'\n"); \
30 return false; 23 return false; \
31 } 24 } \
32 } while (0) 25 } while (0)
33 26
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 27 static bool samples_same(const struct perf_sample *s1,
44 const struct perf_sam 28 const struct perf_sample *s2,
45 u64 type, u64 read_fo !! 29 u64 type, u64 read_format)
46 { 30 {
47 size_t i; 31 size_t i;
48 32
49 if (type & PERF_SAMPLE_IDENTIFIER) 33 if (type & PERF_SAMPLE_IDENTIFIER)
50 COMP(id); 34 COMP(id);
51 35
52 if (type & PERF_SAMPLE_IP) 36 if (type & PERF_SAMPLE_IP)
53 COMP(ip); 37 COMP(ip);
54 38
55 if (type & PERF_SAMPLE_TID) { 39 if (type & PERF_SAMPLE_TID) {
56 COMP(pid); 40 COMP(pid);
57 COMP(tid); 41 COMP(tid);
58 } 42 }
59 43
60 if (type & PERF_SAMPLE_TIME) 44 if (type & PERF_SAMPLE_TIME)
61 COMP(time); 45 COMP(time);
62 46
63 if (type & PERF_SAMPLE_ADDR) 47 if (type & PERF_SAMPLE_ADDR)
64 COMP(addr); 48 COMP(addr);
65 49
66 if (type & PERF_SAMPLE_ID) 50 if (type & PERF_SAMPLE_ID)
67 COMP(id); 51 COMP(id);
68 52
69 if (type & PERF_SAMPLE_STREAM_ID) 53 if (type & PERF_SAMPLE_STREAM_ID)
70 COMP(stream_id); 54 COMP(stream_id);
71 55
72 if (type & PERF_SAMPLE_CPU) 56 if (type & PERF_SAMPLE_CPU)
73 COMP(cpu); 57 COMP(cpu);
74 58
75 if (type & PERF_SAMPLE_PERIOD) 59 if (type & PERF_SAMPLE_PERIOD)
76 COMP(period); 60 COMP(period);
77 61
78 if (type & PERF_SAMPLE_READ) { 62 if (type & PERF_SAMPLE_READ) {
79 if (read_format & PERF_FORMAT_ 63 if (read_format & PERF_FORMAT_GROUP)
80 COMP(read.group.nr); 64 COMP(read.group.nr);
81 else 65 else
82 COMP(read.one.value); 66 COMP(read.one.value);
83 if (read_format & PERF_FORMAT_ 67 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
84 COMP(read.time_enabled 68 COMP(read.time_enabled);
85 if (read_format & PERF_FORMAT_ 69 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
86 COMP(read.time_running 70 COMP(read.time_running);
87 /* PERF_FORMAT_ID is forced fo 71 /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
88 if (read_format & PERF_FORMAT_ 72 if (read_format & PERF_FORMAT_GROUP) {
89 for (i = 0; i < s1->re !! 73 for (i = 0; i < s1->read.group.nr; i++)
90 /* FIXME: chec !! 74 MCOMP(read.group.values[i]);
91 if (read_forma <<
92 MCOMP( <<
93 } <<
94 } else { 75 } else {
95 COMP(read.one.id); 76 COMP(read.one.id);
96 if (read_format & PERF <<
97 COMP(read.one. <<
98 } 77 }
99 } 78 }
100 79
101 if (type & PERF_SAMPLE_CALLCHAIN) { 80 if (type & PERF_SAMPLE_CALLCHAIN) {
102 COMP(callchain->nr); 81 COMP(callchain->nr);
103 for (i = 0; i < s1->callchain- 82 for (i = 0; i < s1->callchain->nr; i++)
104 COMP(callchain->ips[i] 83 COMP(callchain->ips[i]);
105 } 84 }
106 85
107 if (type & PERF_SAMPLE_RAW) { 86 if (type & PERF_SAMPLE_RAW) {
108 COMP(raw_size); 87 COMP(raw_size);
109 if (memcmp(s1->raw_data, s2->r 88 if (memcmp(s1->raw_data, s2->raw_data, s1->raw_size)) {
110 pr_debug("Samples diff 89 pr_debug("Samples differ at 'raw_data'\n");
111 return false; 90 return false;
112 } 91 }
113 } 92 }
114 93
115 if (type & PERF_SAMPLE_BRANCH_STACK) { 94 if (type & PERF_SAMPLE_BRANCH_STACK) {
116 COMP(branch_stack->nr); 95 COMP(branch_stack->nr);
117 COMP(branch_stack->hw_idx); !! 96 for (i = 0; i < s1->branch_stack->nr; i++)
118 for (i = 0; i < s1->branch_sta !! 97 MCOMP(branch_stack->entries[i]);
119 if (needs_swap) <<
120 return ((host_ <<
121 (FLAG( <<
122 (FLAG( <<
123 else <<
124 MCOMP(branch_s <<
125 } <<
126 } 98 }
127 99
128 if (type & PERF_SAMPLE_REGS_USER) { 100 if (type & PERF_SAMPLE_REGS_USER) {
129 size_t sz = hweight_long(s1->u 101 size_t sz = hweight_long(s1->user_regs.mask) * sizeof(u64);
130 102
131 COMP(user_regs.mask); 103 COMP(user_regs.mask);
132 COMP(user_regs.abi); 104 COMP(user_regs.abi);
133 if (s1->user_regs.abi && 105 if (s1->user_regs.abi &&
134 (!s1->user_regs.regs || !s 106 (!s1->user_regs.regs || !s2->user_regs.regs ||
135 memcmp(s1->user_regs.regs 107 memcmp(s1->user_regs.regs, s2->user_regs.regs, sz))) {
136 pr_debug("Samples diff 108 pr_debug("Samples differ at 'user_regs'\n");
137 return false; 109 return false;
138 } 110 }
139 } 111 }
140 112
141 if (type & PERF_SAMPLE_STACK_USER) { 113 if (type & PERF_SAMPLE_STACK_USER) {
142 COMP(user_stack.size); 114 COMP(user_stack.size);
143 if (memcmp(s1->user_stack.data 115 if (memcmp(s1->user_stack.data, s2->user_stack.data,
144 s1->user_stack.size 116 s1->user_stack.size)) {
145 pr_debug("Samples diff 117 pr_debug("Samples differ at 'user_stack'\n");
146 return false; 118 return false;
147 } 119 }
148 } 120 }
149 121
150 if (type & PERF_SAMPLE_WEIGHT) 122 if (type & PERF_SAMPLE_WEIGHT)
151 COMP(weight); 123 COMP(weight);
152 124
153 if (type & PERF_SAMPLE_DATA_SRC) 125 if (type & PERF_SAMPLE_DATA_SRC)
154 COMP(data_src); 126 COMP(data_src);
155 127
156 if (type & PERF_SAMPLE_TRANSACTION) 128 if (type & PERF_SAMPLE_TRANSACTION)
157 COMP(transaction); 129 COMP(transaction);
158 130
159 if (type & PERF_SAMPLE_REGS_INTR) { 131 if (type & PERF_SAMPLE_REGS_INTR) {
160 size_t sz = hweight_long(s1->i 132 size_t sz = hweight_long(s1->intr_regs.mask) * sizeof(u64);
161 133
162 COMP(intr_regs.mask); 134 COMP(intr_regs.mask);
163 COMP(intr_regs.abi); 135 COMP(intr_regs.abi);
164 if (s1->intr_regs.abi && 136 if (s1->intr_regs.abi &&
165 (!s1->intr_regs.regs || !s 137 (!s1->intr_regs.regs || !s2->intr_regs.regs ||
166 memcmp(s1->intr_regs.regs 138 memcmp(s1->intr_regs.regs, s2->intr_regs.regs, sz))) {
167 pr_debug("Samples diff 139 pr_debug("Samples differ at 'intr_regs'\n");
168 return false; 140 return false;
169 } 141 }
170 } 142 }
171 143
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; 144 return true;
194 } 145 }
195 146
196 static int do_test(u64 sample_type, u64 sample 147 static int do_test(u64 sample_type, u64 sample_regs, u64 read_format)
197 { 148 {
198 struct evsel evsel = { !! 149 struct perf_evsel evsel = {
199 .needs_swap = false, 150 .needs_swap = false,
200 .core = { !! 151 .attr = {
201 . attr = { !! 152 .sample_type = sample_type,
202 .sample_type = !! 153 .read_format = read_format,
203 .read_format = <<
204 }, <<
205 }, 154 },
206 }; 155 };
207 union perf_event *event; 156 union perf_event *event;
208 union { 157 union {
209 struct ip_callchain callchain; 158 struct ip_callchain callchain;
210 u64 data[64]; 159 u64 data[64];
211 } callchain = { 160 } callchain = {
212 /* 3 ips */ 161 /* 3 ips */
213 .data = {3, 201, 202, 203}, 162 .data = {3, 201, 202, 203},
214 }; 163 };
215 union { 164 union {
216 struct branch_stack branch_sta 165 struct branch_stack branch_stack;
217 u64 data[64]; 166 u64 data[64];
218 } branch_stack = { 167 } branch_stack = {
219 /* 1 branch_entry */ 168 /* 1 branch_entry */
220 .data = {1, -1ULL, 211, 212, 2 !! 169 .data = {1, 211, 212, 213},
221 }; 170 };
222 u64 regs[64]; 171 u64 regs[64];
223 const u32 raw_data[] = {0x12345678, 0x !! 172 const u64 raw_data[] = {0x123456780a0b0c0dULL, 0x1102030405060708ULL};
224 const u64 data[] = {0x2211443366558877 173 const u64 data[] = {0x2211443366558877ULL, 0, 0xaabbccddeeff4321ULL};
225 const u64 aux_data[] = {0xa55a, 0, 0xe <<
226 struct perf_sample sample = { 174 struct perf_sample sample = {
227 .ip = 101, 175 .ip = 101,
228 .pid = 102, 176 .pid = 102,
229 .tid = 103, 177 .tid = 103,
230 .time = 104, 178 .time = 104,
231 .addr = 105, 179 .addr = 105,
232 .id = 106, 180 .id = 106,
233 .stream_id = 107, 181 .stream_id = 107,
234 .period = 108, 182 .period = 108,
235 .weight = 109, 183 .weight = 109,
236 .cpu = 110, 184 .cpu = 110,
237 .raw_size = sizeof(raw_d 185 .raw_size = sizeof(raw_data),
238 .data_src = 111, 186 .data_src = 111,
239 .transaction = 112, 187 .transaction = 112,
240 .raw_data = (void *)raw_ 188 .raw_data = (void *)raw_data,
241 .callchain = &callchain.c 189 .callchain = &callchain.callchain,
242 .no_hw_idx = false, <<
243 .branch_stack = &branch_stac 190 .branch_stack = &branch_stack.branch_stack,
244 .user_regs = { 191 .user_regs = {
245 .abi = PERF_SAMPLE_ 192 .abi = PERF_SAMPLE_REGS_ABI_64,
246 .mask = sample_regs, 193 .mask = sample_regs,
247 .regs = regs, 194 .regs = regs,
248 }, 195 },
249 .user_stack = { 196 .user_stack = {
250 .size = sizeof(data) 197 .size = sizeof(data),
251 .data = (void *)data 198 .data = (void *)data,
252 }, 199 },
253 .read = { 200 .read = {
254 .time_enabled = 0x030a 201 .time_enabled = 0x030a59d664fca7deULL,
255 .time_running = 0x011b 202 .time_running = 0x011b6ae553eb98edULL,
256 }, 203 },
257 .intr_regs = { 204 .intr_regs = {
258 .abi = PERF_SAMPLE_ 205 .abi = PERF_SAMPLE_REGS_ABI_64,
259 .mask = sample_regs, 206 .mask = sample_regs,
260 .regs = regs, 207 .regs = regs,
261 }, 208 },
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 }; 209 };
271 struct sample_read_value values[] = {{ !! 210 struct sample_read_value values[] = {{1, 5}, {9, 3}, {2, 7}, {6, 4},};
272 struct perf_sample sample_out, sample_ !! 211 struct perf_sample sample_out;
273 size_t i, sz, bufsz; 212 size_t i, sz, bufsz;
274 int err, ret = -1; 213 int err, ret = -1;
275 214
276 if (sample_type & PERF_SAMPLE_REGS_USE 215 if (sample_type & PERF_SAMPLE_REGS_USER)
277 evsel.core.attr.sample_regs_us !! 216 evsel.attr.sample_regs_user = sample_regs;
278 217
279 if (sample_type & PERF_SAMPLE_REGS_INT 218 if (sample_type & PERF_SAMPLE_REGS_INTR)
280 evsel.core.attr.sample_regs_in !! 219 evsel.attr.sample_regs_intr = sample_regs;
281 <<
282 if (sample_type & PERF_SAMPLE_BRANCH_S <<
283 evsel.core.attr.branch_sample_ <<
284 220
285 for (i = 0; i < sizeof(regs); i++) 221 for (i = 0; i < sizeof(regs); i++)
286 *(i + (u8 *)regs) = i & 0xfe; 222 *(i + (u8 *)regs) = i & 0xfe;
287 223
288 if (read_format & PERF_FORMAT_GROUP) { 224 if (read_format & PERF_FORMAT_GROUP) {
289 sample.read.group.nr = 4; 225 sample.read.group.nr = 4;
290 sample.read.group.values = val 226 sample.read.group.values = values;
291 } else { 227 } else {
292 sample.read.one.value = 0x0878 228 sample.read.one.value = 0x08789faeb786aa87ULL;
293 sample.read.one.id = 99; 229 sample.read.one.id = 99;
294 sample.read.one.lost = 1; <<
295 } 230 }
296 231
297 sz = perf_event__sample_event_size(&sa 232 sz = perf_event__sample_event_size(&sample, sample_type, read_format);
298 bufsz = sz + 4096; /* Add a bit for ov 233 bufsz = sz + 4096; /* Add a bit for overrun checking */
299 event = malloc(bufsz); 234 event = malloc(bufsz);
300 if (!event) { 235 if (!event) {
301 pr_debug("malloc failed\n"); 236 pr_debug("malloc failed\n");
302 return -1; 237 return -1;
303 } 238 }
304 239
305 memset(event, 0xff, bufsz); 240 memset(event, 0xff, bufsz);
306 event->header.type = PERF_RECORD_SAMPL 241 event->header.type = PERF_RECORD_SAMPLE;
307 event->header.misc = 0; 242 event->header.misc = 0;
308 event->header.size = sz; 243 event->header.size = sz;
309 244
310 err = perf_event__synthesize_sample(ev 245 err = perf_event__synthesize_sample(event, sample_type, read_format,
311 &s !! 246 &sample, false);
312 if (err) { 247 if (err) {
313 pr_debug("%s failed for sample 248 pr_debug("%s failed for sample_type %#"PRIx64", error %d\n",
314 "perf_event__synthesi 249 "perf_event__synthesize_sample", sample_type, err);
315 goto out_free; 250 goto out_free;
316 } 251 }
317 252
318 /* The data does not contain 0xff so w 253 /* The data does not contain 0xff so we use that to check the size */
319 for (i = bufsz; i > 0; i--) { 254 for (i = bufsz; i > 0; i--) {
320 if (*(i - 1 + (u8 *)event) != 255 if (*(i - 1 + (u8 *)event) != 0xff)
321 break; 256 break;
322 } 257 }
323 if (i != sz) { 258 if (i != sz) {
324 pr_debug("Event size mismatch: 259 pr_debug("Event size mismatch: actual %zu vs expected %zu\n",
325 i, sz); 260 i, sz);
326 goto out_free; 261 goto out_free;
327 } 262 }
328 263
329 evsel.sample_size = __evsel__sample_si !! 264 evsel.sample_size = __perf_evsel__sample_size(sample_type);
330 265
331 err = evsel__parse_sample(&evsel, even !! 266 err = perf_evsel__parse_sample(&evsel, event, &sample_out);
332 if (err) { 267 if (err) {
333 pr_debug("%s failed for sample 268 pr_debug("%s failed for sample_type %#"PRIx64", error %d\n",
334 "evsel__parse_sample" !! 269 "perf_evsel__parse_sample", sample_type, err);
335 goto out_free; 270 goto out_free;
336 } 271 }
337 272
338 if (!samples_same(&sample, &sample_out !! 273 if (!samples_same(&sample, &sample_out, sample_type, read_format)) {
339 pr_debug("parsing failed for s 274 pr_debug("parsing failed for sample_type %#"PRIx64"\n",
340 sample_type); 275 sample_type);
341 goto out_free; 276 goto out_free;
342 } 277 }
343 278
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; 279 ret = 0;
362 out_free: 280 out_free:
363 free(event); 281 free(event);
364 if (ret && read_format) 282 if (ret && read_format)
365 pr_debug("read_format %#"PRIx6 283 pr_debug("read_format %#"PRIx64"\n", read_format);
366 return ret; 284 return ret;
367 } 285 }
368 286
369 /** 287 /**
370 * test__sample_parsing - test sample parsing. 288 * test__sample_parsing - test sample parsing.
371 * 289 *
372 * This function implements a test that synthe 290 * This function implements a test that synthesizes a sample event, parses it
373 * and then checks that the parsed sample matc 291 * and then checks that the parsed sample matches the original sample. The test
374 * checks sample format bits separately and to 292 * checks sample format bits separately and together. If the test passes %0 is
375 * returned, otherwise %-1 is returned. 293 * returned, otherwise %-1 is returned.
376 */ 294 */
377 static int test__sample_parsing(struct test_su !! 295 int test__sample_parsing(int subtest __maybe_unused)
378 { 296 {
379 const u64 rf[] = {4, 5, 6, 7, 12, 13, !! 297 const u64 rf[] = {4, 5, 6, 7, 12, 13, 14, 15};
380 u64 sample_type; 298 u64 sample_type;
381 u64 sample_regs; 299 u64 sample_regs;
382 size_t i; 300 size_t i;
383 int err; 301 int err;
384 302
385 /* 303 /*
386 * Fail the test if it has not been up 304 * Fail the test if it has not been updated when new sample format bits
387 * were added. Please actually update 305 * were added. Please actually update the test rather than just change
388 * the condition below. 306 * the condition below.
389 */ 307 */
390 if (PERF_SAMPLE_MAX > PERF_SAMPLE_WEIG !! 308 if (PERF_SAMPLE_MAX > PERF_SAMPLE_REGS_INTR << 1) {
391 pr_debug("sample format has ch 309 pr_debug("sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating\n");
392 return -1; 310 return -1;
393 } 311 }
394 312
395 /* Test each sample format bit separat 313 /* Test each sample format bit separately */
396 for (sample_type = 1; sample_type != P 314 for (sample_type = 1; sample_type != PERF_SAMPLE_MAX;
397 sample_type <<= 1) { 315 sample_type <<= 1) {
398 /* Test read_format variations 316 /* Test read_format variations */
399 if (sample_type == PERF_SAMPLE 317 if (sample_type == PERF_SAMPLE_READ) {
400 for (i = 0; i < ARRAY_ 318 for (i = 0; i < ARRAY_SIZE(rf); i++) {
401 err = do_test( 319 err = do_test(sample_type, 0, rf[i]);
402 if (err) 320 if (err)
403 return 321 return err;
404 } 322 }
405 continue; 323 continue;
406 } 324 }
407 sample_regs = 0; 325 sample_regs = 0;
408 326
409 if (sample_type == PERF_SAMPLE 327 if (sample_type == PERF_SAMPLE_REGS_USER)
410 sample_regs = 0x3fff; 328 sample_regs = 0x3fff;
411 329
412 if (sample_type == PERF_SAMPLE 330 if (sample_type == PERF_SAMPLE_REGS_INTR)
413 sample_regs = 0xff0fff 331 sample_regs = 0xff0fff;
414 332
415 err = do_test(sample_type, sam 333 err = do_test(sample_type, sample_regs, 0);
416 if (err) 334 if (err)
417 return err; 335 return err;
418 } 336 }
419 337
420 /* !! 338 /* Test all sample format bits together */
421 * Test all sample format bits togethe !! 339 sample_type = PERF_SAMPLE_MAX - 1;
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 340 sample_regs = 0x3fff; /* shared yb intr and user regs */
427 for (i = 0; i < ARRAY_SIZE(rf); i++) { 341 for (i = 0; i < ARRAY_SIZE(rf); i++) {
428 err = do_test(sample_type, sam 342 err = do_test(sample_type, sample_regs, rf[i]);
429 if (err) 343 if (err)
430 return err; 344 return err;
431 } 345 }
432 346
433 return 0; 347 return 0;
434 } 348 }
435 <<
436 DEFINE_SUITE("Sample parsing", sample_parsing) <<
437 349
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