Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1 | /* |
| 2 | * builtin-test.c |
| 3 | * |
| 4 | * Builtin regression testing command: ever growing number of sanity tests |
| 5 | */ |
| 6 | #include "builtin.h" |
| 7 | |
| 8 | #include "util/cache.h" |
| 9 | #include "util/debug.h" |
Arnaldo Carvalho de Melo | ebf294b | 2011-11-16 14:03:07 -0200 | [diff] [blame] | 10 | #include "util/debugfs.h" |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 11 | #include "util/evlist.h" |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 12 | #include "util/parse-options.h" |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 13 | #include "util/parse-events.h" |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 14 | #include "util/symbol.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 15 | #include "util/thread_map.h" |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 16 | #include "../../include/linux/hw_breakpoint.h" |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 17 | |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 18 | static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym) |
| 19 | { |
| 20 | bool *visited = symbol__priv(sym); |
| 21 | *visited = true; |
| 22 | return 0; |
| 23 | } |
| 24 | |
| 25 | static int test__vmlinux_matches_kallsyms(void) |
| 26 | { |
| 27 | int err = -1; |
| 28 | struct rb_node *nd; |
| 29 | struct symbol *sym; |
| 30 | struct map *kallsyms_map, *vmlinux_map; |
| 31 | struct machine kallsyms, vmlinux; |
| 32 | enum map_type type = MAP__FUNCTION; |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 33 | long page_size = sysconf(_SC_PAGE_SIZE); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 34 | struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; |
| 35 | |
| 36 | /* |
| 37 | * Step 1: |
| 38 | * |
| 39 | * Init the machines that will hold kernel, modules obtained from |
| 40 | * both vmlinux + .ko files and from /proc/kallsyms split by modules. |
| 41 | */ |
| 42 | machine__init(&kallsyms, "", HOST_KERNEL_ID); |
| 43 | machine__init(&vmlinux, "", HOST_KERNEL_ID); |
| 44 | |
| 45 | /* |
| 46 | * Step 2: |
| 47 | * |
| 48 | * Create the kernel maps for kallsyms and the DSO where we will then |
| 49 | * load /proc/kallsyms. Also create the modules maps from /proc/modules |
| 50 | * and find the .ko files that match them in /lib/modules/`uname -r`/. |
| 51 | */ |
| 52 | if (machine__create_kernel_maps(&kallsyms) < 0) { |
| 53 | pr_debug("machine__create_kernel_maps "); |
| 54 | return -1; |
| 55 | } |
| 56 | |
| 57 | /* |
| 58 | * Step 3: |
| 59 | * |
| 60 | * Load and split /proc/kallsyms into multiple maps, one per module. |
| 61 | */ |
| 62 | if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, NULL) <= 0) { |
| 63 | pr_debug("dso__load_kallsyms "); |
| 64 | goto out; |
| 65 | } |
| 66 | |
| 67 | /* |
| 68 | * Step 4: |
| 69 | * |
| 70 | * kallsyms will be internally on demand sorted by name so that we can |
| 71 | * find the reference relocation * symbol, i.e. the symbol we will use |
| 72 | * to see if the running kernel was relocated by checking if it has the |
| 73 | * same value in the vmlinux file we load. |
| 74 | */ |
| 75 | kallsyms_map = machine__kernel_map(&kallsyms, type); |
| 76 | |
| 77 | sym = map__find_symbol_by_name(kallsyms_map, ref_reloc_sym.name, NULL); |
| 78 | if (sym == NULL) { |
| 79 | pr_debug("dso__find_symbol_by_name "); |
| 80 | goto out; |
| 81 | } |
| 82 | |
| 83 | ref_reloc_sym.addr = sym->start; |
| 84 | |
| 85 | /* |
| 86 | * Step 5: |
| 87 | * |
| 88 | * Now repeat step 2, this time for the vmlinux file we'll auto-locate. |
| 89 | */ |
| 90 | if (machine__create_kernel_maps(&vmlinux) < 0) { |
| 91 | pr_debug("machine__create_kernel_maps "); |
| 92 | goto out; |
| 93 | } |
| 94 | |
| 95 | vmlinux_map = machine__kernel_map(&vmlinux, type); |
| 96 | map__kmap(vmlinux_map)->ref_reloc_sym = &ref_reloc_sym; |
| 97 | |
| 98 | /* |
| 99 | * Step 6: |
| 100 | * |
| 101 | * Locate a vmlinux file in the vmlinux path that has a buildid that |
| 102 | * matches the one of the running kernel. |
| 103 | * |
| 104 | * While doing that look if we find the ref reloc symbol, if we find it |
| 105 | * we'll have its ref_reloc_symbol.unrelocated_addr and then |
| 106 | * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines |
| 107 | * to fixup the symbols. |
| 108 | */ |
| 109 | if (machine__load_vmlinux_path(&vmlinux, type, |
| 110 | vmlinux_matches_kallsyms_filter) <= 0) { |
| 111 | pr_debug("machine__load_vmlinux_path "); |
| 112 | goto out; |
| 113 | } |
| 114 | |
| 115 | err = 0; |
| 116 | /* |
| 117 | * Step 7: |
| 118 | * |
| 119 | * Now look at the symbols in the vmlinux DSO and check if we find all of them |
| 120 | * in the kallsyms dso. For the ones that are in both, check its names and |
| 121 | * end addresses too. |
| 122 | */ |
| 123 | for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | d367875 | 2010-12-21 23:38:37 -0200 | [diff] [blame] | 124 | struct symbol *pair, *first_pair; |
| 125 | bool backwards = true; |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 126 | |
| 127 | sym = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | d367875 | 2010-12-21 23:38:37 -0200 | [diff] [blame] | 128 | |
| 129 | if (sym->start == sym->end) |
| 130 | continue; |
| 131 | |
| 132 | first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); |
| 133 | pair = first_pair; |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 134 | |
| 135 | if (pair && pair->start == sym->start) { |
| 136 | next_pair: |
| 137 | if (strcmp(sym->name, pair->name) == 0) { |
| 138 | /* |
| 139 | * kallsyms don't have the symbol end, so we |
| 140 | * set that by using the next symbol start - 1, |
| 141 | * in some cases we get this up to a page |
| 142 | * wrong, trace_kmalloc when I was developing |
| 143 | * this code was one such example, 2106 bytes |
| 144 | * off the real size. More than that and we |
| 145 | * _really_ have a problem. |
| 146 | */ |
| 147 | s64 skew = sym->end - pair->end; |
| 148 | if (llabs(skew) < page_size) |
| 149 | continue; |
| 150 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 151 | pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 152 | sym->start, sym->name, sym->end, pair->end); |
| 153 | } else { |
Arnaldo Carvalho de Melo | d367875 | 2010-12-21 23:38:37 -0200 | [diff] [blame] | 154 | struct rb_node *nnd; |
| 155 | detour: |
| 156 | nnd = backwards ? rb_prev(&pair->rb_node) : |
| 157 | rb_next(&pair->rb_node); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 158 | if (nnd) { |
| 159 | struct symbol *next = rb_entry(nnd, struct symbol, rb_node); |
| 160 | |
| 161 | if (next->start == sym->start) { |
| 162 | pair = next; |
| 163 | goto next_pair; |
| 164 | } |
| 165 | } |
Arnaldo Carvalho de Melo | d367875 | 2010-12-21 23:38:37 -0200 | [diff] [blame] | 166 | |
| 167 | if (backwards) { |
| 168 | backwards = false; |
| 169 | pair = first_pair; |
| 170 | goto detour; |
| 171 | } |
| 172 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 173 | pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 174 | sym->start, sym->name, pair->name); |
| 175 | } |
| 176 | } else |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 177 | pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 178 | |
| 179 | err = -1; |
| 180 | } |
| 181 | |
| 182 | if (!verbose) |
| 183 | goto out; |
| 184 | |
| 185 | pr_info("Maps only in vmlinux:\n"); |
| 186 | |
| 187 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { |
| 188 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; |
| 189 | /* |
| 190 | * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while |
| 191 | * the kernel will have the path for the vmlinux file being used, |
| 192 | * so use the short name, less descriptive but the same ("[kernel]" in |
| 193 | * both cases. |
| 194 | */ |
| 195 | pair = map_groups__find_by_name(&kallsyms.kmaps, type, |
| 196 | (pos->dso->kernel ? |
| 197 | pos->dso->short_name : |
| 198 | pos->dso->name)); |
| 199 | if (pair) |
| 200 | pair->priv = 1; |
| 201 | else |
| 202 | map__fprintf(pos, stderr); |
| 203 | } |
| 204 | |
| 205 | pr_info("Maps in vmlinux with a different name in kallsyms:\n"); |
| 206 | |
| 207 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { |
| 208 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; |
| 209 | |
| 210 | pair = map_groups__find(&kallsyms.kmaps, type, pos->start); |
| 211 | if (pair == NULL || pair->priv) |
| 212 | continue; |
| 213 | |
| 214 | if (pair->start == pos->start) { |
| 215 | pair->priv = 1; |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 216 | pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 217 | pos->start, pos->end, pos->pgoff, pos->dso->name); |
| 218 | if (pos->pgoff != pair->pgoff || pos->end != pair->end) |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 219 | pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 220 | pair->start, pair->end, pair->pgoff); |
| 221 | pr_info(" %s\n", pair->dso->name); |
| 222 | pair->priv = 1; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | pr_info("Maps only in kallsyms:\n"); |
| 227 | |
| 228 | for (nd = rb_first(&kallsyms.kmaps.maps[type]); |
| 229 | nd; nd = rb_next(nd)) { |
| 230 | struct map *pos = rb_entry(nd, struct map, rb_node); |
| 231 | |
| 232 | if (!pos->priv) |
| 233 | map__fprintf(pos, stderr); |
| 234 | } |
| 235 | out: |
| 236 | return err; |
| 237 | } |
| 238 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 239 | #include "util/cpumap.h" |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 240 | #include "util/evsel.h" |
| 241 | #include <sys/types.h> |
| 242 | |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 243 | static int trace_event__id(const char *evname) |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 244 | { |
| 245 | char *filename; |
| 246 | int err = -1, fd; |
| 247 | |
| 248 | if (asprintf(&filename, |
Jiri Olsa | baf040a | 2011-07-14 11:25:34 +0200 | [diff] [blame] | 249 | "%s/syscalls/%s/id", |
Arnaldo Carvalho de Melo | ebf294b | 2011-11-16 14:03:07 -0200 | [diff] [blame] | 250 | tracing_events_path, evname) < 0) |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 251 | return -1; |
| 252 | |
| 253 | fd = open(filename, O_RDONLY); |
| 254 | if (fd >= 0) { |
| 255 | char id[16]; |
| 256 | if (read(fd, id, sizeof(id)) > 0) |
| 257 | err = atoi(id); |
| 258 | close(fd); |
| 259 | } |
| 260 | |
| 261 | free(filename); |
| 262 | return err; |
| 263 | } |
| 264 | |
| 265 | static int test__open_syscall_event(void) |
| 266 | { |
| 267 | int err = -1, fd; |
| 268 | struct thread_map *threads; |
| 269 | struct perf_evsel *evsel; |
Lin Ming | 23a2f3a | 2011-01-07 11:11:09 +0800 | [diff] [blame] | 270 | struct perf_event_attr attr; |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 271 | unsigned int nr_open_calls = 111, i; |
| 272 | int id = trace_event__id("sys_enter_open"); |
| 273 | |
| 274 | if (id < 0) { |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 275 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 276 | return -1; |
| 277 | } |
| 278 | |
| 279 | threads = thread_map__new(-1, getpid()); |
| 280 | if (threads == NULL) { |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 281 | pr_debug("thread_map__new\n"); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 282 | return -1; |
| 283 | } |
| 284 | |
Lin Ming | 23a2f3a | 2011-01-07 11:11:09 +0800 | [diff] [blame] | 285 | memset(&attr, 0, sizeof(attr)); |
| 286 | attr.type = PERF_TYPE_TRACEPOINT; |
| 287 | attr.config = id; |
| 288 | evsel = perf_evsel__new(&attr, 0); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 289 | if (evsel == NULL) { |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 290 | pr_debug("perf_evsel__new\n"); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 291 | goto out_thread_map_delete; |
| 292 | } |
| 293 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 294 | if (perf_evsel__open_per_thread(evsel, threads, false, NULL) < 0) { |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 295 | pr_debug("failed to open counter: %s, " |
| 296 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", |
| 297 | strerror(errno)); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 298 | goto out_evsel_delete; |
| 299 | } |
| 300 | |
| 301 | for (i = 0; i < nr_open_calls; ++i) { |
| 302 | fd = open("/etc/passwd", O_RDONLY); |
| 303 | close(fd); |
| 304 | } |
| 305 | |
| 306 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { |
Arnaldo Carvalho de Melo | 5d2cd90 | 2011-04-14 11:20:14 -0300 | [diff] [blame] | 307 | pr_debug("perf_evsel__read_on_cpu\n"); |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 308 | goto out_close_fd; |
| 309 | } |
| 310 | |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 311 | if (evsel->counts->cpu[0].val != nr_open_calls) { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 312 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 313 | nr_open_calls, evsel->counts->cpu[0].val); |
Arnaldo Carvalho de Melo | 454a3bb | 2011-01-04 10:40:08 -0200 | [diff] [blame] | 314 | goto out_close_fd; |
| 315 | } |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 316 | |
| 317 | err = 0; |
| 318 | out_close_fd: |
| 319 | perf_evsel__close_fd(evsel, 1, threads->nr); |
| 320 | out_evsel_delete: |
| 321 | perf_evsel__delete(evsel); |
| 322 | out_thread_map_delete: |
| 323 | thread_map__delete(threads); |
| 324 | return err; |
| 325 | } |
| 326 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 327 | #include <sched.h> |
| 328 | |
| 329 | static int test__open_syscall_event_on_all_cpus(void) |
| 330 | { |
| 331 | int err = -1, fd, cpu; |
| 332 | struct thread_map *threads; |
| 333 | struct cpu_map *cpus; |
| 334 | struct perf_evsel *evsel; |
| 335 | struct perf_event_attr attr; |
| 336 | unsigned int nr_open_calls = 111, i; |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 337 | cpu_set_t cpu_set; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 338 | int id = trace_event__id("sys_enter_open"); |
| 339 | |
| 340 | if (id < 0) { |
| 341 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
| 342 | return -1; |
| 343 | } |
| 344 | |
| 345 | threads = thread_map__new(-1, getpid()); |
| 346 | if (threads == NULL) { |
| 347 | pr_debug("thread_map__new\n"); |
| 348 | return -1; |
| 349 | } |
| 350 | |
| 351 | cpus = cpu_map__new(NULL); |
Han Pingtian | 98d77b7 | 2011-01-15 07:00:50 +0800 | [diff] [blame] | 352 | if (cpus == NULL) { |
| 353 | pr_debug("cpu_map__new\n"); |
| 354 | goto out_thread_map_delete; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 355 | } |
| 356 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 357 | |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 358 | CPU_ZERO(&cpu_set); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 359 | |
| 360 | memset(&attr, 0, sizeof(attr)); |
| 361 | attr.type = PERF_TYPE_TRACEPOINT; |
| 362 | attr.config = id; |
| 363 | evsel = perf_evsel__new(&attr, 0); |
| 364 | if (evsel == NULL) { |
| 365 | pr_debug("perf_evsel__new\n"); |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 366 | goto out_thread_map_delete; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 367 | } |
| 368 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 369 | if (perf_evsel__open(evsel, cpus, threads, false, NULL) < 0) { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 370 | pr_debug("failed to open counter: %s, " |
| 371 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", |
| 372 | strerror(errno)); |
| 373 | goto out_evsel_delete; |
| 374 | } |
| 375 | |
| 376 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
| 377 | unsigned int ncalls = nr_open_calls + cpu; |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 378 | /* |
| 379 | * XXX eventually lift this restriction in a way that |
| 380 | * keeps perf building on older glibc installations |
| 381 | * without CPU_ALLOC. 1024 cpus in 2010 still seems |
| 382 | * a reasonable upper limit tho :-) |
| 383 | */ |
| 384 | if (cpus->map[cpu] >= CPU_SETSIZE) { |
| 385 | pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); |
| 386 | continue; |
| 387 | } |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 388 | |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 389 | CPU_SET(cpus->map[cpu], &cpu_set); |
| 390 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { |
Han Pingtian | ffb5e0f | 2011-01-20 19:47:07 +0800 | [diff] [blame] | 391 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
| 392 | cpus->map[cpu], |
| 393 | strerror(errno)); |
| 394 | goto out_close_fd; |
| 395 | } |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 396 | for (i = 0; i < ncalls; ++i) { |
| 397 | fd = open("/etc/passwd", O_RDONLY); |
| 398 | close(fd); |
| 399 | } |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 400 | CPU_CLR(cpus->map[cpu], &cpu_set); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | /* |
| 404 | * Here we need to explicitely preallocate the counts, as if |
| 405 | * we use the auto allocation it will allocate just for 1 cpu, |
| 406 | * as we start by cpu 0. |
| 407 | */ |
| 408 | if (perf_evsel__alloc_counts(evsel, cpus->nr) < 0) { |
| 409 | pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr); |
| 410 | goto out_close_fd; |
| 411 | } |
| 412 | |
Arnaldo Carvalho de Melo | d2af968 | 2011-01-14 16:24:49 -0200 | [diff] [blame] | 413 | err = 0; |
| 414 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 415 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
| 416 | unsigned int expected; |
| 417 | |
Arnaldo Carvalho de Melo | 57b84e5 | 2011-01-22 23:14:20 -0200 | [diff] [blame] | 418 | if (cpus->map[cpu] >= CPU_SETSIZE) |
| 419 | continue; |
| 420 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 421 | if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { |
Arnaldo Carvalho de Melo | 5d2cd90 | 2011-04-14 11:20:14 -0300 | [diff] [blame] | 422 | pr_debug("perf_evsel__read_on_cpu\n"); |
Arnaldo Carvalho de Melo | d2af968 | 2011-01-14 16:24:49 -0200 | [diff] [blame] | 423 | err = -1; |
| 424 | break; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | expected = nr_open_calls + cpu; |
| 428 | if (evsel->counts->cpu[cpu].val != expected) { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 429 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", |
Han Pingtian | ffb5e0f | 2011-01-20 19:47:07 +0800 | [diff] [blame] | 430 | expected, cpus->map[cpu], evsel->counts->cpu[cpu].val); |
Arnaldo Carvalho de Melo | d2af968 | 2011-01-14 16:24:49 -0200 | [diff] [blame] | 431 | err = -1; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 432 | } |
| 433 | } |
| 434 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 435 | out_close_fd: |
| 436 | perf_evsel__close_fd(evsel, 1, threads->nr); |
| 437 | out_evsel_delete: |
| 438 | perf_evsel__delete(evsel); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 439 | out_thread_map_delete: |
| 440 | thread_map__delete(threads); |
| 441 | return err; |
| 442 | } |
| 443 | |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 444 | /* |
| 445 | * This test will generate random numbers of calls to some getpid syscalls, |
| 446 | * then establish an mmap for a group of events that are created to monitor |
| 447 | * the syscalls. |
| 448 | * |
| 449 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated |
| 450 | * sample.id field to map back to its respective perf_evsel instance. |
| 451 | * |
| 452 | * Then it checks if the number of syscalls reported as perf events by |
| 453 | * the kernel corresponds to the number of syscalls made. |
| 454 | */ |
| 455 | static int test__basic_mmap(void) |
| 456 | { |
| 457 | int err = -1; |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 458 | union perf_event *event; |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 459 | struct thread_map *threads; |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 460 | struct cpu_map *cpus; |
| 461 | struct perf_evlist *evlist; |
| 462 | struct perf_event_attr attr = { |
| 463 | .type = PERF_TYPE_TRACEPOINT, |
| 464 | .read_format = PERF_FORMAT_ID, |
| 465 | .sample_type = PERF_SAMPLE_ID, |
| 466 | .watermark = 0, |
| 467 | }; |
| 468 | cpu_set_t cpu_set; |
| 469 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", |
| 470 | "getpgid", }; |
| 471 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, |
| 472 | (void*)getpgid }; |
| 473 | #define nsyscalls ARRAY_SIZE(syscall_names) |
| 474 | int ids[nsyscalls]; |
| 475 | unsigned int nr_events[nsyscalls], |
| 476 | expected_nr_events[nsyscalls], i, j; |
| 477 | struct perf_evsel *evsels[nsyscalls], *evsel; |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 478 | int sample_size = __perf_evsel__sample_size(attr.sample_type); |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 479 | |
| 480 | for (i = 0; i < nsyscalls; ++i) { |
| 481 | char name[64]; |
| 482 | |
| 483 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); |
| 484 | ids[i] = trace_event__id(name); |
| 485 | if (ids[i] < 0) { |
| 486 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); |
| 487 | return -1; |
| 488 | } |
| 489 | nr_events[i] = 0; |
| 490 | expected_nr_events[i] = random() % 257; |
| 491 | } |
| 492 | |
| 493 | threads = thread_map__new(-1, getpid()); |
| 494 | if (threads == NULL) { |
| 495 | pr_debug("thread_map__new\n"); |
| 496 | return -1; |
| 497 | } |
| 498 | |
| 499 | cpus = cpu_map__new(NULL); |
Han Pingtian | 54489c18 | 2011-01-25 07:39:00 +0800 | [diff] [blame] | 500 | if (cpus == NULL) { |
| 501 | pr_debug("cpu_map__new\n"); |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 502 | goto out_free_threads; |
| 503 | } |
| 504 | |
| 505 | CPU_ZERO(&cpu_set); |
| 506 | CPU_SET(cpus->map[0], &cpu_set); |
| 507 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); |
| 508 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { |
| 509 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
| 510 | cpus->map[0], strerror(errno)); |
| 511 | goto out_free_cpus; |
| 512 | } |
| 513 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 514 | evlist = perf_evlist__new(cpus, threads); |
Han Pingtian | 54489c18 | 2011-01-25 07:39:00 +0800 | [diff] [blame] | 515 | if (evlist == NULL) { |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 516 | pr_debug("perf_evlist__new\n"); |
| 517 | goto out_free_cpus; |
| 518 | } |
| 519 | |
| 520 | /* anonymous union fields, can't be initialized above */ |
| 521 | attr.wakeup_events = 1; |
| 522 | attr.sample_period = 1; |
| 523 | |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 524 | for (i = 0; i < nsyscalls; ++i) { |
| 525 | attr.config = ids[i]; |
| 526 | evsels[i] = perf_evsel__new(&attr, i); |
| 527 | if (evsels[i] == NULL) { |
| 528 | pr_debug("perf_evsel__new\n"); |
| 529 | goto out_free_evlist; |
| 530 | } |
| 531 | |
| 532 | perf_evlist__add(evlist, evsels[i]); |
| 533 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 534 | if (perf_evsel__open(evsels[i], cpus, threads, false, NULL) < 0) { |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 535 | pr_debug("failed to open counter: %s, " |
| 536 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", |
| 537 | strerror(errno)); |
| 538 | goto out_close_fd; |
| 539 | } |
| 540 | } |
| 541 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 542 | if (perf_evlist__mmap(evlist, 128, true) < 0) { |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 543 | pr_debug("failed to mmap events: %d (%s)\n", errno, |
| 544 | strerror(errno)); |
| 545 | goto out_close_fd; |
| 546 | } |
| 547 | |
| 548 | for (i = 0; i < nsyscalls; ++i) |
| 549 | for (j = 0; j < expected_nr_events[i]; ++j) { |
| 550 | int foo = syscalls[i](); |
| 551 | ++foo; |
| 552 | } |
| 553 | |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 554 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { |
Arnaldo Carvalho de Melo | 8d50e5b | 2011-01-29 13:02:00 -0200 | [diff] [blame] | 555 | struct perf_sample sample; |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 556 | |
| 557 | if (event->header.type != PERF_RECORD_SAMPLE) { |
| 558 | pr_debug("unexpected %s event\n", |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 559 | perf_event__name(event->header.type)); |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 560 | goto out_munmap; |
| 561 | } |
| 562 | |
Frederic Weisbecker | 5538bec | 2011-05-22 02:17:22 +0200 | [diff] [blame] | 563 | err = perf_event__parse_sample(event, attr.sample_type, sample_size, |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 564 | false, &sample, false); |
Frederic Weisbecker | 5538bec | 2011-05-22 02:17:22 +0200 | [diff] [blame] | 565 | if (err) { |
| 566 | pr_err("Can't parse sample, err = %d\n", err); |
| 567 | goto out_munmap; |
| 568 | } |
| 569 | |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 570 | evsel = perf_evlist__id2evsel(evlist, sample.id); |
| 571 | if (evsel == NULL) { |
| 572 | pr_debug("event with id %" PRIu64 |
| 573 | " doesn't map to an evsel\n", sample.id); |
| 574 | goto out_munmap; |
| 575 | } |
| 576 | nr_events[evsel->idx]++; |
| 577 | } |
| 578 | |
| 579 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 580 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { |
| 581 | pr_debug("expected %d %s events, got %d\n", |
| 582 | expected_nr_events[evsel->idx], |
| 583 | event_name(evsel), nr_events[evsel->idx]); |
| 584 | goto out_munmap; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | err = 0; |
| 589 | out_munmap: |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 590 | perf_evlist__munmap(evlist); |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 591 | out_close_fd: |
| 592 | for (i = 0; i < nsyscalls; ++i) |
| 593 | perf_evsel__close_fd(evsels[i], 1, threads->nr); |
| 594 | out_free_evlist: |
| 595 | perf_evlist__delete(evlist); |
| 596 | out_free_cpus: |
| 597 | cpu_map__delete(cpus); |
| 598 | out_free_threads: |
| 599 | thread_map__delete(threads); |
| 600 | return err; |
| 601 | #undef nsyscalls |
| 602 | } |
| 603 | |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 604 | #define TEST_ASSERT_VAL(text, cond) \ |
| 605 | do { \ |
Jiri Olsa | 65c1e04 | 2011-12-15 16:30:39 +0100 | [diff] [blame] | 606 | if (!(cond)) { \ |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 607 | pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \ |
| 608 | return -1; \ |
| 609 | } \ |
| 610 | } while (0) |
| 611 | |
| 612 | static int test__checkevent_tracepoint(struct perf_evlist *evlist) |
| 613 | { |
| 614 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 615 | struct perf_evsel, node); |
| 616 | |
| 617 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 618 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_TRACEPOINT == evsel->attr.type); |
| 619 | TEST_ASSERT_VAL("wrong sample_type", |
| 620 | (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU) == |
| 621 | evsel->attr.sample_type); |
| 622 | TEST_ASSERT_VAL("wrong sample_period", 1 == evsel->attr.sample_period); |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | static int test__checkevent_tracepoint_multi(struct perf_evlist *evlist) |
| 627 | { |
| 628 | struct perf_evsel *evsel; |
| 629 | |
| 630 | TEST_ASSERT_VAL("wrong number of entries", evlist->nr_entries > 1); |
| 631 | |
| 632 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 633 | TEST_ASSERT_VAL("wrong type", |
| 634 | PERF_TYPE_TRACEPOINT == evsel->attr.type); |
| 635 | TEST_ASSERT_VAL("wrong sample_type", |
| 636 | (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU) |
| 637 | == evsel->attr.sample_type); |
| 638 | TEST_ASSERT_VAL("wrong sample_period", |
| 639 | 1 == evsel->attr.sample_period); |
| 640 | } |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static int test__checkevent_raw(struct perf_evlist *evlist) |
| 645 | { |
| 646 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 647 | struct perf_evsel, node); |
| 648 | |
| 649 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 650 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->attr.type); |
| 651 | TEST_ASSERT_VAL("wrong config", 1 == evsel->attr.config); |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | static int test__checkevent_numeric(struct perf_evlist *evlist) |
| 656 | { |
| 657 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 658 | struct perf_evsel, node); |
| 659 | |
| 660 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 661 | TEST_ASSERT_VAL("wrong type", 1 == evsel->attr.type); |
| 662 | TEST_ASSERT_VAL("wrong config", 1 == evsel->attr.config); |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static int test__checkevent_symbolic_name(struct perf_evlist *evlist) |
| 667 | { |
| 668 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 669 | struct perf_evsel, node); |
| 670 | |
| 671 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 672 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->attr.type); |
| 673 | TEST_ASSERT_VAL("wrong config", |
| 674 | PERF_COUNT_HW_INSTRUCTIONS == evsel->attr.config); |
| 675 | return 0; |
| 676 | } |
| 677 | |
| 678 | static int test__checkevent_symbolic_alias(struct perf_evlist *evlist) |
| 679 | { |
| 680 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 681 | struct perf_evsel, node); |
| 682 | |
| 683 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 684 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->attr.type); |
| 685 | TEST_ASSERT_VAL("wrong config", |
| 686 | PERF_COUNT_SW_PAGE_FAULTS == evsel->attr.config); |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | static int test__checkevent_genhw(struct perf_evlist *evlist) |
| 691 | { |
| 692 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 693 | struct perf_evsel, node); |
| 694 | |
| 695 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 696 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_HW_CACHE == evsel->attr.type); |
| 697 | TEST_ASSERT_VAL("wrong config", (1 << 16) == evsel->attr.config); |
| 698 | return 0; |
| 699 | } |
| 700 | |
| 701 | static int test__checkevent_breakpoint(struct perf_evlist *evlist) |
| 702 | { |
| 703 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 704 | struct perf_evsel, node); |
| 705 | |
| 706 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 707 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); |
| 708 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); |
| 709 | TEST_ASSERT_VAL("wrong bp_type", (HW_BREAKPOINT_R | HW_BREAKPOINT_W) == |
| 710 | evsel->attr.bp_type); |
| 711 | TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_4 == |
| 712 | evsel->attr.bp_len); |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static int test__checkevent_breakpoint_x(struct perf_evlist *evlist) |
| 717 | { |
| 718 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 719 | struct perf_evsel, node); |
| 720 | |
| 721 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 722 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); |
| 723 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); |
| 724 | TEST_ASSERT_VAL("wrong bp_type", |
| 725 | HW_BREAKPOINT_X == evsel->attr.bp_type); |
| 726 | TEST_ASSERT_VAL("wrong bp_len", sizeof(long) == evsel->attr.bp_len); |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | static int test__checkevent_breakpoint_r(struct perf_evlist *evlist) |
| 731 | { |
| 732 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 733 | struct perf_evsel, node); |
| 734 | |
| 735 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 736 | TEST_ASSERT_VAL("wrong type", |
| 737 | PERF_TYPE_BREAKPOINT == evsel->attr.type); |
| 738 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); |
| 739 | TEST_ASSERT_VAL("wrong bp_type", |
| 740 | HW_BREAKPOINT_R == evsel->attr.bp_type); |
| 741 | TEST_ASSERT_VAL("wrong bp_len", |
| 742 | HW_BREAKPOINT_LEN_4 == evsel->attr.bp_len); |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static int test__checkevent_breakpoint_w(struct perf_evlist *evlist) |
| 747 | { |
| 748 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 749 | struct perf_evsel, node); |
| 750 | |
| 751 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); |
| 752 | TEST_ASSERT_VAL("wrong type", |
| 753 | PERF_TYPE_BREAKPOINT == evsel->attr.type); |
| 754 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); |
| 755 | TEST_ASSERT_VAL("wrong bp_type", |
| 756 | HW_BREAKPOINT_W == evsel->attr.bp_type); |
| 757 | TEST_ASSERT_VAL("wrong bp_len", |
| 758 | HW_BREAKPOINT_LEN_4 == evsel->attr.bp_len); |
| 759 | return 0; |
| 760 | } |
| 761 | |
Jiri Olsa | 65c1e04 | 2011-12-15 16:30:39 +0100 | [diff] [blame] | 762 | static int test__checkevent_tracepoint_modifier(struct perf_evlist *evlist) |
| 763 | { |
| 764 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 765 | struct perf_evsel, node); |
| 766 | |
| 767 | TEST_ASSERT_VAL("wrong exclude_user", evsel->attr.exclude_user); |
| 768 | TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->attr.exclude_kernel); |
| 769 | TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); |
| 770 | TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip); |
| 771 | |
| 772 | return test__checkevent_tracepoint(evlist); |
| 773 | } |
| 774 | |
| 775 | static int |
| 776 | test__checkevent_tracepoint_multi_modifier(struct perf_evlist *evlist) |
| 777 | { |
| 778 | struct perf_evsel *evsel; |
| 779 | |
| 780 | TEST_ASSERT_VAL("wrong number of entries", evlist->nr_entries > 1); |
| 781 | |
| 782 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 783 | TEST_ASSERT_VAL("wrong exclude_user", |
| 784 | !evsel->attr.exclude_user); |
| 785 | TEST_ASSERT_VAL("wrong exclude_kernel", |
| 786 | evsel->attr.exclude_kernel); |
| 787 | TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); |
| 788 | TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip); |
| 789 | } |
| 790 | |
| 791 | return test__checkevent_tracepoint_multi(evlist); |
| 792 | } |
| 793 | |
| 794 | static int test__checkevent_raw_modifier(struct perf_evlist *evlist) |
| 795 | { |
| 796 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 797 | struct perf_evsel, node); |
| 798 | |
| 799 | TEST_ASSERT_VAL("wrong exclude_user", evsel->attr.exclude_user); |
| 800 | TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->attr.exclude_kernel); |
| 801 | TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); |
| 802 | TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip); |
| 803 | |
| 804 | return test__checkevent_raw(evlist); |
| 805 | } |
| 806 | |
| 807 | static int test__checkevent_numeric_modifier(struct perf_evlist *evlist) |
| 808 | { |
| 809 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 810 | struct perf_evsel, node); |
| 811 | |
| 812 | TEST_ASSERT_VAL("wrong exclude_user", evsel->attr.exclude_user); |
| 813 | TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel); |
| 814 | TEST_ASSERT_VAL("wrong exclude_hv", !evsel->attr.exclude_hv); |
| 815 | TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip); |
| 816 | |
| 817 | return test__checkevent_numeric(evlist); |
| 818 | } |
| 819 | |
| 820 | static int test__checkevent_symbolic_name_modifier(struct perf_evlist *evlist) |
| 821 | { |
| 822 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 823 | struct perf_evsel, node); |
| 824 | |
| 825 | TEST_ASSERT_VAL("wrong exclude_user", evsel->attr.exclude_user); |
| 826 | TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel); |
| 827 | TEST_ASSERT_VAL("wrong exclude_hv", !evsel->attr.exclude_hv); |
| 828 | TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip); |
| 829 | |
| 830 | return test__checkevent_symbolic_name(evlist); |
| 831 | } |
| 832 | |
| 833 | static int test__checkevent_symbolic_alias_modifier(struct perf_evlist *evlist) |
| 834 | { |
| 835 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 836 | struct perf_evsel, node); |
| 837 | |
| 838 | TEST_ASSERT_VAL("wrong exclude_user", !evsel->attr.exclude_user); |
| 839 | TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel); |
| 840 | TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); |
| 841 | TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip); |
| 842 | |
| 843 | return test__checkevent_symbolic_alias(evlist); |
| 844 | } |
| 845 | |
| 846 | static int test__checkevent_genhw_modifier(struct perf_evlist *evlist) |
| 847 | { |
| 848 | struct perf_evsel *evsel = list_entry(evlist->entries.next, |
| 849 | struct perf_evsel, node); |
| 850 | |
| 851 | TEST_ASSERT_VAL("wrong exclude_user", evsel->attr.exclude_user); |
| 852 | TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->attr.exclude_kernel); |
| 853 | TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); |
| 854 | TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip); |
| 855 | |
| 856 | return test__checkevent_genhw(evlist); |
| 857 | } |
| 858 | |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 859 | static struct test__event_st { |
| 860 | const char *name; |
| 861 | __u32 type; |
| 862 | int (*check)(struct perf_evlist *evlist); |
| 863 | } test__events[] = { |
| 864 | { |
| 865 | .name = "syscalls:sys_enter_open", |
| 866 | .check = test__checkevent_tracepoint, |
| 867 | }, |
| 868 | { |
| 869 | .name = "syscalls:*", |
| 870 | .check = test__checkevent_tracepoint_multi, |
| 871 | }, |
| 872 | { |
| 873 | .name = "r1", |
| 874 | .check = test__checkevent_raw, |
| 875 | }, |
| 876 | { |
| 877 | .name = "1:1", |
| 878 | .check = test__checkevent_numeric, |
| 879 | }, |
| 880 | { |
| 881 | .name = "instructions", |
| 882 | .check = test__checkevent_symbolic_name, |
| 883 | }, |
| 884 | { |
| 885 | .name = "faults", |
| 886 | .check = test__checkevent_symbolic_alias, |
| 887 | }, |
| 888 | { |
| 889 | .name = "L1-dcache-load-miss", |
| 890 | .check = test__checkevent_genhw, |
| 891 | }, |
| 892 | { |
| 893 | .name = "mem:0", |
| 894 | .check = test__checkevent_breakpoint, |
| 895 | }, |
| 896 | { |
| 897 | .name = "mem:0:x", |
| 898 | .check = test__checkevent_breakpoint_x, |
| 899 | }, |
| 900 | { |
| 901 | .name = "mem:0:r", |
| 902 | .check = test__checkevent_breakpoint_r, |
| 903 | }, |
| 904 | { |
| 905 | .name = "mem:0:w", |
| 906 | .check = test__checkevent_breakpoint_w, |
| 907 | }, |
Jiri Olsa | 65c1e04 | 2011-12-15 16:30:39 +0100 | [diff] [blame] | 908 | { |
| 909 | .name = "syscalls:sys_enter_open:k", |
| 910 | .check = test__checkevent_tracepoint_modifier, |
| 911 | }, |
| 912 | { |
| 913 | .name = "syscalls:*:u", |
| 914 | .check = test__checkevent_tracepoint_multi_modifier, |
| 915 | }, |
| 916 | { |
| 917 | .name = "r1:kp", |
| 918 | .check = test__checkevent_raw_modifier, |
| 919 | }, |
| 920 | { |
| 921 | .name = "1:1:hp", |
| 922 | .check = test__checkevent_numeric_modifier, |
| 923 | }, |
| 924 | { |
| 925 | .name = "instructions:h", |
| 926 | .check = test__checkevent_symbolic_name_modifier, |
| 927 | }, |
| 928 | { |
| 929 | .name = "faults:u", |
| 930 | .check = test__checkevent_symbolic_alias_modifier, |
| 931 | }, |
| 932 | { |
| 933 | .name = "L1-dcache-load-miss:kp", |
| 934 | .check = test__checkevent_genhw_modifier, |
| 935 | }, |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 936 | }; |
| 937 | |
| 938 | #define TEST__EVENTS_CNT (sizeof(test__events) / sizeof(struct test__event_st)) |
| 939 | |
| 940 | static int test__parse_events(void) |
| 941 | { |
| 942 | struct perf_evlist *evlist; |
| 943 | u_int i; |
| 944 | int ret = 0; |
| 945 | |
| 946 | for (i = 0; i < TEST__EVENTS_CNT; i++) { |
| 947 | struct test__event_st *e = &test__events[i]; |
| 948 | |
| 949 | evlist = perf_evlist__new(NULL, NULL); |
| 950 | if (evlist == NULL) |
| 951 | break; |
| 952 | |
| 953 | ret = parse_events(evlist, e->name, 0); |
| 954 | if (ret) { |
| 955 | pr_debug("failed to parse event '%s', err %d\n", |
| 956 | e->name, ret); |
| 957 | break; |
| 958 | } |
| 959 | |
| 960 | ret = e->check(evlist); |
| 961 | if (ret) |
| 962 | break; |
| 963 | |
| 964 | perf_evlist__delete(evlist); |
| 965 | } |
| 966 | |
| 967 | return ret; |
| 968 | } |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 969 | |
| 970 | static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t **maskp, |
| 971 | size_t *sizep) |
| 972 | { |
| 973 | cpu_set_t *mask; |
| 974 | size_t size; |
| 975 | int i, cpu = -1, nrcpus = 1024; |
| 976 | realloc: |
| 977 | mask = CPU_ALLOC(nrcpus); |
| 978 | size = CPU_ALLOC_SIZE(nrcpus); |
| 979 | CPU_ZERO_S(size, mask); |
| 980 | |
| 981 | if (sched_getaffinity(pid, size, mask) == -1) { |
| 982 | CPU_FREE(mask); |
| 983 | if (errno == EINVAL && nrcpus < (1024 << 8)) { |
| 984 | nrcpus = nrcpus << 2; |
| 985 | goto realloc; |
| 986 | } |
| 987 | perror("sched_getaffinity"); |
| 988 | return -1; |
| 989 | } |
| 990 | |
| 991 | for (i = 0; i < nrcpus; i++) { |
| 992 | if (CPU_ISSET_S(i, size, mask)) { |
| 993 | if (cpu == -1) { |
| 994 | cpu = i; |
| 995 | *maskp = mask; |
| 996 | *sizep = size; |
| 997 | } else |
| 998 | CPU_CLR_S(i, size, mask); |
| 999 | } |
| 1000 | } |
| 1001 | |
| 1002 | if (cpu == -1) |
| 1003 | CPU_FREE(mask); |
| 1004 | |
| 1005 | return cpu; |
| 1006 | } |
| 1007 | |
| 1008 | static int test__PERF_RECORD(void) |
| 1009 | { |
| 1010 | struct perf_record_opts opts = { |
| 1011 | .target_pid = -1, |
| 1012 | .target_tid = -1, |
| 1013 | .no_delay = true, |
| 1014 | .freq = 10, |
| 1015 | .mmap_pages = 256, |
| 1016 | .sample_id_all_avail = true, |
| 1017 | }; |
| 1018 | cpu_set_t *cpu_mask = NULL; |
| 1019 | size_t cpu_mask_size = 0; |
| 1020 | struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); |
| 1021 | struct perf_evsel *evsel; |
| 1022 | struct perf_sample sample; |
| 1023 | const char *cmd = "sleep"; |
| 1024 | const char *argv[] = { cmd, "1", NULL, }; |
| 1025 | char *bname; |
| 1026 | u64 sample_type, prev_time = 0; |
| 1027 | bool found_cmd_mmap = false, |
| 1028 | found_libc_mmap = false, |
| 1029 | found_vdso_mmap = false, |
| 1030 | found_ld_mmap = false; |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1031 | int err = -1, errs = 0, i, wakeups = 0, sample_size; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1032 | u32 cpu; |
| 1033 | int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, }; |
| 1034 | |
| 1035 | if (evlist == NULL || argv == NULL) { |
| 1036 | pr_debug("Not enough memory to create evlist\n"); |
| 1037 | goto out; |
| 1038 | } |
| 1039 | |
| 1040 | /* |
| 1041 | * We need at least one evsel in the evlist, use the default |
| 1042 | * one: "cycles". |
| 1043 | */ |
| 1044 | err = perf_evlist__add_default(evlist); |
| 1045 | if (err < 0) { |
| 1046 | pr_debug("Not enough memory to create evsel\n"); |
| 1047 | goto out_delete_evlist; |
| 1048 | } |
| 1049 | |
| 1050 | /* |
| 1051 | * Create maps of threads and cpus to monitor. In this case |
| 1052 | * we start with all threads and cpus (-1, -1) but then in |
| 1053 | * perf_evlist__prepare_workload we'll fill in the only thread |
| 1054 | * we're monitoring, the one forked there. |
| 1055 | */ |
| 1056 | err = perf_evlist__create_maps(evlist, opts.target_pid, |
| 1057 | opts.target_tid, opts.cpu_list); |
| 1058 | if (err < 0) { |
| 1059 | pr_debug("Not enough memory to create thread/cpu maps\n"); |
| 1060 | goto out_delete_evlist; |
| 1061 | } |
| 1062 | |
| 1063 | /* |
| 1064 | * Prepare the workload in argv[] to run, it'll fork it, and then wait |
| 1065 | * for perf_evlist__start_workload() to exec it. This is done this way |
| 1066 | * so that we have time to open the evlist (calling sys_perf_event_open |
| 1067 | * on all the fds) and then mmap them. |
| 1068 | */ |
| 1069 | err = perf_evlist__prepare_workload(evlist, &opts, argv); |
| 1070 | if (err < 0) { |
| 1071 | pr_debug("Couldn't run the workload!\n"); |
| 1072 | goto out_delete_evlist; |
| 1073 | } |
| 1074 | |
| 1075 | /* |
| 1076 | * Config the evsels, setting attr->comm on the first one, etc. |
| 1077 | */ |
| 1078 | evsel = list_entry(evlist->entries.next, struct perf_evsel, node); |
| 1079 | evsel->attr.sample_type |= PERF_SAMPLE_CPU; |
| 1080 | evsel->attr.sample_type |= PERF_SAMPLE_TID; |
| 1081 | evsel->attr.sample_type |= PERF_SAMPLE_TIME; |
| 1082 | perf_evlist__config_attrs(evlist, &opts); |
| 1083 | |
| 1084 | err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask, |
| 1085 | &cpu_mask_size); |
| 1086 | if (err < 0) { |
| 1087 | pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno)); |
| 1088 | goto out_delete_evlist; |
| 1089 | } |
| 1090 | |
| 1091 | cpu = err; |
| 1092 | |
| 1093 | /* |
| 1094 | * So that we can check perf_sample.cpu on all the samples. |
| 1095 | */ |
| 1096 | if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, cpu_mask) < 0) { |
| 1097 | pr_debug("sched_setaffinity: %s\n", strerror(errno)); |
| 1098 | goto out_free_cpu_mask; |
| 1099 | } |
| 1100 | |
| 1101 | /* |
| 1102 | * Call sys_perf_event_open on all the fds on all the evsels, |
| 1103 | * grouping them if asked to. |
| 1104 | */ |
| 1105 | err = perf_evlist__open(evlist, opts.group); |
| 1106 | if (err < 0) { |
| 1107 | pr_debug("perf_evlist__open: %s\n", strerror(errno)); |
| 1108 | goto out_delete_evlist; |
| 1109 | } |
| 1110 | |
| 1111 | /* |
| 1112 | * mmap the first fd on a given CPU and ask for events for the other |
| 1113 | * fds in the same CPU to be injected in the same mmap ring buffer |
| 1114 | * (using ioctl(PERF_EVENT_IOC_SET_OUTPUT)). |
| 1115 | */ |
| 1116 | err = perf_evlist__mmap(evlist, opts.mmap_pages, false); |
| 1117 | if (err < 0) { |
| 1118 | pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); |
| 1119 | goto out_delete_evlist; |
| 1120 | } |
| 1121 | |
| 1122 | /* |
| 1123 | * We'll need these two to parse the PERF_SAMPLE_* fields in each |
| 1124 | * event. |
| 1125 | */ |
| 1126 | sample_type = perf_evlist__sample_type(evlist); |
| 1127 | sample_size = __perf_evsel__sample_size(sample_type); |
| 1128 | |
| 1129 | /* |
| 1130 | * Now that all is properly set up, enable the events, they will |
| 1131 | * count just on workload.pid, which will start... |
| 1132 | */ |
| 1133 | perf_evlist__enable(evlist); |
| 1134 | |
| 1135 | /* |
| 1136 | * Now! |
| 1137 | */ |
| 1138 | perf_evlist__start_workload(evlist); |
| 1139 | |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1140 | while (1) { |
| 1141 | int before = total_events; |
| 1142 | |
| 1143 | for (i = 0; i < evlist->nr_mmaps; i++) { |
| 1144 | union perf_event *event; |
| 1145 | |
| 1146 | while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { |
| 1147 | const u32 type = event->header.type; |
| 1148 | const char *name = perf_event__name(type); |
| 1149 | |
| 1150 | ++total_events; |
| 1151 | if (type < PERF_RECORD_MAX) |
| 1152 | nr_events[type]++; |
| 1153 | |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1154 | err = perf_event__parse_sample(event, sample_type, |
| 1155 | sample_size, true, |
| 1156 | &sample, false); |
| 1157 | if (err < 0) { |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1158 | if (verbose) |
| 1159 | perf_event__fprintf(event, stderr); |
| 1160 | pr_debug("Couldn't parse sample\n"); |
| 1161 | goto out_err; |
| 1162 | } |
| 1163 | |
| 1164 | if (verbose) { |
| 1165 | pr_info("%" PRIu64" %d ", sample.time, sample.cpu); |
| 1166 | perf_event__fprintf(event, stderr); |
| 1167 | } |
| 1168 | |
| 1169 | if (prev_time > sample.time) { |
| 1170 | pr_debug("%s going backwards in time, prev=%" PRIu64 ", curr=%" PRIu64 "\n", |
| 1171 | name, prev_time, sample.time); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1172 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | prev_time = sample.time; |
| 1176 | |
| 1177 | if (sample.cpu != cpu) { |
| 1178 | pr_debug("%s with unexpected cpu, expected %d, got %d\n", |
| 1179 | name, cpu, sample.cpu); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1180 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | if ((pid_t)sample.pid != evlist->workload.pid) { |
| 1184 | pr_debug("%s with unexpected pid, expected %d, got %d\n", |
| 1185 | name, evlist->workload.pid, sample.pid); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1186 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | if ((pid_t)sample.tid != evlist->workload.pid) { |
| 1190 | pr_debug("%s with unexpected tid, expected %d, got %d\n", |
| 1191 | name, evlist->workload.pid, sample.tid); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1192 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | if ((type == PERF_RECORD_COMM || |
| 1196 | type == PERF_RECORD_MMAP || |
| 1197 | type == PERF_RECORD_FORK || |
| 1198 | type == PERF_RECORD_EXIT) && |
| 1199 | (pid_t)event->comm.pid != evlist->workload.pid) { |
| 1200 | pr_debug("%s with unexpected pid/tid\n", name); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1201 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | if ((type == PERF_RECORD_COMM || |
| 1205 | type == PERF_RECORD_MMAP) && |
| 1206 | event->comm.pid != event->comm.tid) { |
| 1207 | pr_debug("%s with different pid/tid!\n", name); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1208 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1209 | } |
| 1210 | |
| 1211 | switch (type) { |
| 1212 | case PERF_RECORD_COMM: |
| 1213 | if (strcmp(event->comm.comm, cmd)) { |
| 1214 | pr_debug("%s with unexpected comm!\n", name); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1215 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1216 | } |
| 1217 | break; |
| 1218 | case PERF_RECORD_EXIT: |
| 1219 | goto found_exit; |
| 1220 | case PERF_RECORD_MMAP: |
| 1221 | bname = strrchr(event->mmap.filename, '/'); |
| 1222 | if (bname != NULL) { |
| 1223 | if (!found_cmd_mmap) |
| 1224 | found_cmd_mmap = !strcmp(bname + 1, cmd); |
| 1225 | if (!found_libc_mmap) |
| 1226 | found_libc_mmap = !strncmp(bname + 1, "libc", 4); |
| 1227 | if (!found_ld_mmap) |
| 1228 | found_ld_mmap = !strncmp(bname + 1, "ld", 2); |
| 1229 | } else if (!found_vdso_mmap) |
| 1230 | found_vdso_mmap = !strcmp(event->mmap.filename, "[vdso]"); |
| 1231 | break; |
| 1232 | |
| 1233 | case PERF_RECORD_SAMPLE: |
| 1234 | /* Just ignore samples for now */ |
| 1235 | break; |
| 1236 | default: |
| 1237 | pr_debug("Unexpected perf_event->header.type %d!\n", |
| 1238 | type); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1239 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1240 | } |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | /* |
| 1245 | * We don't use poll here because at least at 3.1 times the |
| 1246 | * PERF_RECORD_{!SAMPLE} events don't honour |
| 1247 | * perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does. |
| 1248 | */ |
| 1249 | if (total_events == before && false) |
| 1250 | poll(evlist->pollfd, evlist->nr_fds, -1); |
| 1251 | |
| 1252 | sleep(1); |
| 1253 | if (++wakeups > 5) { |
| 1254 | pr_debug("No PERF_RECORD_EXIT event!\n"); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1255 | break; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | found_exit: |
| 1260 | if (nr_events[PERF_RECORD_COMM] > 1) { |
| 1261 | pr_debug("Excessive number of PERF_RECORD_COMM events!\n"); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1262 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | if (nr_events[PERF_RECORD_COMM] == 0) { |
| 1266 | pr_debug("Missing PERF_RECORD_COMM for %s!\n", cmd); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1267 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | if (!found_cmd_mmap) { |
| 1271 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", cmd); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1272 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1273 | } |
| 1274 | |
| 1275 | if (!found_libc_mmap) { |
| 1276 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "libc"); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1277 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1278 | } |
| 1279 | |
| 1280 | if (!found_ld_mmap) { |
| 1281 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "ld"); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1282 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1283 | } |
| 1284 | |
| 1285 | if (!found_vdso_mmap) { |
| 1286 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "[vdso]"); |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1287 | ++errs; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1288 | } |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1289 | out_err: |
| 1290 | perf_evlist__munmap(evlist); |
| 1291 | out_free_cpu_mask: |
| 1292 | CPU_FREE(cpu_mask); |
| 1293 | out_delete_evlist: |
| 1294 | perf_evlist__delete(evlist); |
| 1295 | out: |
Arnaldo Carvalho de Melo | f71c49e | 2011-12-02 13:53:04 -0200 | [diff] [blame] | 1296 | return (err < 0 || errs > 0) ? -1 : 0; |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1297 | } |
| 1298 | |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1299 | static struct test { |
| 1300 | const char *desc; |
| 1301 | int (*func)(void); |
| 1302 | } tests[] = { |
| 1303 | { |
| 1304 | .desc = "vmlinux symtab matches kallsyms", |
| 1305 | .func = test__vmlinux_matches_kallsyms, |
| 1306 | }, |
| 1307 | { |
Arnaldo Carvalho de Melo | d854861 | 2011-01-04 00:16:20 -0200 | [diff] [blame] | 1308 | .desc = "detect open syscall event", |
| 1309 | .func = test__open_syscall_event, |
| 1310 | }, |
| 1311 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 1312 | .desc = "detect open syscall event on all cpus", |
| 1313 | .func = test__open_syscall_event_on_all_cpus, |
| 1314 | }, |
| 1315 | { |
Arnaldo Carvalho de Melo | de5fa3a | 2011-01-15 10:42:46 -0200 | [diff] [blame] | 1316 | .desc = "read samples using the mmap interface", |
| 1317 | .func = test__basic_mmap, |
| 1318 | }, |
| 1319 | { |
Jiri Olsa | 13b6256 | 2011-07-14 11:25:33 +0200 | [diff] [blame] | 1320 | .desc = "parse events tests", |
| 1321 | .func = test__parse_events, |
| 1322 | }, |
| 1323 | { |
Arnaldo Carvalho de Melo | 3e7c439 | 2011-12-02 11:13:50 -0200 | [diff] [blame] | 1324 | .desc = "Validate PERF_RECORD_* events & perf_sample fields", |
| 1325 | .func = test__PERF_RECORD, |
| 1326 | }, |
| 1327 | { |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1328 | .func = NULL, |
| 1329 | }, |
| 1330 | }; |
| 1331 | |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1332 | static bool perf_test__matches(int curr, int argc, const char *argv[]) |
| 1333 | { |
| 1334 | int i; |
| 1335 | |
| 1336 | if (argc == 0) |
| 1337 | return true; |
| 1338 | |
| 1339 | for (i = 0; i < argc; ++i) { |
| 1340 | char *end; |
| 1341 | long nr = strtoul(argv[i], &end, 10); |
| 1342 | |
| 1343 | if (*end == '\0') { |
| 1344 | if (nr == curr + 1) |
| 1345 | return true; |
| 1346 | continue; |
| 1347 | } |
| 1348 | |
| 1349 | if (strstr(tests[curr].desc, argv[i])) |
| 1350 | return true; |
| 1351 | } |
| 1352 | |
| 1353 | return false; |
| 1354 | } |
| 1355 | |
| 1356 | static int __cmd_test(int argc, const char *argv[]) |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1357 | { |
| 1358 | int i = 0; |
| 1359 | |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1360 | while (tests[i].func) { |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1361 | int curr = i++, err; |
| 1362 | |
| 1363 | if (!perf_test__matches(curr, argc, argv)) |
| 1364 | continue; |
| 1365 | |
| 1366 | pr_info("%2d: %s:", i, tests[curr].desc); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1367 | pr_debug("\n--- start ---\n"); |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1368 | err = tests[curr].func(); |
| 1369 | pr_debug("---- end ----\n%s:", tests[curr].desc); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1370 | pr_info(" %s\n", err ? "FAILED!\n" : "Ok"); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | return 0; |
| 1374 | } |
| 1375 | |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1376 | static int perf_test__list(int argc, const char **argv) |
| 1377 | { |
| 1378 | int i = 0; |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1379 | |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1380 | while (tests[i].func) { |
| 1381 | int curr = i++; |
| 1382 | |
| 1383 | if (argc > 1 && !strstr(tests[curr].desc, argv[1])) |
| 1384 | continue; |
| 1385 | |
| 1386 | pr_info("%2d: %s\n", i, tests[curr].desc); |
| 1387 | } |
| 1388 | |
| 1389 | return 0; |
| 1390 | } |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1391 | |
| 1392 | int cmd_test(int argc, const char **argv, const char *prefix __used) |
| 1393 | { |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1394 | const char * const test_usage[] = { |
| 1395 | "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", |
| 1396 | NULL, |
| 1397 | }; |
| 1398 | const struct option test_options[] = { |
| 1399 | OPT_INTEGER('v', "verbose", &verbose, |
| 1400 | "be more verbose (show symbol address, etc)"), |
| 1401 | OPT_END() |
| 1402 | }; |
| 1403 | |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1404 | argc = parse_options(argc, argv, test_options, test_usage, 0); |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1405 | if (argc >= 1 && !strcmp(argv[0], "list")) |
| 1406 | return perf_test__list(argc, argv); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1407 | |
| 1408 | symbol_conf.priv_size = sizeof(int); |
| 1409 | symbol_conf.sort_by_name = true; |
| 1410 | symbol_conf.try_vmlinux_path = true; |
| 1411 | |
| 1412 | if (symbol__init() < 0) |
| 1413 | return -1; |
| 1414 | |
| 1415 | setup_pager(); |
| 1416 | |
Arnaldo Carvalho de Melo | e60770a | 2011-11-29 12:52:07 -0200 | [diff] [blame] | 1417 | return __cmd_test(argc, argv); |
Arnaldo Carvalho de Melo | 1c6a800 | 2010-04-29 18:58:32 -0300 | [diff] [blame] | 1418 | } |