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 | */ |
| 9 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 10 | #include <byteswap.h> |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 11 | #include <linux/bitops.h> |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 12 | #include "asm/bug.h" |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 13 | #include "debugfs.h" |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 14 | #include "event-parse.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 15 | #include "evsel.h" |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 16 | #include "evlist.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 17 | #include "util.h" |
Arnaldo Carvalho de Melo | 86bd5e8 | 2011-01-03 23:09:46 -0200 | [diff] [blame] | 18 | #include "cpumap.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 19 | #include "thread_map.h" |
Namhyung Kim | 12864b3 | 2012-04-26 14:15:22 +0900 | [diff] [blame] | 20 | #include "target.h" |
David Howells | d2709c7 | 2012-11-19 22:21:03 +0000 | [diff] [blame] | 21 | #include <linux/hw_breakpoint.h> |
| 22 | #include <linux/perf_event.h> |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 23 | #include "perf_regs.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 24 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 25 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
| 26 | |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 27 | static int __perf_evsel__sample_size(u64 sample_type) |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 28 | { |
| 29 | u64 mask = sample_type & PERF_SAMPLE_MASK; |
| 30 | int size = 0; |
| 31 | int i; |
| 32 | |
| 33 | for (i = 0; i < 64; i++) { |
| 34 | if (mask & (1ULL << i)) |
| 35 | size++; |
| 36 | } |
| 37 | |
| 38 | size *= sizeof(u64); |
| 39 | |
| 40 | return size; |
| 41 | } |
| 42 | |
Jiri Olsa | 4bf9ce1 | 2012-03-22 14:37:26 +0100 | [diff] [blame] | 43 | void hists__init(struct hists *hists) |
Arnaldo Carvalho de Melo | 0e2a5f1 | 2011-11-04 08:16:58 -0200 | [diff] [blame] | 44 | { |
| 45 | memset(hists, 0, sizeof(*hists)); |
| 46 | hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT; |
| 47 | hists->entries_in = &hists->entries_in_array[0]; |
| 48 | hists->entries_collapsed = RB_ROOT; |
| 49 | hists->entries = RB_ROOT; |
| 50 | pthread_mutex_init(&hists->lock, NULL); |
| 51 | } |
| 52 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 53 | void perf_evsel__init(struct perf_evsel *evsel, |
| 54 | struct perf_event_attr *attr, int idx) |
| 55 | { |
| 56 | evsel->idx = idx; |
| 57 | evsel->attr = *attr; |
Namhyung Kim | 2cfda56 | 2012-11-29 15:38:29 +0900 | [diff] [blame^] | 58 | evsel->leader = evsel; |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 59 | INIT_LIST_HEAD(&evsel->node); |
Arnaldo Carvalho de Melo | 1980c2eb | 2011-10-05 17:50:23 -0300 | [diff] [blame] | 60 | hists__init(&evsel->hists); |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 61 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 62 | } |
| 63 | |
Lin Ming | 23a2f3a | 2011-01-07 11:11:09 +0800 | [diff] [blame] | 64 | struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 65 | { |
| 66 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); |
| 67 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 68 | if (evsel != NULL) |
| 69 | perf_evsel__init(evsel, attr, idx); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 70 | |
| 71 | return evsel; |
| 72 | } |
| 73 | |
Arnaldo Carvalho de Melo | 201b733 | 2012-09-26 20:24:19 -0300 | [diff] [blame] | 74 | struct event_format *event_format__new(const char *sys, const char *name) |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 75 | { |
| 76 | int fd, n; |
| 77 | char *filename; |
| 78 | void *bf = NULL, *nbf; |
| 79 | size_t size = 0, alloc_size = 0; |
| 80 | struct event_format *format = NULL; |
| 81 | |
| 82 | if (asprintf(&filename, "%s/%s/%s/format", tracing_events_path, sys, name) < 0) |
| 83 | goto out; |
| 84 | |
| 85 | fd = open(filename, O_RDONLY); |
| 86 | if (fd < 0) |
| 87 | goto out_free_filename; |
| 88 | |
| 89 | do { |
| 90 | if (size == alloc_size) { |
| 91 | alloc_size += BUFSIZ; |
| 92 | nbf = realloc(bf, alloc_size); |
| 93 | if (nbf == NULL) |
| 94 | goto out_free_bf; |
| 95 | bf = nbf; |
| 96 | } |
| 97 | |
| 98 | n = read(fd, bf + size, BUFSIZ); |
| 99 | if (n < 0) |
| 100 | goto out_free_bf; |
| 101 | size += n; |
| 102 | } while (n > 0); |
| 103 | |
| 104 | pevent_parse_format(&format, bf, size, sys); |
| 105 | |
| 106 | out_free_bf: |
| 107 | free(bf); |
| 108 | close(fd); |
| 109 | out_free_filename: |
| 110 | free(filename); |
| 111 | out: |
| 112 | return format; |
| 113 | } |
| 114 | |
| 115 | struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx) |
| 116 | { |
| 117 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); |
| 118 | |
| 119 | if (evsel != NULL) { |
| 120 | struct perf_event_attr attr = { |
Arnaldo Carvalho de Melo | 0b80f8b3 | 2012-09-26 12:28:26 -0300 | [diff] [blame] | 121 | .type = PERF_TYPE_TRACEPOINT, |
| 122 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | |
| 123 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 124 | }; |
| 125 | |
Arnaldo Carvalho de Melo | e48ffe2 | 2012-09-26 17:11:38 -0300 | [diff] [blame] | 126 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
| 127 | goto out_free; |
| 128 | |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 129 | evsel->tp_format = event_format__new(sys, name); |
| 130 | if (evsel->tp_format == NULL) |
| 131 | goto out_free; |
| 132 | |
Arnaldo Carvalho de Melo | 0b80f8b3 | 2012-09-26 12:28:26 -0300 | [diff] [blame] | 133 | event_attr_init(&attr); |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 134 | attr.config = evsel->tp_format->id; |
Arnaldo Carvalho de Melo | 0b80f8b3 | 2012-09-26 12:28:26 -0300 | [diff] [blame] | 135 | attr.sample_period = 1; |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 136 | perf_evsel__init(evsel, &attr, idx); |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | return evsel; |
| 140 | |
| 141 | out_free: |
Arnaldo Carvalho de Melo | e48ffe2 | 2012-09-26 17:11:38 -0300 | [diff] [blame] | 142 | free(evsel->name); |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 143 | free(evsel); |
| 144 | return NULL; |
| 145 | } |
| 146 | |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 147 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 148 | "cycles", |
| 149 | "instructions", |
| 150 | "cache-references", |
| 151 | "cache-misses", |
| 152 | "branches", |
| 153 | "branch-misses", |
| 154 | "bus-cycles", |
| 155 | "stalled-cycles-frontend", |
| 156 | "stalled-cycles-backend", |
| 157 | "ref-cycles", |
| 158 | }; |
| 159 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 160 | static const char *__perf_evsel__hw_name(u64 config) |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 161 | { |
| 162 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) |
| 163 | return perf_evsel__hw_names[config]; |
| 164 | |
| 165 | return "unknown-hardware"; |
| 166 | } |
| 167 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 168 | static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 169 | { |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 170 | int colon = 0, r = 0; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 171 | struct perf_event_attr *attr = &evsel->attr; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 172 | bool exclude_guest_default = false; |
| 173 | |
| 174 | #define MOD_PRINT(context, mod) do { \ |
| 175 | if (!attr->exclude_##context) { \ |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 176 | if (!colon) colon = ++r; \ |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 177 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
| 178 | } } while(0) |
| 179 | |
| 180 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { |
| 181 | MOD_PRINT(kernel, 'k'); |
| 182 | MOD_PRINT(user, 'u'); |
| 183 | MOD_PRINT(hv, 'h'); |
| 184 | exclude_guest_default = true; |
| 185 | } |
| 186 | |
| 187 | if (attr->precise_ip) { |
| 188 | if (!colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 189 | colon = ++r; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 190 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
| 191 | exclude_guest_default = true; |
| 192 | } |
| 193 | |
| 194 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { |
| 195 | MOD_PRINT(host, 'H'); |
| 196 | MOD_PRINT(guest, 'G'); |
| 197 | } |
| 198 | #undef MOD_PRINT |
| 199 | if (colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 200 | bf[colon - 1] = ':'; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 201 | return r; |
| 202 | } |
| 203 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 204 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 205 | { |
| 206 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); |
| 207 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 208 | } |
| 209 | |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 210 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 211 | "cpu-clock", |
| 212 | "task-clock", |
| 213 | "page-faults", |
| 214 | "context-switches", |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 215 | "cpu-migrations", |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 216 | "minor-faults", |
| 217 | "major-faults", |
| 218 | "alignment-faults", |
| 219 | "emulation-faults", |
| 220 | }; |
| 221 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 222 | static const char *__perf_evsel__sw_name(u64 config) |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 223 | { |
| 224 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) |
| 225 | return perf_evsel__sw_names[config]; |
| 226 | return "unknown-software"; |
| 227 | } |
| 228 | |
| 229 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 230 | { |
| 231 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); |
| 232 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 233 | } |
| 234 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 235 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
| 236 | { |
| 237 | int r; |
| 238 | |
| 239 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); |
| 240 | |
| 241 | if (type & HW_BREAKPOINT_R) |
| 242 | r += scnprintf(bf + r, size - r, "r"); |
| 243 | |
| 244 | if (type & HW_BREAKPOINT_W) |
| 245 | r += scnprintf(bf + r, size - r, "w"); |
| 246 | |
| 247 | if (type & HW_BREAKPOINT_X) |
| 248 | r += scnprintf(bf + r, size - r, "x"); |
| 249 | |
| 250 | return r; |
| 251 | } |
| 252 | |
| 253 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 254 | { |
| 255 | struct perf_event_attr *attr = &evsel->attr; |
| 256 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); |
| 257 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 258 | } |
| 259 | |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 260 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
| 261 | [PERF_EVSEL__MAX_ALIASES] = { |
| 262 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
| 263 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, |
| 264 | { "LLC", "L2", }, |
| 265 | { "dTLB", "d-tlb", "Data-TLB", }, |
| 266 | { "iTLB", "i-tlb", "Instruction-TLB", }, |
| 267 | { "branch", "branches", "bpu", "btb", "bpc", }, |
| 268 | { "node", }, |
| 269 | }; |
| 270 | |
| 271 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] |
| 272 | [PERF_EVSEL__MAX_ALIASES] = { |
| 273 | { "load", "loads", "read", }, |
| 274 | { "store", "stores", "write", }, |
| 275 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, |
| 276 | }; |
| 277 | |
| 278 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] |
| 279 | [PERF_EVSEL__MAX_ALIASES] = { |
| 280 | { "refs", "Reference", "ops", "access", }, |
| 281 | { "misses", "miss", }, |
| 282 | }; |
| 283 | |
| 284 | #define C(x) PERF_COUNT_HW_CACHE_##x |
| 285 | #define CACHE_READ (1 << C(OP_READ)) |
| 286 | #define CACHE_WRITE (1 << C(OP_WRITE)) |
| 287 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) |
| 288 | #define COP(x) (1 << x) |
| 289 | |
| 290 | /* |
| 291 | * cache operartion stat |
| 292 | * L1I : Read and prefetch only |
| 293 | * ITLB and BPU : Read-only |
| 294 | */ |
| 295 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { |
| 296 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 297 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), |
| 298 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 299 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 300 | [C(ITLB)] = (CACHE_READ), |
| 301 | [C(BPU)] = (CACHE_READ), |
| 302 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 303 | }; |
| 304 | |
| 305 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) |
| 306 | { |
| 307 | if (perf_evsel__hw_cache_stat[type] & COP(op)) |
| 308 | return true; /* valid */ |
| 309 | else |
| 310 | return false; /* invalid */ |
| 311 | } |
| 312 | |
| 313 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, |
| 314 | char *bf, size_t size) |
| 315 | { |
| 316 | if (result) { |
| 317 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], |
| 318 | perf_evsel__hw_cache_op[op][0], |
| 319 | perf_evsel__hw_cache_result[result][0]); |
| 320 | } |
| 321 | |
| 322 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], |
| 323 | perf_evsel__hw_cache_op[op][1]); |
| 324 | } |
| 325 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 326 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 327 | { |
| 328 | u8 op, result, type = (config >> 0) & 0xff; |
| 329 | const char *err = "unknown-ext-hardware-cache-type"; |
| 330 | |
| 331 | if (type > PERF_COUNT_HW_CACHE_MAX) |
| 332 | goto out_err; |
| 333 | |
| 334 | op = (config >> 8) & 0xff; |
| 335 | err = "unknown-ext-hardware-cache-op"; |
| 336 | if (op > PERF_COUNT_HW_CACHE_OP_MAX) |
| 337 | goto out_err; |
| 338 | |
| 339 | result = (config >> 16) & 0xff; |
| 340 | err = "unknown-ext-hardware-cache-result"; |
| 341 | if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
| 342 | goto out_err; |
| 343 | |
| 344 | err = "invalid-cache"; |
| 345 | if (!perf_evsel__is_cache_op_valid(type, op)) |
| 346 | goto out_err; |
| 347 | |
| 348 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); |
| 349 | out_err: |
| 350 | return scnprintf(bf, size, "%s", err); |
| 351 | } |
| 352 | |
| 353 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 354 | { |
| 355 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); |
| 356 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 357 | } |
| 358 | |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 359 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 360 | { |
| 361 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); |
| 362 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 363 | } |
| 364 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 365 | const char *perf_evsel__name(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 366 | { |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 367 | char bf[128]; |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 368 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 369 | if (evsel->name) |
| 370 | return evsel->name; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 371 | |
| 372 | switch (evsel->attr.type) { |
| 373 | case PERF_TYPE_RAW: |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 374 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 375 | break; |
| 376 | |
| 377 | case PERF_TYPE_HARDWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 378 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 379 | break; |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 380 | |
| 381 | case PERF_TYPE_HW_CACHE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 382 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 383 | break; |
| 384 | |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 385 | case PERF_TYPE_SOFTWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 386 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 387 | break; |
| 388 | |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 389 | case PERF_TYPE_TRACEPOINT: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 390 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 391 | break; |
| 392 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 393 | case PERF_TYPE_BREAKPOINT: |
| 394 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); |
| 395 | break; |
| 396 | |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 397 | default: |
Robert Richter | ca1b145 | 2012-08-16 21:10:18 +0200 | [diff] [blame] | 398 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
| 399 | evsel->attr.type); |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 400 | break; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 401 | } |
| 402 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 403 | evsel->name = strdup(bf); |
| 404 | |
| 405 | return evsel->name ?: "unknown"; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 406 | } |
| 407 | |
Jiri Olsa | 774cb49 | 2012-11-12 18:34:01 +0100 | [diff] [blame] | 408 | /* |
| 409 | * The enable_on_exec/disabled value strategy: |
| 410 | * |
| 411 | * 1) For any type of traced program: |
| 412 | * - all independent events and group leaders are disabled |
| 413 | * - all group members are enabled |
| 414 | * |
| 415 | * Group members are ruled by group leaders. They need to |
| 416 | * be enabled, because the group scheduling relies on that. |
| 417 | * |
| 418 | * 2) For traced programs executed by perf: |
| 419 | * - all independent events and group leaders have |
| 420 | * enable_on_exec set |
| 421 | * - we don't specifically enable or disable any event during |
| 422 | * the record command |
| 423 | * |
| 424 | * Independent events and group leaders are initially disabled |
| 425 | * and get enabled by exec. Group members are ruled by group |
| 426 | * leaders as stated in 1). |
| 427 | * |
| 428 | * 3) For traced programs attached by perf (pid/tid): |
| 429 | * - we specifically enable or disable all events during |
| 430 | * the record command |
| 431 | * |
| 432 | * When attaching events to already running traced we |
| 433 | * enable/disable events specifically, as there's no |
| 434 | * initial traced exec call. |
| 435 | */ |
Jiri Olsa | cac2142 | 2012-11-12 18:34:00 +0100 | [diff] [blame] | 436 | void perf_evsel__config(struct perf_evsel *evsel, |
| 437 | struct perf_record_opts *opts) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 438 | { |
| 439 | struct perf_event_attr *attr = &evsel->attr; |
| 440 | int track = !evsel->idx; /* only the first counter needs these */ |
| 441 | |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 442 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 443 | attr->inherit = !opts->no_inherit; |
| 444 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
| 445 | PERF_FORMAT_TOTAL_TIME_RUNNING | |
| 446 | PERF_FORMAT_ID; |
| 447 | |
| 448 | attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
| 449 | |
| 450 | /* |
| 451 | * We default some events to a 1 default interval. But keep |
| 452 | * it a weak assumption overridable by the user. |
| 453 | */ |
| 454 | if (!attr->sample_period || (opts->user_freq != UINT_MAX && |
| 455 | opts->user_interval != ULLONG_MAX)) { |
| 456 | if (opts->freq) { |
| 457 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
| 458 | attr->freq = 1; |
| 459 | attr->sample_freq = opts->freq; |
| 460 | } else { |
| 461 | attr->sample_period = opts->default_interval; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | if (opts->no_samples) |
| 466 | attr->sample_freq = 0; |
| 467 | |
| 468 | if (opts->inherit_stat) |
| 469 | attr->inherit_stat = 1; |
| 470 | |
| 471 | if (opts->sample_address) { |
| 472 | attr->sample_type |= PERF_SAMPLE_ADDR; |
| 473 | attr->mmap_data = track; |
| 474 | } |
| 475 | |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 476 | if (opts->call_graph) { |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 477 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; |
| 478 | |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 479 | if (opts->call_graph == CALLCHAIN_DWARF) { |
| 480 | attr->sample_type |= PERF_SAMPLE_REGS_USER | |
| 481 | PERF_SAMPLE_STACK_USER; |
| 482 | attr->sample_regs_user = PERF_REGS_MASK; |
| 483 | attr->sample_stack_user = opts->stack_dump_size; |
| 484 | attr->exclude_callchain_user = 1; |
| 485 | } |
| 486 | } |
| 487 | |
Namhyung Kim | e40ee74 | 2012-05-21 10:42:07 +0900 | [diff] [blame] | 488 | if (perf_target__has_cpu(&opts->target)) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 489 | attr->sample_type |= PERF_SAMPLE_CPU; |
| 490 | |
Andrew Vagin | 3e76ac7 | 2011-12-20 17:32:45 +0300 | [diff] [blame] | 491 | if (opts->period) |
| 492 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
| 493 | |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 494 | if (!opts->sample_id_all_missing && |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 495 | (opts->sample_time || !opts->no_inherit || |
Namhyung Kim | aa22dd4 | 2012-05-16 18:45:47 +0900 | [diff] [blame] | 496 | perf_target__has_cpu(&opts->target))) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 497 | attr->sample_type |= PERF_SAMPLE_TIME; |
| 498 | |
| 499 | if (opts->raw_samples) { |
| 500 | attr->sample_type |= PERF_SAMPLE_TIME; |
| 501 | attr->sample_type |= PERF_SAMPLE_RAW; |
| 502 | attr->sample_type |= PERF_SAMPLE_CPU; |
| 503 | } |
| 504 | |
| 505 | if (opts->no_delay) { |
| 506 | attr->watermark = 0; |
| 507 | attr->wakeup_events = 1; |
| 508 | } |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 509 | if (opts->branch_stack) { |
| 510 | attr->sample_type |= PERF_SAMPLE_BRANCH_STACK; |
| 511 | attr->branch_sample_type = opts->branch_stack; |
| 512 | } |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 513 | |
| 514 | attr->mmap = track; |
| 515 | attr->comm = track; |
| 516 | |
Jiri Olsa | 774cb49 | 2012-11-12 18:34:01 +0100 | [diff] [blame] | 517 | /* |
| 518 | * XXX see the function comment above |
| 519 | * |
| 520 | * Disabling only independent events or group leaders, |
| 521 | * keeping group members enabled. |
| 522 | */ |
Arnaldo Carvalho de Melo | 07ac002 | 2012-11-13 17:27:28 -0300 | [diff] [blame] | 523 | if (!perf_evsel__is_group_member(evsel)) |
Jiri Olsa | 774cb49 | 2012-11-12 18:34:01 +0100 | [diff] [blame] | 524 | attr->disabled = 1; |
| 525 | |
| 526 | /* |
| 527 | * Setting enable_on_exec for independent events and |
| 528 | * group leaders for traced executed by perf. |
| 529 | */ |
Arnaldo Carvalho de Melo | 07ac002 | 2012-11-13 17:27:28 -0300 | [diff] [blame] | 530 | if (perf_target__none(&opts->target) && !perf_evsel__is_group_member(evsel)) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 531 | attr->enable_on_exec = 1; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 532 | } |
| 533 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 534 | int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 535 | { |
David Ahern | 4af4c95 | 2011-05-27 09:58:34 -0600 | [diff] [blame] | 536 | int cpu, thread; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 537 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
David Ahern | 4af4c95 | 2011-05-27 09:58:34 -0600 | [diff] [blame] | 538 | |
| 539 | if (evsel->fd) { |
| 540 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 541 | for (thread = 0; thread < nthreads; thread++) { |
| 542 | FD(evsel, cpu, thread) = -1; |
| 543 | } |
| 544 | } |
| 545 | } |
| 546 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 547 | return evsel->fd != NULL ? 0 : -ENOMEM; |
| 548 | } |
| 549 | |
Arnaldo Carvalho de Melo | 745cefc | 2012-09-26 15:07:39 -0300 | [diff] [blame] | 550 | int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, |
| 551 | const char *filter) |
| 552 | { |
| 553 | int cpu, thread; |
| 554 | |
| 555 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 556 | for (thread = 0; thread < nthreads; thread++) { |
| 557 | int fd = FD(evsel, cpu, thread), |
| 558 | err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter); |
| 559 | |
| 560 | if (err) |
| 561 | return err; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 568 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 569 | { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 570 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
| 571 | if (evsel->sample_id == NULL) |
| 572 | return -ENOMEM; |
| 573 | |
| 574 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); |
| 575 | if (evsel->id == NULL) { |
| 576 | xyarray__delete(evsel->sample_id); |
| 577 | evsel->sample_id = NULL; |
| 578 | return -ENOMEM; |
| 579 | } |
| 580 | |
| 581 | return 0; |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 582 | } |
| 583 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 584 | int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus) |
| 585 | { |
| 586 | evsel->counts = zalloc((sizeof(*evsel->counts) + |
| 587 | (ncpus * sizeof(struct perf_counts_values)))); |
| 588 | return evsel->counts != NULL ? 0 : -ENOMEM; |
| 589 | } |
| 590 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 591 | void perf_evsel__free_fd(struct perf_evsel *evsel) |
| 592 | { |
| 593 | xyarray__delete(evsel->fd); |
| 594 | evsel->fd = NULL; |
| 595 | } |
| 596 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 597 | void perf_evsel__free_id(struct perf_evsel *evsel) |
| 598 | { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 599 | xyarray__delete(evsel->sample_id); |
| 600 | evsel->sample_id = NULL; |
| 601 | free(evsel->id); |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 602 | evsel->id = NULL; |
| 603 | } |
| 604 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 605 | void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 606 | { |
| 607 | int cpu, thread; |
| 608 | |
| 609 | for (cpu = 0; cpu < ncpus; cpu++) |
| 610 | for (thread = 0; thread < nthreads; ++thread) { |
| 611 | close(FD(evsel, cpu, thread)); |
| 612 | FD(evsel, cpu, thread) = -1; |
| 613 | } |
| 614 | } |
| 615 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 616 | void perf_evsel__exit(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 617 | { |
| 618 | assert(list_empty(&evsel->node)); |
| 619 | xyarray__delete(evsel->fd); |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 620 | xyarray__delete(evsel->sample_id); |
| 621 | free(evsel->id); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | void perf_evsel__delete(struct perf_evsel *evsel) |
| 625 | { |
| 626 | perf_evsel__exit(evsel); |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 627 | close_cgroup(evsel->cgrp); |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 628 | free(evsel->group_name); |
Arnaldo Carvalho de Melo | e48ffe2 | 2012-09-26 17:11:38 -0300 | [diff] [blame] | 629 | if (evsel->tp_format) |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 630 | pevent_free_format(evsel->tp_format); |
Stephane Eranian | f0c55bc | 2011-02-16 15:10:01 +0200 | [diff] [blame] | 631 | free(evsel->name); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 632 | free(evsel); |
| 633 | } |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 634 | |
| 635 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
| 636 | int cpu, int thread, bool scale) |
| 637 | { |
| 638 | struct perf_counts_values count; |
| 639 | size_t nv = scale ? 3 : 1; |
| 640 | |
| 641 | if (FD(evsel, cpu, thread) < 0) |
| 642 | return -EINVAL; |
| 643 | |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 644 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0) |
| 645 | return -ENOMEM; |
| 646 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 647 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
| 648 | return -errno; |
| 649 | |
| 650 | if (scale) { |
| 651 | if (count.run == 0) |
| 652 | count.val = 0; |
| 653 | else if (count.run < count.ena) |
| 654 | count.val = (u64)((double)count.val * count.ena / count.run + 0.5); |
| 655 | } else |
| 656 | count.ena = count.run = 0; |
| 657 | |
| 658 | evsel->counts->cpu[cpu] = count; |
| 659 | return 0; |
| 660 | } |
| 661 | |
| 662 | int __perf_evsel__read(struct perf_evsel *evsel, |
| 663 | int ncpus, int nthreads, bool scale) |
| 664 | { |
| 665 | size_t nv = scale ? 3 : 1; |
| 666 | int cpu, thread; |
| 667 | struct perf_counts_values *aggr = &evsel->counts->aggr, count; |
| 668 | |
Arnaldo Carvalho de Melo | 52bcd994 | 2011-02-03 17:26:06 -0200 | [diff] [blame] | 669 | aggr->val = aggr->ena = aggr->run = 0; |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 670 | |
| 671 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 672 | for (thread = 0; thread < nthreads; thread++) { |
| 673 | if (FD(evsel, cpu, thread) < 0) |
| 674 | continue; |
| 675 | |
| 676 | if (readn(FD(evsel, cpu, thread), |
| 677 | &count, nv * sizeof(u64)) < 0) |
| 678 | return -errno; |
| 679 | |
| 680 | aggr->val += count.val; |
| 681 | if (scale) { |
| 682 | aggr->ena += count.ena; |
| 683 | aggr->run += count.run; |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | evsel->counts->scaled = 0; |
| 689 | if (scale) { |
| 690 | if (aggr->run == 0) { |
| 691 | evsel->counts->scaled = -1; |
| 692 | aggr->val = 0; |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | if (aggr->run < aggr->ena) { |
| 697 | evsel->counts->scaled = 1; |
| 698 | aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5); |
| 699 | } |
| 700 | } else |
| 701 | aggr->ena = aggr->run = 0; |
| 702 | |
| 703 | return 0; |
| 704 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 705 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 706 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
| 707 | { |
| 708 | struct perf_evsel *leader = evsel->leader; |
| 709 | int fd; |
| 710 | |
Arnaldo Carvalho de Melo | 07ac002 | 2012-11-13 17:27:28 -0300 | [diff] [blame] | 711 | if (!perf_evsel__is_group_member(evsel)) |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 712 | return -1; |
| 713 | |
| 714 | /* |
| 715 | * Leader must be already processed/open, |
| 716 | * if not it's a bug. |
| 717 | */ |
| 718 | BUG_ON(!leader->fd); |
| 719 | |
| 720 | fd = FD(leader, cpu, thread); |
| 721 | BUG_ON(fd == -1); |
| 722 | |
| 723 | return fd; |
| 724 | } |
| 725 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 726 | static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 727 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 728 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 729 | int cpu, thread; |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 730 | unsigned long flags = 0; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 731 | int pid = -1, err; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 732 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 733 | if (evsel->fd == NULL && |
| 734 | perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 735 | return -ENOMEM; |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 736 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 737 | if (evsel->cgrp) { |
| 738 | flags = PERF_FLAG_PID_CGROUP; |
| 739 | pid = evsel->cgrp->fd; |
| 740 | } |
| 741 | |
Arnaldo Carvalho de Melo | 86bd5e8 | 2011-01-03 23:09:46 -0200 | [diff] [blame] | 742 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | 9d04f17 | 2011-01-12 00:08:18 -0200 | [diff] [blame] | 743 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 744 | for (thread = 0; thread < threads->nr; thread++) { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 745 | int group_fd; |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 746 | |
| 747 | if (!evsel->cgrp) |
| 748 | pid = threads->map[thread]; |
| 749 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 750 | group_fd = get_group_fd(evsel, cpu, thread); |
| 751 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 752 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 753 | pid, |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 754 | cpus->map[cpu], |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 755 | group_fd, flags); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 756 | if (FD(evsel, cpu, thread) < 0) { |
| 757 | err = -errno; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 758 | goto out_close; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 759 | } |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 760 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | return 0; |
| 764 | |
| 765 | out_close: |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 766 | do { |
| 767 | while (--thread >= 0) { |
| 768 | close(FD(evsel, cpu, thread)); |
| 769 | FD(evsel, cpu, thread) = -1; |
| 770 | } |
| 771 | thread = threads->nr; |
| 772 | } while (--cpu >= 0); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 773 | return err; |
| 774 | } |
| 775 | |
| 776 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 777 | { |
| 778 | if (evsel->fd == NULL) |
| 779 | return; |
| 780 | |
| 781 | perf_evsel__close_fd(evsel, ncpus, nthreads); |
| 782 | perf_evsel__free_fd(evsel); |
| 783 | evsel->fd = NULL; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 784 | } |
| 785 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 786 | static struct { |
| 787 | struct cpu_map map; |
| 788 | int cpus[1]; |
| 789 | } empty_cpu_map = { |
| 790 | .map.nr = 1, |
| 791 | .cpus = { -1, }, |
| 792 | }; |
| 793 | |
| 794 | static struct { |
| 795 | struct thread_map map; |
| 796 | int threads[1]; |
| 797 | } empty_thread_map = { |
| 798 | .map.nr = 1, |
| 799 | .threads = { -1, }, |
| 800 | }; |
| 801 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 802 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 803 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 804 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 805 | if (cpus == NULL) { |
| 806 | /* Work around old compiler warnings about strict aliasing */ |
| 807 | cpus = &empty_cpu_map.map; |
| 808 | } |
| 809 | |
| 810 | if (threads == NULL) |
| 811 | threads = &empty_thread_map.map; |
| 812 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 813 | return __perf_evsel__open(evsel, cpus, threads); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 814 | } |
| 815 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 816 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 817 | struct cpu_map *cpus) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 818 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 819 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 820 | } |
| 821 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 822 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 823 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 824 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 825 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads); |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 826 | } |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 827 | |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 828 | static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, |
| 829 | const union perf_event *event, |
| 830 | struct perf_sample *sample) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 831 | { |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 832 | u64 type = evsel->attr.sample_type; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 833 | const u64 *array = event->sample.array; |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 834 | bool swapped = evsel->needs_swap; |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 835 | union u64_swap u; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 836 | |
| 837 | array += ((event->header.size - |
| 838 | sizeof(event->header)) / sizeof(u64)) - 1; |
| 839 | |
| 840 | if (type & PERF_SAMPLE_CPU) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 841 | u.val64 = *array; |
| 842 | if (swapped) { |
| 843 | /* undo swap of u64, then swap on individual u32s */ |
| 844 | u.val64 = bswap_64(u.val64); |
| 845 | u.val32[0] = bswap_32(u.val32[0]); |
| 846 | } |
| 847 | |
| 848 | sample->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 849 | array--; |
| 850 | } |
| 851 | |
| 852 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 853 | sample->stream_id = *array; |
| 854 | array--; |
| 855 | } |
| 856 | |
| 857 | if (type & PERF_SAMPLE_ID) { |
| 858 | sample->id = *array; |
| 859 | array--; |
| 860 | } |
| 861 | |
| 862 | if (type & PERF_SAMPLE_TIME) { |
| 863 | sample->time = *array; |
| 864 | array--; |
| 865 | } |
| 866 | |
| 867 | if (type & PERF_SAMPLE_TID) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 868 | u.val64 = *array; |
| 869 | if (swapped) { |
| 870 | /* undo swap of u64, then swap on individual u32s */ |
| 871 | u.val64 = bswap_64(u.val64); |
| 872 | u.val32[0] = bswap_32(u.val32[0]); |
| 873 | u.val32[1] = bswap_32(u.val32[1]); |
| 874 | } |
| 875 | |
| 876 | sample->pid = u.val32[0]; |
| 877 | sample->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 878 | } |
| 879 | |
| 880 | return 0; |
| 881 | } |
| 882 | |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 883 | static bool sample_overlap(const union perf_event *event, |
| 884 | const void *offset, u64 size) |
| 885 | { |
| 886 | const void *base = event; |
| 887 | |
| 888 | if (offset + size > base + event->header.size) |
| 889 | return true; |
| 890 | |
| 891 | return false; |
| 892 | } |
| 893 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 894 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 895 | struct perf_sample *data) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 896 | { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 897 | u64 type = evsel->attr.sample_type; |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 898 | u64 regs_user = evsel->attr.sample_regs_user; |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 899 | bool swapped = evsel->needs_swap; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 900 | const u64 *array; |
| 901 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 902 | /* |
| 903 | * used for cross-endian analysis. See git commit 65014ab3 |
| 904 | * for why this goofiness is needed. |
| 905 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 906 | union u64_swap u; |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 907 | |
Robert Richter | f3bda2c | 2011-12-15 17:32:39 +0100 | [diff] [blame] | 908 | memset(data, 0, sizeof(*data)); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 909 | data->cpu = data->pid = data->tid = -1; |
| 910 | data->stream_id = data->id = data->time = -1ULL; |
Naveen N. Rao | a4a03fc | 2012-02-03 22:31:13 +0530 | [diff] [blame] | 911 | data->period = 1; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 912 | |
| 913 | if (event->header.type != PERF_RECORD_SAMPLE) { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 914 | if (!evsel->attr.sample_id_all) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 915 | return 0; |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 916 | return perf_evsel__parse_id_sample(evsel, event, data); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | array = event->sample.array; |
| 920 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 921 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
Frederic Weisbecker | a285412 | 2011-05-21 19:33:04 +0200 | [diff] [blame] | 922 | return -EFAULT; |
| 923 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 924 | if (type & PERF_SAMPLE_IP) { |
| 925 | data->ip = event->ip.ip; |
| 926 | array++; |
| 927 | } |
| 928 | |
| 929 | if (type & PERF_SAMPLE_TID) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 930 | u.val64 = *array; |
| 931 | if (swapped) { |
| 932 | /* undo swap of u64, then swap on individual u32s */ |
| 933 | u.val64 = bswap_64(u.val64); |
| 934 | u.val32[0] = bswap_32(u.val32[0]); |
| 935 | u.val32[1] = bswap_32(u.val32[1]); |
| 936 | } |
| 937 | |
| 938 | data->pid = u.val32[0]; |
| 939 | data->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 940 | array++; |
| 941 | } |
| 942 | |
| 943 | if (type & PERF_SAMPLE_TIME) { |
| 944 | data->time = *array; |
| 945 | array++; |
| 946 | } |
| 947 | |
David Ahern | 7cec092 | 2011-05-30 13:08:23 -0600 | [diff] [blame] | 948 | data->addr = 0; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 949 | if (type & PERF_SAMPLE_ADDR) { |
| 950 | data->addr = *array; |
| 951 | array++; |
| 952 | } |
| 953 | |
| 954 | data->id = -1ULL; |
| 955 | if (type & PERF_SAMPLE_ID) { |
| 956 | data->id = *array; |
| 957 | array++; |
| 958 | } |
| 959 | |
| 960 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 961 | data->stream_id = *array; |
| 962 | array++; |
| 963 | } |
| 964 | |
| 965 | if (type & PERF_SAMPLE_CPU) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 966 | |
| 967 | u.val64 = *array; |
| 968 | if (swapped) { |
| 969 | /* undo swap of u64, then swap on individual u32s */ |
| 970 | u.val64 = bswap_64(u.val64); |
| 971 | u.val32[0] = bswap_32(u.val32[0]); |
| 972 | } |
| 973 | |
| 974 | data->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 975 | array++; |
| 976 | } |
| 977 | |
| 978 | if (type & PERF_SAMPLE_PERIOD) { |
| 979 | data->period = *array; |
| 980 | array++; |
| 981 | } |
| 982 | |
| 983 | if (type & PERF_SAMPLE_READ) { |
Masanari Iida | f9d3699 | 2012-01-25 15:20:40 +0100 | [diff] [blame] | 984 | fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n"); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 985 | return -1; |
| 986 | } |
| 987 | |
| 988 | if (type & PERF_SAMPLE_CALLCHAIN) { |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 989 | if (sample_overlap(event, array, sizeof(data->callchain->nr))) |
| 990 | return -EFAULT; |
| 991 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 992 | data->callchain = (struct ip_callchain *)array; |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 993 | |
| 994 | if (sample_overlap(event, array, data->callchain->nr)) |
| 995 | return -EFAULT; |
| 996 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 997 | array += 1 + data->callchain->nr; |
| 998 | } |
| 999 | |
| 1000 | if (type & PERF_SAMPLE_RAW) { |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 1001 | const u64 *pdata; |
| 1002 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 1003 | u.val64 = *array; |
| 1004 | if (WARN_ONCE(swapped, |
| 1005 | "Endianness of raw data not corrected!\n")) { |
| 1006 | /* undo swap of u64, then swap on individual u32s */ |
| 1007 | u.val64 = bswap_64(u.val64); |
| 1008 | u.val32[0] = bswap_32(u.val32[0]); |
| 1009 | u.val32[1] = bswap_32(u.val32[1]); |
| 1010 | } |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 1011 | |
| 1012 | if (sample_overlap(event, array, sizeof(u32))) |
| 1013 | return -EFAULT; |
| 1014 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 1015 | data->raw_size = u.val32[0]; |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 1016 | pdata = (void *) array + sizeof(u32); |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 1017 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 1018 | if (sample_overlap(event, pdata, data->raw_size)) |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 1019 | return -EFAULT; |
| 1020 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 1021 | data->raw_data = (void *) pdata; |
Stephane Eranian | fa30c96 | 2012-03-17 23:23:18 +0100 | [diff] [blame] | 1022 | |
| 1023 | array = (void *)array + data->raw_size + sizeof(u32); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 1024 | } |
| 1025 | |
Roberto Agostino Vitillo | b538752 | 2012-02-09 23:21:01 +0100 | [diff] [blame] | 1026 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
| 1027 | u64 sz; |
| 1028 | |
| 1029 | data->branch_stack = (struct branch_stack *)array; |
| 1030 | array++; /* nr */ |
| 1031 | |
| 1032 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
| 1033 | sz /= sizeof(u64); |
| 1034 | array += sz; |
| 1035 | } |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 1036 | |
| 1037 | if (type & PERF_SAMPLE_REGS_USER) { |
| 1038 | /* First u64 tells us if we have any regs in sample. */ |
| 1039 | u64 avail = *array++; |
| 1040 | |
| 1041 | if (avail) { |
| 1042 | data->user_regs.regs = (u64 *)array; |
| 1043 | array += hweight_long(regs_user); |
| 1044 | } |
| 1045 | } |
| 1046 | |
| 1047 | if (type & PERF_SAMPLE_STACK_USER) { |
| 1048 | u64 size = *array++; |
| 1049 | |
| 1050 | data->user_stack.offset = ((char *)(array - 1) |
| 1051 | - (char *) event); |
| 1052 | |
| 1053 | if (!size) { |
| 1054 | data->user_stack.size = 0; |
| 1055 | } else { |
| 1056 | data->user_stack.data = (char *)array; |
| 1057 | array += size / sizeof(*array); |
| 1058 | data->user_stack.size = *array; |
| 1059 | } |
| 1060 | } |
| 1061 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 1062 | return 0; |
| 1063 | } |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 1064 | |
| 1065 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
| 1066 | const struct perf_sample *sample, |
| 1067 | bool swapped) |
| 1068 | { |
| 1069 | u64 *array; |
| 1070 | |
| 1071 | /* |
| 1072 | * used for cross-endian analysis. See git commit 65014ab3 |
| 1073 | * for why this goofiness is needed. |
| 1074 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 1075 | union u64_swap u; |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 1076 | |
| 1077 | array = event->sample.array; |
| 1078 | |
| 1079 | if (type & PERF_SAMPLE_IP) { |
| 1080 | event->ip.ip = sample->ip; |
| 1081 | array++; |
| 1082 | } |
| 1083 | |
| 1084 | if (type & PERF_SAMPLE_TID) { |
| 1085 | u.val32[0] = sample->pid; |
| 1086 | u.val32[1] = sample->tid; |
| 1087 | if (swapped) { |
| 1088 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 1089 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 1090 | */ |
| 1091 | u.val32[0] = bswap_32(u.val32[0]); |
| 1092 | u.val32[1] = bswap_32(u.val32[1]); |
| 1093 | u.val64 = bswap_64(u.val64); |
| 1094 | } |
| 1095 | |
| 1096 | *array = u.val64; |
| 1097 | array++; |
| 1098 | } |
| 1099 | |
| 1100 | if (type & PERF_SAMPLE_TIME) { |
| 1101 | *array = sample->time; |
| 1102 | array++; |
| 1103 | } |
| 1104 | |
| 1105 | if (type & PERF_SAMPLE_ADDR) { |
| 1106 | *array = sample->addr; |
| 1107 | array++; |
| 1108 | } |
| 1109 | |
| 1110 | if (type & PERF_SAMPLE_ID) { |
| 1111 | *array = sample->id; |
| 1112 | array++; |
| 1113 | } |
| 1114 | |
| 1115 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 1116 | *array = sample->stream_id; |
| 1117 | array++; |
| 1118 | } |
| 1119 | |
| 1120 | if (type & PERF_SAMPLE_CPU) { |
| 1121 | u.val32[0] = sample->cpu; |
| 1122 | if (swapped) { |
| 1123 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 1124 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 1125 | */ |
| 1126 | u.val32[0] = bswap_32(u.val32[0]); |
| 1127 | u.val64 = bswap_64(u.val64); |
| 1128 | } |
| 1129 | *array = u.val64; |
| 1130 | array++; |
| 1131 | } |
| 1132 | |
| 1133 | if (type & PERF_SAMPLE_PERIOD) { |
| 1134 | *array = sample->period; |
| 1135 | array++; |
| 1136 | } |
| 1137 | |
| 1138 | return 0; |
| 1139 | } |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1140 | |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 1141 | struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) |
| 1142 | { |
| 1143 | return pevent_find_field(evsel->tp_format, name); |
| 1144 | } |
| 1145 | |
Arnaldo Carvalho de Melo | 5d2074e | 2012-09-26 20:22:00 -0300 | [diff] [blame] | 1146 | void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1147 | const char *name) |
| 1148 | { |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 1149 | struct format_field *field = perf_evsel__field(evsel, name); |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1150 | int offset; |
| 1151 | |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 1152 | if (!field) |
| 1153 | return NULL; |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1154 | |
| 1155 | offset = field->offset; |
| 1156 | |
| 1157 | if (field->flags & FIELD_IS_DYNAMIC) { |
| 1158 | offset = *(int *)(sample->raw_data + field->offset); |
| 1159 | offset &= 0xffff; |
| 1160 | } |
| 1161 | |
| 1162 | return sample->raw_data + offset; |
| 1163 | } |
| 1164 | |
| 1165 | u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, |
| 1166 | const char *name) |
| 1167 | { |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 1168 | struct format_field *field = perf_evsel__field(evsel, name); |
Arnaldo Carvalho de Melo | e6b6f67 | 2012-09-26 13:13:04 -0300 | [diff] [blame] | 1169 | void *ptr; |
| 1170 | u64 value; |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1171 | |
Arnaldo Carvalho de Melo | efd2b92 | 2012-09-18 11:21:50 -0300 | [diff] [blame] | 1172 | if (!field) |
| 1173 | return 0; |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1174 | |
Arnaldo Carvalho de Melo | e6b6f67 | 2012-09-26 13:13:04 -0300 | [diff] [blame] | 1175 | ptr = sample->raw_data + field->offset; |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1176 | |
Arnaldo Carvalho de Melo | e6b6f67 | 2012-09-26 13:13:04 -0300 | [diff] [blame] | 1177 | switch (field->size) { |
| 1178 | case 1: |
| 1179 | return *(u8 *)ptr; |
| 1180 | case 2: |
| 1181 | value = *(u16 *)ptr; |
| 1182 | break; |
| 1183 | case 4: |
| 1184 | value = *(u32 *)ptr; |
| 1185 | break; |
| 1186 | case 8: |
| 1187 | value = *(u64 *)ptr; |
| 1188 | break; |
| 1189 | default: |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
| 1193 | if (!evsel->needs_swap) |
| 1194 | return value; |
| 1195 | |
| 1196 | switch (field->size) { |
| 1197 | case 2: |
| 1198 | return bswap_16(value); |
| 1199 | case 4: |
| 1200 | return bswap_32(value); |
| 1201 | case 8: |
| 1202 | return bswap_64(value); |
| 1203 | default: |
| 1204 | return 0; |
| 1205 | } |
| 1206 | |
| 1207 | return 0; |
Arnaldo Carvalho de Melo | 5555ded | 2012-09-11 19:24:23 -0300 | [diff] [blame] | 1208 | } |