Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| 3 | * |
| 4 | * Parts came from builtin-{top,stat,record}.c, see those files for further |
| 5 | * copyright notes. |
| 6 | * |
| 7 | * Released under the GPL v2. (and only v2, not any later version) |
| 8 | */ |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 9 | #include <poll.h> |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 10 | #include "cpumap.h" |
| 11 | #include "thread_map.h" |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 12 | #include "evlist.h" |
| 13 | #include "evsel.h" |
| 14 | #include "util.h" |
| 15 | |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 16 | #include <sys/mman.h> |
| 17 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 18 | #include <linux/bitops.h> |
| 19 | #include <linux/hash.h> |
| 20 | |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 21 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 22 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 23 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 24 | void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, |
| 25 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 26 | { |
| 27 | int i; |
| 28 | |
| 29 | for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i) |
| 30 | INIT_HLIST_HEAD(&evlist->heads[i]); |
| 31 | INIT_LIST_HEAD(&evlist->entries); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 32 | perf_evlist__set_maps(evlist, cpus, threads); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 33 | } |
| 34 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 35 | struct perf_evlist *perf_evlist__new(struct cpu_map *cpus, |
| 36 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 37 | { |
| 38 | struct perf_evlist *evlist = zalloc(sizeof(*evlist)); |
| 39 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 40 | if (evlist != NULL) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 41 | perf_evlist__init(evlist, cpus, threads); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 42 | |
| 43 | return evlist; |
| 44 | } |
| 45 | |
| 46 | static void perf_evlist__purge(struct perf_evlist *evlist) |
| 47 | { |
| 48 | struct perf_evsel *pos, *n; |
| 49 | |
| 50 | list_for_each_entry_safe(pos, n, &evlist->entries, node) { |
| 51 | list_del_init(&pos->node); |
| 52 | perf_evsel__delete(pos); |
| 53 | } |
| 54 | |
| 55 | evlist->nr_entries = 0; |
| 56 | } |
| 57 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 58 | void perf_evlist__exit(struct perf_evlist *evlist) |
| 59 | { |
| 60 | free(evlist->mmap); |
| 61 | free(evlist->pollfd); |
| 62 | evlist->mmap = NULL; |
| 63 | evlist->pollfd = NULL; |
| 64 | } |
| 65 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 66 | void perf_evlist__delete(struct perf_evlist *evlist) |
| 67 | { |
| 68 | perf_evlist__purge(evlist); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 69 | perf_evlist__exit(evlist); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 70 | free(evlist); |
| 71 | } |
| 72 | |
| 73 | void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry) |
| 74 | { |
| 75 | list_add_tail(&entry->node, &evlist->entries); |
| 76 | ++evlist->nr_entries; |
| 77 | } |
| 78 | |
| 79 | int perf_evlist__add_default(struct perf_evlist *evlist) |
| 80 | { |
| 81 | struct perf_event_attr attr = { |
| 82 | .type = PERF_TYPE_HARDWARE, |
| 83 | .config = PERF_COUNT_HW_CPU_CYCLES, |
| 84 | }; |
| 85 | struct perf_evsel *evsel = perf_evsel__new(&attr, 0); |
| 86 | |
| 87 | if (evsel == NULL) |
| 88 | return -ENOMEM; |
| 89 | |
| 90 | perf_evlist__add(evlist, evsel); |
| 91 | return 0; |
| 92 | } |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 93 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 94 | int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 95 | { |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 96 | int nfds = evlist->cpus->nr * evlist->threads->nr * evlist->nr_entries; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 97 | evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); |
| 98 | return evlist->pollfd != NULL ? 0 : -ENOMEM; |
| 99 | } |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 100 | |
| 101 | void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) |
| 102 | { |
| 103 | fcntl(fd, F_SETFL, O_NONBLOCK); |
| 104 | evlist->pollfd[evlist->nr_fds].fd = fd; |
| 105 | evlist->pollfd[evlist->nr_fds].events = POLLIN; |
| 106 | evlist->nr_fds++; |
| 107 | } |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 108 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 109 | static void perf_evlist__id_hash(struct perf_evlist *evlist, |
| 110 | struct perf_evsel *evsel, |
| 111 | int cpu, int thread, u64 id) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 112 | { |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 113 | int hash; |
| 114 | struct perf_sample_id *sid = SID(evsel, cpu, thread); |
| 115 | |
| 116 | sid->id = id; |
| 117 | sid->evsel = evsel; |
| 118 | hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS); |
| 119 | hlist_add_head(&sid->node, &evlist->heads[hash]); |
| 120 | } |
| 121 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 122 | void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, |
| 123 | int cpu, int thread, u64 id) |
| 124 | { |
| 125 | perf_evlist__id_hash(evlist, evsel, cpu, thread, id); |
| 126 | evsel->id[evsel->ids++] = id; |
| 127 | } |
| 128 | |
| 129 | static int perf_evlist__id_add_fd(struct perf_evlist *evlist, |
| 130 | struct perf_evsel *evsel, |
| 131 | int cpu, int thread, int fd) |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 132 | { |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 133 | u64 read_data[4] = { 0, }; |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 134 | int id_idx = 1; /* The first entry is the counter value */ |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 135 | |
| 136 | if (!(evsel->attr.read_format & PERF_FORMAT_ID) || |
| 137 | read(fd, &read_data, sizeof(read_data)) == -1) |
| 138 | return -1; |
| 139 | |
| 140 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) |
| 141 | ++id_idx; |
| 142 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) |
| 143 | ++id_idx; |
| 144 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 145 | perf_evlist__id_add(evlist, evsel, cpu, thread, read_data[id_idx]); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 146 | return 0; |
| 147 | } |
| 148 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 149 | struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id) |
| 150 | { |
| 151 | struct hlist_head *head; |
| 152 | struct hlist_node *pos; |
| 153 | struct perf_sample_id *sid; |
| 154 | int hash; |
| 155 | |
| 156 | if (evlist->nr_entries == 1) |
| 157 | return list_entry(evlist->entries.next, struct perf_evsel, node); |
| 158 | |
| 159 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); |
| 160 | head = &evlist->heads[hash]; |
| 161 | |
| 162 | hlist_for_each_entry(sid, pos, head, node) |
| 163 | if (sid->id == id) |
| 164 | return sid->evsel; |
| 165 | return NULL; |
| 166 | } |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 167 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 168 | union perf_event *perf_evlist__read_on_cpu(struct perf_evlist *evlist, int cpu) |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 169 | { |
| 170 | /* XXX Move this to perf.c, making it generally available */ |
| 171 | unsigned int page_size = sysconf(_SC_PAGE_SIZE); |
| 172 | struct perf_mmap *md = &evlist->mmap[cpu]; |
| 173 | unsigned int head = perf_mmap__read_head(md); |
| 174 | unsigned int old = md->prev; |
| 175 | unsigned char *data = md->base + page_size; |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 176 | union perf_event *event = NULL; |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 177 | |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 178 | if (evlist->overwrite) { |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 179 | /* |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 180 | * If we're further behind than half the buffer, there's a chance |
| 181 | * the writer will bite our tail and mess up the samples under us. |
| 182 | * |
| 183 | * If we somehow ended up ahead of the head, we got messed up. |
| 184 | * |
| 185 | * In either case, truncate and restart at head. |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 186 | */ |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 187 | int diff = head - old; |
| 188 | if (diff > md->mask / 2 || diff < 0) { |
| 189 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
| 190 | |
| 191 | /* |
| 192 | * head points to a known good entry, start there. |
| 193 | */ |
| 194 | old = head; |
| 195 | } |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | if (old != head) { |
| 199 | size_t size; |
| 200 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 201 | event = (union perf_event *)&data[old & md->mask]; |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 202 | size = event->header.size; |
| 203 | |
| 204 | /* |
| 205 | * Event straddles the mmap boundary -- header should always |
| 206 | * be inside due to u64 alignment of output. |
| 207 | */ |
| 208 | if ((old & md->mask) + size != ((old + size) & md->mask)) { |
| 209 | unsigned int offset = old; |
| 210 | unsigned int len = min(sizeof(*event), size), cpy; |
| 211 | void *dst = &evlist->event_copy; |
| 212 | |
| 213 | do { |
| 214 | cpy = min(md->mask + 1 - (offset & md->mask), len); |
| 215 | memcpy(dst, &data[offset & md->mask], cpy); |
| 216 | offset += cpy; |
| 217 | dst += cpy; |
| 218 | len -= cpy; |
| 219 | } while (len); |
| 220 | |
| 221 | event = &evlist->event_copy; |
| 222 | } |
| 223 | |
| 224 | old += size; |
| 225 | } |
| 226 | |
| 227 | md->prev = old; |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 228 | |
| 229 | if (!evlist->overwrite) |
| 230 | perf_mmap__write_tail(md, old); |
| 231 | |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 232 | return event; |
| 233 | } |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 234 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 235 | void perf_evlist__munmap(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 236 | { |
| 237 | int cpu; |
| 238 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 239 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 240 | if (evlist->mmap[cpu].base != NULL) { |
| 241 | munmap(evlist->mmap[cpu].base, evlist->mmap_len); |
| 242 | evlist->mmap[cpu].base = NULL; |
| 243 | } |
| 244 | } |
| 245 | } |
| 246 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 247 | int perf_evlist__alloc_mmap(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 248 | { |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 249 | evlist->mmap = zalloc(evlist->cpus->nr * sizeof(struct perf_mmap)); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 250 | return evlist->mmap != NULL ? 0 : -ENOMEM; |
| 251 | } |
| 252 | |
| 253 | static int __perf_evlist__mmap(struct perf_evlist *evlist, int cpu, int prot, |
| 254 | int mask, int fd) |
| 255 | { |
| 256 | evlist->mmap[cpu].prev = 0; |
| 257 | evlist->mmap[cpu].mask = mask; |
| 258 | evlist->mmap[cpu].base = mmap(NULL, evlist->mmap_len, prot, |
| 259 | MAP_SHARED, fd, 0); |
| 260 | if (evlist->mmap[cpu].base == MAP_FAILED) |
| 261 | return -1; |
| 262 | |
| 263 | perf_evlist__add_pollfd(evlist, fd); |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | /** perf_evlist__mmap - Create per cpu maps to receive events |
| 268 | * |
| 269 | * @evlist - list of events |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 270 | * @pages - map length in pages |
| 271 | * @overwrite - overwrite older events? |
| 272 | * |
| 273 | * If overwrite is false the user needs to signal event consuption using: |
| 274 | * |
| 275 | * struct perf_mmap *m = &evlist->mmap[cpu]; |
| 276 | * unsigned int head = perf_mmap__read_head(m); |
| 277 | * |
| 278 | * perf_mmap__write_tail(m, head) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 279 | * |
| 280 | * Using perf_evlist__read_on_cpu does this automatically. |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 281 | */ |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 282 | int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 283 | { |
| 284 | unsigned int page_size = sysconf(_SC_PAGE_SIZE); |
| 285 | int mask = pages * page_size - 1, cpu; |
| 286 | struct perf_evsel *first_evsel, *evsel; |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 287 | const struct cpu_map *cpus = evlist->cpus; |
| 288 | const struct thread_map *threads = evlist->threads; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 289 | int thread, prot = PROT_READ | (overwrite ? 0 : PROT_WRITE); |
| 290 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 291 | if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 292 | return -ENOMEM; |
| 293 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 294 | if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 295 | return -ENOMEM; |
| 296 | |
| 297 | evlist->overwrite = overwrite; |
| 298 | evlist->mmap_len = (pages + 1) * page_size; |
| 299 | first_evsel = list_entry(evlist->entries.next, struct perf_evsel, node); |
| 300 | |
| 301 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 302 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 303 | evsel->sample_id == NULL && |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 304 | perf_evsel__alloc_id(evsel, cpus->nr, threads->nr) < 0) |
| 305 | return -ENOMEM; |
| 306 | |
| 307 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
| 308 | for (thread = 0; thread < threads->nr; thread++) { |
| 309 | int fd = FD(evsel, cpu, thread); |
| 310 | |
| 311 | if (evsel->idx || thread) { |
| 312 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, |
| 313 | FD(first_evsel, cpu, 0)) != 0) |
| 314 | goto out_unmap; |
| 315 | } else if (__perf_evlist__mmap(evlist, cpu, prot, mask, fd) < 0) |
| 316 | goto out_unmap; |
| 317 | |
| 318 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 319 | perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 320 | goto out_unmap; |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | return 0; |
| 326 | |
| 327 | out_unmap: |
| 328 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
| 329 | if (evlist->mmap[cpu].base != NULL) { |
| 330 | munmap(evlist->mmap[cpu].base, evlist->mmap_len); |
| 331 | evlist->mmap[cpu].base = NULL; |
| 332 | } |
| 333 | } |
| 334 | return -1; |
| 335 | } |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 336 | |
| 337 | int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid, |
| 338 | pid_t target_tid, const char *cpu_list) |
| 339 | { |
| 340 | evlist->threads = thread_map__new(target_pid, target_tid); |
| 341 | |
| 342 | if (evlist->threads == NULL) |
| 343 | return -1; |
| 344 | |
| 345 | if (target_tid != -1) |
| 346 | evlist->cpus = cpu_map__dummy_new(); |
| 347 | else |
| 348 | evlist->cpus = cpu_map__new(cpu_list); |
| 349 | |
| 350 | if (evlist->cpus == NULL) |
| 351 | goto out_delete_threads; |
| 352 | |
| 353 | return 0; |
| 354 | |
| 355 | out_delete_threads: |
| 356 | thread_map__delete(evlist->threads); |
| 357 | return -1; |
| 358 | } |
| 359 | |
| 360 | void perf_evlist__delete_maps(struct perf_evlist *evlist) |
| 361 | { |
| 362 | cpu_map__delete(evlist->cpus); |
| 363 | thread_map__delete(evlist->threads); |
| 364 | evlist->cpus = NULL; |
| 365 | evlist->threads = NULL; |
| 366 | } |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 367 | |
| 368 | int perf_evlist__set_filters(struct perf_evlist *evlist) |
| 369 | { |
| 370 | const struct thread_map *threads = evlist->threads; |
| 371 | const struct cpu_map *cpus = evlist->cpus; |
| 372 | struct perf_evsel *evsel; |
| 373 | char *filter; |
| 374 | int thread; |
| 375 | int cpu; |
| 376 | int err; |
| 377 | int fd; |
| 378 | |
| 379 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 380 | filter = evsel->filter; |
| 381 | if (!filter) |
| 382 | continue; |
| 383 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
| 384 | for (thread = 0; thread < threads->nr; thread++) { |
| 385 | fd = FD(evsel, cpu, thread); |
| 386 | err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter); |
| 387 | if (err) |
| 388 | return err; |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | return 0; |
| 394 | } |