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Commit | Line | Data |
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f8ebb0cd NK |
1 | #include "perf.h" |
2 | #include "tests.h" | |
3 | #include "debug.h" | |
4 | #include "symbol.h" | |
5 | #include "sort.h" | |
6 | #include "evsel.h" | |
7 | #include "evlist.h" | |
8 | #include "machine.h" | |
9 | #include "thread.h" | |
10 | #include "parse-events.h" | |
6e344a95 | 11 | #include "hists_common.h" |
f8ebb0cd NK |
12 | |
13 | struct sample { | |
14 | u32 pid; | |
15 | u64 ip; | |
16 | struct thread *thread; | |
17 | struct map *map; | |
18 | struct symbol *sym; | |
19 | }; | |
20 | ||
6e344a95 | 21 | /* For the numbers, see hists_common.c */ |
f8ebb0cd NK |
22 | static struct sample fake_common_samples[] = { |
23 | /* perf [kernel] schedule() */ | |
a1891aa4 | 24 | { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, }, |
f8ebb0cd | 25 | /* perf [perf] main() */ |
a1891aa4 | 26 | { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, }, |
f8ebb0cd | 27 | /* perf [perf] cmd_record() */ |
a1891aa4 | 28 | { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, }, |
f8ebb0cd | 29 | /* bash [bash] xmalloc() */ |
a1891aa4 | 30 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, }, |
f8ebb0cd | 31 | /* bash [libc] malloc() */ |
a1891aa4 | 32 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, |
f8ebb0cd NK |
33 | }; |
34 | ||
35 | static struct sample fake_samples[][5] = { | |
36 | { | |
37 | /* perf [perf] run_command() */ | |
a1891aa4 | 38 | { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_RUN_COMMAND, }, |
f8ebb0cd | 39 | /* perf [libc] malloc() */ |
a1891aa4 | 40 | { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, }, |
f8ebb0cd | 41 | /* perf [kernel] page_fault() */ |
a1891aa4 | 42 | { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, |
f8ebb0cd | 43 | /* perf [kernel] sys_perf_event_open() */ |
a1891aa4 | 44 | { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, }, |
f8ebb0cd | 45 | /* bash [libc] free() */ |
a1891aa4 | 46 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_FREE, }, |
f8ebb0cd NK |
47 | }, |
48 | { | |
49 | /* perf [libc] free() */ | |
a1891aa4 | 50 | { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_LIBC_FREE, }, |
f8ebb0cd | 51 | /* bash [libc] malloc() */ |
a1891aa4 | 52 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, /* will be merged */ |
f8ebb0cd | 53 | /* bash [bash] xfee() */ |
a1891aa4 | 54 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XFREE, }, |
f8ebb0cd | 55 | /* bash [libc] realloc() */ |
a1891aa4 | 56 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_REALLOC, }, |
f8ebb0cd | 57 | /* bash [kernel] page_fault() */ |
a1891aa4 | 58 | { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, |
f8ebb0cd NK |
59 | }, |
60 | }; | |
61 | ||
62 | static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) | |
63 | { | |
64 | struct perf_evsel *evsel; | |
65 | struct addr_location al; | |
66 | struct hist_entry *he; | |
fd36f3dd | 67 | struct perf_sample sample = { .period = 1, .weight = 1, }; |
f8ebb0cd NK |
68 | size_t i = 0, k; |
69 | ||
70 | /* | |
71 | * each evsel will have 10 samples - 5 common and 5 distinct. | |
72 | * However the second evsel also has a collapsed entry for | |
73 | * "bash [libc] malloc" so total 9 entries will be in the tree. | |
74 | */ | |
0050f7aa | 75 | evlist__for_each(evlist, evsel) { |
4ea062ed ACM |
76 | struct hists *hists = evsel__hists(evsel); |
77 | ||
f8ebb0cd NK |
78 | for (k = 0; k < ARRAY_SIZE(fake_common_samples); k++) { |
79 | const union perf_event event = { | |
ef89325f AH |
80 | .header = { |
81 | .misc = PERF_RECORD_MISC_USER, | |
f8ebb0cd NK |
82 | }, |
83 | }; | |
84 | ||
ef89325f | 85 | sample.pid = fake_common_samples[k].pid; |
13ce34df | 86 | sample.tid = fake_common_samples[k].pid; |
ef89325f | 87 | sample.ip = fake_common_samples[k].ip; |
f8ebb0cd | 88 | if (perf_event__preprocess_sample(&event, machine, &al, |
e44baa3e | 89 | &sample) < 0) |
f8ebb0cd NK |
90 | goto out; |
91 | ||
4ea062ed | 92 | he = __hists__add_entry(hists, &al, NULL, |
fd36f3dd | 93 | NULL, NULL, &sample, true); |
b91fc39f ACM |
94 | if (he == NULL) { |
95 | addr_location__put(&al); | |
f8ebb0cd | 96 | goto out; |
b91fc39f | 97 | } |
f8ebb0cd NK |
98 | |
99 | fake_common_samples[k].thread = al.thread; | |
100 | fake_common_samples[k].map = al.map; | |
101 | fake_common_samples[k].sym = al.sym; | |
102 | } | |
103 | ||
104 | for (k = 0; k < ARRAY_SIZE(fake_samples[i]); k++) { | |
105 | const union perf_event event = { | |
ef89325f AH |
106 | .header = { |
107 | .misc = PERF_RECORD_MISC_USER, | |
f8ebb0cd NK |
108 | }, |
109 | }; | |
110 | ||
ef89325f | 111 | sample.pid = fake_samples[i][k].pid; |
13ce34df | 112 | sample.tid = fake_samples[i][k].pid; |
ef89325f | 113 | sample.ip = fake_samples[i][k].ip; |
f8ebb0cd | 114 | if (perf_event__preprocess_sample(&event, machine, &al, |
e44baa3e | 115 | &sample) < 0) |
f8ebb0cd NK |
116 | goto out; |
117 | ||
4ea062ed | 118 | he = __hists__add_entry(hists, &al, NULL, |
fd36f3dd | 119 | NULL, NULL, &sample, true); |
b91fc39f ACM |
120 | if (he == NULL) { |
121 | addr_location__put(&al); | |
f8ebb0cd | 122 | goto out; |
b91fc39f | 123 | } |
f8ebb0cd NK |
124 | |
125 | fake_samples[i][k].thread = al.thread; | |
126 | fake_samples[i][k].map = al.map; | |
127 | fake_samples[i][k].sym = al.sym; | |
128 | } | |
129 | i++; | |
130 | } | |
131 | ||
132 | return 0; | |
133 | ||
134 | out: | |
135 | pr_debug("Not enough memory for adding a hist entry\n"); | |
136 | return -1; | |
137 | } | |
138 | ||
139 | static int find_sample(struct sample *samples, size_t nr_samples, | |
140 | struct thread *t, struct map *m, struct symbol *s) | |
141 | { | |
142 | while (nr_samples--) { | |
143 | if (samples->thread == t && samples->map == m && | |
144 | samples->sym == s) | |
145 | return 1; | |
146 | samples++; | |
147 | } | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int __validate_match(struct hists *hists) | |
152 | { | |
153 | size_t count = 0; | |
154 | struct rb_root *root; | |
155 | struct rb_node *node; | |
156 | ||
157 | /* | |
158 | * Only entries from fake_common_samples should have a pair. | |
159 | */ | |
160 | if (sort__need_collapse) | |
161 | root = &hists->entries_collapsed; | |
162 | else | |
163 | root = hists->entries_in; | |
164 | ||
165 | node = rb_first(root); | |
166 | while (node) { | |
167 | struct hist_entry *he; | |
168 | ||
169 | he = rb_entry(node, struct hist_entry, rb_node_in); | |
170 | ||
171 | if (hist_entry__has_pairs(he)) { | |
172 | if (find_sample(fake_common_samples, | |
173 | ARRAY_SIZE(fake_common_samples), | |
174 | he->thread, he->ms.map, he->ms.sym)) { | |
175 | count++; | |
176 | } else { | |
177 | pr_debug("Can't find the matched entry\n"); | |
178 | return -1; | |
179 | } | |
180 | } | |
181 | ||
182 | node = rb_next(node); | |
183 | } | |
184 | ||
185 | if (count != ARRAY_SIZE(fake_common_samples)) { | |
186 | pr_debug("Invalid count for matched entries: %zd of %zd\n", | |
187 | count, ARRAY_SIZE(fake_common_samples)); | |
188 | return -1; | |
189 | } | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int validate_match(struct hists *leader, struct hists *other) | |
195 | { | |
196 | return __validate_match(leader) || __validate_match(other); | |
197 | } | |
198 | ||
199 | static int __validate_link(struct hists *hists, int idx) | |
200 | { | |
201 | size_t count = 0; | |
202 | size_t count_pair = 0; | |
203 | size_t count_dummy = 0; | |
204 | struct rb_root *root; | |
205 | struct rb_node *node; | |
206 | ||
207 | /* | |
208 | * Leader hists (idx = 0) will have dummy entries from other, | |
209 | * and some entries will have no pair. However every entry | |
210 | * in other hists should have (dummy) pair. | |
211 | */ | |
212 | if (sort__need_collapse) | |
213 | root = &hists->entries_collapsed; | |
214 | else | |
215 | root = hists->entries_in; | |
216 | ||
217 | node = rb_first(root); | |
218 | while (node) { | |
219 | struct hist_entry *he; | |
220 | ||
221 | he = rb_entry(node, struct hist_entry, rb_node_in); | |
222 | ||
223 | if (hist_entry__has_pairs(he)) { | |
224 | if (!find_sample(fake_common_samples, | |
225 | ARRAY_SIZE(fake_common_samples), | |
226 | he->thread, he->ms.map, he->ms.sym) && | |
227 | !find_sample(fake_samples[idx], | |
228 | ARRAY_SIZE(fake_samples[idx]), | |
229 | he->thread, he->ms.map, he->ms.sym)) { | |
230 | count_dummy++; | |
231 | } | |
232 | count_pair++; | |
233 | } else if (idx) { | |
234 | pr_debug("A entry from the other hists should have pair\n"); | |
235 | return -1; | |
236 | } | |
237 | ||
238 | count++; | |
239 | node = rb_next(node); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Note that we have a entry collapsed in the other (idx = 1) hists. | |
244 | */ | |
245 | if (idx == 0) { | |
246 | if (count_dummy != ARRAY_SIZE(fake_samples[1]) - 1) { | |
247 | pr_debug("Invalid count of dummy entries: %zd of %zd\n", | |
248 | count_dummy, ARRAY_SIZE(fake_samples[1]) - 1); | |
249 | return -1; | |
250 | } | |
251 | if (count != count_pair + ARRAY_SIZE(fake_samples[0])) { | |
252 | pr_debug("Invalid count of total leader entries: %zd of %zd\n", | |
253 | count, count_pair + ARRAY_SIZE(fake_samples[0])); | |
254 | return -1; | |
255 | } | |
256 | } else { | |
257 | if (count != count_pair) { | |
258 | pr_debug("Invalid count of total other entries: %zd of %zd\n", | |
259 | count, count_pair); | |
260 | return -1; | |
261 | } | |
262 | if (count_dummy > 0) { | |
263 | pr_debug("Other hists should not have dummy entries: %zd\n", | |
264 | count_dummy); | |
265 | return -1; | |
266 | } | |
267 | } | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static int validate_link(struct hists *leader, struct hists *other) | |
273 | { | |
274 | return __validate_link(leader, 0) || __validate_link(other, 1); | |
275 | } | |
276 | ||
721a1f53 | 277 | int test__hists_link(int subtest __maybe_unused) |
f8ebb0cd NK |
278 | { |
279 | int err = -1; | |
4ea062ed | 280 | struct hists *hists, *first_hists; |
876650e6 | 281 | struct machines machines; |
f8ebb0cd NK |
282 | struct machine *machine = NULL; |
283 | struct perf_evsel *evsel, *first; | |
334fe7a3 | 284 | struct perf_evlist *evlist = perf_evlist__new(); |
f8ebb0cd NK |
285 | |
286 | if (evlist == NULL) | |
287 | return -ENOMEM; | |
288 | ||
b39b8393 | 289 | err = parse_events(evlist, "cpu-clock", NULL); |
f8ebb0cd NK |
290 | if (err) |
291 | goto out; | |
b39b8393 | 292 | err = parse_events(evlist, "task-clock", NULL); |
f8ebb0cd NK |
293 | if (err) |
294 | goto out; | |
295 | ||
296 | /* default sort order (comm,dso,sym) will be used */ | |
40184c46 | 297 | if (setup_sorting(NULL) < 0) |
55309985 | 298 | goto out; |
f8ebb0cd | 299 | |
876650e6 ACM |
300 | machines__init(&machines); |
301 | ||
f8ebb0cd | 302 | /* setup threads/dso/map/symbols also */ |
876650e6 | 303 | machine = setup_fake_machine(&machines); |
f8ebb0cd NK |
304 | if (!machine) |
305 | goto out; | |
306 | ||
307 | if (verbose > 1) | |
308 | machine__fprintf(machine, stderr); | |
309 | ||
310 | /* process sample events */ | |
311 | err = add_hist_entries(evlist, machine); | |
312 | if (err < 0) | |
313 | goto out; | |
314 | ||
0050f7aa | 315 | evlist__for_each(evlist, evsel) { |
4ea062ed ACM |
316 | hists = evsel__hists(evsel); |
317 | hists__collapse_resort(hists, NULL); | |
f8ebb0cd NK |
318 | |
319 | if (verbose > 2) | |
4ea062ed | 320 | print_hists_in(hists); |
f8ebb0cd NK |
321 | } |
322 | ||
323 | first = perf_evlist__first(evlist); | |
324 | evsel = perf_evlist__last(evlist); | |
325 | ||
4ea062ed ACM |
326 | first_hists = evsel__hists(first); |
327 | hists = evsel__hists(evsel); | |
328 | ||
f8ebb0cd | 329 | /* match common entries */ |
4ea062ed ACM |
330 | hists__match(first_hists, hists); |
331 | err = validate_match(first_hists, hists); | |
f8ebb0cd NK |
332 | if (err) |
333 | goto out; | |
334 | ||
335 | /* link common and/or dummy entries */ | |
4ea062ed ACM |
336 | hists__link(first_hists, hists); |
337 | err = validate_link(first_hists, hists); | |
f8ebb0cd NK |
338 | if (err) |
339 | goto out; | |
340 | ||
341 | err = 0; | |
342 | ||
343 | out: | |
344 | /* tear down everything */ | |
345 | perf_evlist__delete(evlist); | |
f21d1815 | 346 | reset_output_field(); |
876650e6 | 347 | machines__exit(&machines); |
f8ebb0cd NK |
348 | |
349 | return err; | |
350 | } |