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 | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 13 | #include "evsel.h" |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 14 | #include "evlist.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 15 | #include "util.h" |
Arnaldo Carvalho de Melo | 86bd5e8 | 2011-01-03 23:09:46 -0200 | [diff] [blame] | 16 | #include "cpumap.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 17 | #include "thread_map.h" |
Namhyung Kim | 12864b3 | 2012-04-26 14:15:22 +0900 | [diff] [blame] | 18 | #include "target.h" |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 19 | #include "../../../include/linux/hw_breakpoint.h" |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 20 | #include "../../include/linux/perf_event.h" |
| 21 | #include "perf_regs.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 22 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 23 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 24 | #define GROUP_FD(group_fd, cpu) (*(int *)xyarray__entry(group_fd, cpu, 0)) |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 25 | |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 26 | static int __perf_evsel__sample_size(u64 sample_type) |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 27 | { |
| 28 | u64 mask = sample_type & PERF_SAMPLE_MASK; |
| 29 | int size = 0; |
| 30 | int i; |
| 31 | |
| 32 | for (i = 0; i < 64; i++) { |
| 33 | if (mask & (1ULL << i)) |
| 34 | size++; |
| 35 | } |
| 36 | |
| 37 | size *= sizeof(u64); |
| 38 | |
| 39 | return size; |
| 40 | } |
| 41 | |
Jiri Olsa | 4bf9ce1 | 2012-03-22 14:37:26 +0100 | [diff] [blame] | 42 | void hists__init(struct hists *hists) |
Arnaldo Carvalho de Melo | 0e2a5f1 | 2011-11-04 08:16:58 -0200 | [diff] [blame] | 43 | { |
| 44 | memset(hists, 0, sizeof(*hists)); |
| 45 | hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT; |
| 46 | hists->entries_in = &hists->entries_in_array[0]; |
| 47 | hists->entries_collapsed = RB_ROOT; |
| 48 | hists->entries = RB_ROOT; |
| 49 | pthread_mutex_init(&hists->lock, NULL); |
| 50 | } |
| 51 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 52 | void perf_evsel__init(struct perf_evsel *evsel, |
| 53 | struct perf_event_attr *attr, int idx) |
| 54 | { |
| 55 | evsel->idx = idx; |
| 56 | evsel->attr = *attr; |
| 57 | INIT_LIST_HEAD(&evsel->node); |
Arnaldo Carvalho de Melo | 1980c2eb | 2011-10-05 17:50:23 -0300 | [diff] [blame] | 58 | hists__init(&evsel->hists); |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 59 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 60 | } |
| 61 | |
Lin Ming | 23a2f3a | 2011-01-07 11:11:09 +0800 | [diff] [blame] | 62 | 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] | 63 | { |
| 64 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); |
| 65 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 66 | if (evsel != NULL) |
| 67 | perf_evsel__init(evsel, attr, idx); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 68 | |
| 69 | return evsel; |
| 70 | } |
| 71 | |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 72 | static const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
| 73 | "cycles", |
| 74 | "instructions", |
| 75 | "cache-references", |
| 76 | "cache-misses", |
| 77 | "branches", |
| 78 | "branch-misses", |
| 79 | "bus-cycles", |
| 80 | "stalled-cycles-frontend", |
| 81 | "stalled-cycles-backend", |
| 82 | "ref-cycles", |
| 83 | }; |
| 84 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 85 | static const char *__perf_evsel__hw_name(u64 config) |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 86 | { |
| 87 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) |
| 88 | return perf_evsel__hw_names[config]; |
| 89 | |
| 90 | return "unknown-hardware"; |
| 91 | } |
| 92 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 93 | 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] | 94 | { |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 95 | int colon = 0, r = 0; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 96 | struct perf_event_attr *attr = &evsel->attr; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 97 | bool exclude_guest_default = false; |
| 98 | |
| 99 | #define MOD_PRINT(context, mod) do { \ |
| 100 | if (!attr->exclude_##context) { \ |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 101 | if (!colon) colon = ++r; \ |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 102 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
| 103 | } } while(0) |
| 104 | |
| 105 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { |
| 106 | MOD_PRINT(kernel, 'k'); |
| 107 | MOD_PRINT(user, 'u'); |
| 108 | MOD_PRINT(hv, 'h'); |
| 109 | exclude_guest_default = true; |
| 110 | } |
| 111 | |
| 112 | if (attr->precise_ip) { |
| 113 | if (!colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 114 | colon = ++r; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 115 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
| 116 | exclude_guest_default = true; |
| 117 | } |
| 118 | |
| 119 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { |
| 120 | MOD_PRINT(host, 'H'); |
| 121 | MOD_PRINT(guest, 'G'); |
| 122 | } |
| 123 | #undef MOD_PRINT |
| 124 | if (colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 125 | bf[colon - 1] = ':'; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 126 | return r; |
| 127 | } |
| 128 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 129 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 130 | { |
| 131 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); |
| 132 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 133 | } |
| 134 | |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 135 | static const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
| 136 | "cpu-clock", |
| 137 | "task-clock", |
| 138 | "page-faults", |
| 139 | "context-switches", |
| 140 | "CPU-migrations", |
| 141 | "minor-faults", |
| 142 | "major-faults", |
| 143 | "alignment-faults", |
| 144 | "emulation-faults", |
| 145 | }; |
| 146 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 147 | static const char *__perf_evsel__sw_name(u64 config) |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 148 | { |
| 149 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) |
| 150 | return perf_evsel__sw_names[config]; |
| 151 | return "unknown-software"; |
| 152 | } |
| 153 | |
| 154 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 155 | { |
| 156 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); |
| 157 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 158 | } |
| 159 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 160 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
| 161 | { |
| 162 | int r; |
| 163 | |
| 164 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); |
| 165 | |
| 166 | if (type & HW_BREAKPOINT_R) |
| 167 | r += scnprintf(bf + r, size - r, "r"); |
| 168 | |
| 169 | if (type & HW_BREAKPOINT_W) |
| 170 | r += scnprintf(bf + r, size - r, "w"); |
| 171 | |
| 172 | if (type & HW_BREAKPOINT_X) |
| 173 | r += scnprintf(bf + r, size - r, "x"); |
| 174 | |
| 175 | return r; |
| 176 | } |
| 177 | |
| 178 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 179 | { |
| 180 | struct perf_event_attr *attr = &evsel->attr; |
| 181 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); |
| 182 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 183 | } |
| 184 | |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 185 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
| 186 | [PERF_EVSEL__MAX_ALIASES] = { |
| 187 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
| 188 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, |
| 189 | { "LLC", "L2", }, |
| 190 | { "dTLB", "d-tlb", "Data-TLB", }, |
| 191 | { "iTLB", "i-tlb", "Instruction-TLB", }, |
| 192 | { "branch", "branches", "bpu", "btb", "bpc", }, |
| 193 | { "node", }, |
| 194 | }; |
| 195 | |
| 196 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] |
| 197 | [PERF_EVSEL__MAX_ALIASES] = { |
| 198 | { "load", "loads", "read", }, |
| 199 | { "store", "stores", "write", }, |
| 200 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, |
| 201 | }; |
| 202 | |
| 203 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] |
| 204 | [PERF_EVSEL__MAX_ALIASES] = { |
| 205 | { "refs", "Reference", "ops", "access", }, |
| 206 | { "misses", "miss", }, |
| 207 | }; |
| 208 | |
| 209 | #define C(x) PERF_COUNT_HW_CACHE_##x |
| 210 | #define CACHE_READ (1 << C(OP_READ)) |
| 211 | #define CACHE_WRITE (1 << C(OP_WRITE)) |
| 212 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) |
| 213 | #define COP(x) (1 << x) |
| 214 | |
| 215 | /* |
| 216 | * cache operartion stat |
| 217 | * L1I : Read and prefetch only |
| 218 | * ITLB and BPU : Read-only |
| 219 | */ |
| 220 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { |
| 221 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 222 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), |
| 223 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 224 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 225 | [C(ITLB)] = (CACHE_READ), |
| 226 | [C(BPU)] = (CACHE_READ), |
| 227 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 228 | }; |
| 229 | |
| 230 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) |
| 231 | { |
| 232 | if (perf_evsel__hw_cache_stat[type] & COP(op)) |
| 233 | return true; /* valid */ |
| 234 | else |
| 235 | return false; /* invalid */ |
| 236 | } |
| 237 | |
| 238 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, |
| 239 | char *bf, size_t size) |
| 240 | { |
| 241 | if (result) { |
| 242 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], |
| 243 | perf_evsel__hw_cache_op[op][0], |
| 244 | perf_evsel__hw_cache_result[result][0]); |
| 245 | } |
| 246 | |
| 247 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], |
| 248 | perf_evsel__hw_cache_op[op][1]); |
| 249 | } |
| 250 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 251 | 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] | 252 | { |
| 253 | u8 op, result, type = (config >> 0) & 0xff; |
| 254 | const char *err = "unknown-ext-hardware-cache-type"; |
| 255 | |
| 256 | if (type > PERF_COUNT_HW_CACHE_MAX) |
| 257 | goto out_err; |
| 258 | |
| 259 | op = (config >> 8) & 0xff; |
| 260 | err = "unknown-ext-hardware-cache-op"; |
| 261 | if (op > PERF_COUNT_HW_CACHE_OP_MAX) |
| 262 | goto out_err; |
| 263 | |
| 264 | result = (config >> 16) & 0xff; |
| 265 | err = "unknown-ext-hardware-cache-result"; |
| 266 | if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
| 267 | goto out_err; |
| 268 | |
| 269 | err = "invalid-cache"; |
| 270 | if (!perf_evsel__is_cache_op_valid(type, op)) |
| 271 | goto out_err; |
| 272 | |
| 273 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); |
| 274 | out_err: |
| 275 | return scnprintf(bf, size, "%s", err); |
| 276 | } |
| 277 | |
| 278 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 279 | { |
| 280 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); |
| 281 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 282 | } |
| 283 | |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 284 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 285 | { |
| 286 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); |
| 287 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 288 | } |
| 289 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 290 | const char *perf_evsel__name(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 291 | { |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 292 | char bf[128]; |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 293 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 294 | if (evsel->name) |
| 295 | return evsel->name; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 296 | |
| 297 | switch (evsel->attr.type) { |
| 298 | case PERF_TYPE_RAW: |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 299 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 300 | break; |
| 301 | |
| 302 | case PERF_TYPE_HARDWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 303 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 304 | break; |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 305 | |
| 306 | case PERF_TYPE_HW_CACHE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 307 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 308 | break; |
| 309 | |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 310 | case PERF_TYPE_SOFTWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 311 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 312 | break; |
| 313 | |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 314 | case PERF_TYPE_TRACEPOINT: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 315 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 316 | break; |
| 317 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 318 | case PERF_TYPE_BREAKPOINT: |
| 319 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); |
| 320 | break; |
| 321 | |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 322 | default: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 323 | scnprintf(bf, sizeof(bf), "%s", "unknown attr type"); |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 324 | break; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 325 | } |
| 326 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 327 | evsel->name = strdup(bf); |
| 328 | |
| 329 | return evsel->name ?: "unknown"; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 330 | } |
| 331 | |
Namhyung Kim | 5090c6a | 2012-03-16 17:42:20 +0900 | [diff] [blame] | 332 | void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts, |
| 333 | struct perf_evsel *first) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 334 | { |
| 335 | struct perf_event_attr *attr = &evsel->attr; |
| 336 | int track = !evsel->idx; /* only the first counter needs these */ |
| 337 | |
David Ahern | 5e1c81d | 2012-05-13 22:01:28 -0600 | [diff] [blame] | 338 | attr->disabled = 1; |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 339 | 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] | 340 | attr->inherit = !opts->no_inherit; |
| 341 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
| 342 | PERF_FORMAT_TOTAL_TIME_RUNNING | |
| 343 | PERF_FORMAT_ID; |
| 344 | |
| 345 | attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
| 346 | |
| 347 | /* |
| 348 | * We default some events to a 1 default interval. But keep |
| 349 | * it a weak assumption overridable by the user. |
| 350 | */ |
| 351 | if (!attr->sample_period || (opts->user_freq != UINT_MAX && |
| 352 | opts->user_interval != ULLONG_MAX)) { |
| 353 | if (opts->freq) { |
| 354 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
| 355 | attr->freq = 1; |
| 356 | attr->sample_freq = opts->freq; |
| 357 | } else { |
| 358 | attr->sample_period = opts->default_interval; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | if (opts->no_samples) |
| 363 | attr->sample_freq = 0; |
| 364 | |
| 365 | if (opts->inherit_stat) |
| 366 | attr->inherit_stat = 1; |
| 367 | |
| 368 | if (opts->sample_address) { |
| 369 | attr->sample_type |= PERF_SAMPLE_ADDR; |
| 370 | attr->mmap_data = track; |
| 371 | } |
| 372 | |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 373 | if (opts->call_graph) { |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 374 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; |
| 375 | |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 376 | if (opts->call_graph == CALLCHAIN_DWARF) { |
| 377 | attr->sample_type |= PERF_SAMPLE_REGS_USER | |
| 378 | PERF_SAMPLE_STACK_USER; |
| 379 | attr->sample_regs_user = PERF_REGS_MASK; |
| 380 | attr->sample_stack_user = opts->stack_dump_size; |
| 381 | attr->exclude_callchain_user = 1; |
| 382 | } |
| 383 | } |
| 384 | |
Namhyung Kim | e40ee74 | 2012-05-21 10:42:07 +0900 | [diff] [blame] | 385 | if (perf_target__has_cpu(&opts->target)) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 386 | attr->sample_type |= PERF_SAMPLE_CPU; |
| 387 | |
Andrew Vagin | 3e76ac7 | 2011-12-20 17:32:45 +0300 | [diff] [blame] | 388 | if (opts->period) |
| 389 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
| 390 | |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 391 | if (!opts->sample_id_all_missing && |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 392 | (opts->sample_time || !opts->no_inherit || |
Namhyung Kim | aa22dd4 | 2012-05-16 18:45:47 +0900 | [diff] [blame] | 393 | perf_target__has_cpu(&opts->target))) |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 394 | attr->sample_type |= PERF_SAMPLE_TIME; |
| 395 | |
| 396 | if (opts->raw_samples) { |
| 397 | attr->sample_type |= PERF_SAMPLE_TIME; |
| 398 | attr->sample_type |= PERF_SAMPLE_RAW; |
| 399 | attr->sample_type |= PERF_SAMPLE_CPU; |
| 400 | } |
| 401 | |
| 402 | if (opts->no_delay) { |
| 403 | attr->watermark = 0; |
| 404 | attr->wakeup_events = 1; |
| 405 | } |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 406 | if (opts->branch_stack) { |
| 407 | attr->sample_type |= PERF_SAMPLE_BRANCH_STACK; |
| 408 | attr->branch_sample_type = opts->branch_stack; |
| 409 | } |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 410 | |
| 411 | attr->mmap = track; |
| 412 | attr->comm = track; |
| 413 | |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 414 | if (perf_target__none(&opts->target) && |
| 415 | (!opts->group || evsel == first)) { |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 416 | attr->enable_on_exec = 1; |
| 417 | } |
| 418 | } |
| 419 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 420 | int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 421 | { |
David Ahern | 4af4c95 | 2011-05-27 09:58:34 -0600 | [diff] [blame] | 422 | int cpu, thread; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 423 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
David Ahern | 4af4c95 | 2011-05-27 09:58:34 -0600 | [diff] [blame] | 424 | |
| 425 | if (evsel->fd) { |
| 426 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 427 | for (thread = 0; thread < nthreads; thread++) { |
| 428 | FD(evsel, cpu, thread) = -1; |
| 429 | } |
| 430 | } |
| 431 | } |
| 432 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 433 | return evsel->fd != NULL ? 0 : -ENOMEM; |
| 434 | } |
| 435 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 436 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 437 | { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 438 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
| 439 | if (evsel->sample_id == NULL) |
| 440 | return -ENOMEM; |
| 441 | |
| 442 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); |
| 443 | if (evsel->id == NULL) { |
| 444 | xyarray__delete(evsel->sample_id); |
| 445 | evsel->sample_id = NULL; |
| 446 | return -ENOMEM; |
| 447 | } |
| 448 | |
| 449 | return 0; |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 450 | } |
| 451 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 452 | int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus) |
| 453 | { |
| 454 | evsel->counts = zalloc((sizeof(*evsel->counts) + |
| 455 | (ncpus * sizeof(struct perf_counts_values)))); |
| 456 | return evsel->counts != NULL ? 0 : -ENOMEM; |
| 457 | } |
| 458 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 459 | void perf_evsel__free_fd(struct perf_evsel *evsel) |
| 460 | { |
| 461 | xyarray__delete(evsel->fd); |
| 462 | evsel->fd = NULL; |
| 463 | } |
| 464 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 465 | void perf_evsel__free_id(struct perf_evsel *evsel) |
| 466 | { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 467 | xyarray__delete(evsel->sample_id); |
| 468 | evsel->sample_id = NULL; |
| 469 | free(evsel->id); |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 470 | evsel->id = NULL; |
| 471 | } |
| 472 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 473 | void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 474 | { |
| 475 | int cpu, thread; |
| 476 | |
| 477 | for (cpu = 0; cpu < ncpus; cpu++) |
| 478 | for (thread = 0; thread < nthreads; ++thread) { |
| 479 | close(FD(evsel, cpu, thread)); |
| 480 | FD(evsel, cpu, thread) = -1; |
| 481 | } |
| 482 | } |
| 483 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 484 | void perf_evsel__exit(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 485 | { |
| 486 | assert(list_empty(&evsel->node)); |
| 487 | xyarray__delete(evsel->fd); |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 488 | xyarray__delete(evsel->sample_id); |
| 489 | free(evsel->id); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | void perf_evsel__delete(struct perf_evsel *evsel) |
| 493 | { |
| 494 | perf_evsel__exit(evsel); |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 495 | close_cgroup(evsel->cgrp); |
Stephane Eranian | f0c55bc | 2011-02-16 15:10:01 +0200 | [diff] [blame] | 496 | free(evsel->name); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 497 | free(evsel); |
| 498 | } |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 499 | |
| 500 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
| 501 | int cpu, int thread, bool scale) |
| 502 | { |
| 503 | struct perf_counts_values count; |
| 504 | size_t nv = scale ? 3 : 1; |
| 505 | |
| 506 | if (FD(evsel, cpu, thread) < 0) |
| 507 | return -EINVAL; |
| 508 | |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 509 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0) |
| 510 | return -ENOMEM; |
| 511 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 512 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
| 513 | return -errno; |
| 514 | |
| 515 | if (scale) { |
| 516 | if (count.run == 0) |
| 517 | count.val = 0; |
| 518 | else if (count.run < count.ena) |
| 519 | count.val = (u64)((double)count.val * count.ena / count.run + 0.5); |
| 520 | } else |
| 521 | count.ena = count.run = 0; |
| 522 | |
| 523 | evsel->counts->cpu[cpu] = count; |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | int __perf_evsel__read(struct perf_evsel *evsel, |
| 528 | int ncpus, int nthreads, bool scale) |
| 529 | { |
| 530 | size_t nv = scale ? 3 : 1; |
| 531 | int cpu, thread; |
| 532 | struct perf_counts_values *aggr = &evsel->counts->aggr, count; |
| 533 | |
Arnaldo Carvalho de Melo | 52bcd994 | 2011-02-03 17:26:06 -0200 | [diff] [blame] | 534 | aggr->val = aggr->ena = aggr->run = 0; |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 535 | |
| 536 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 537 | for (thread = 0; thread < nthreads; thread++) { |
| 538 | if (FD(evsel, cpu, thread) < 0) |
| 539 | continue; |
| 540 | |
| 541 | if (readn(FD(evsel, cpu, thread), |
| 542 | &count, nv * sizeof(u64)) < 0) |
| 543 | return -errno; |
| 544 | |
| 545 | aggr->val += count.val; |
| 546 | if (scale) { |
| 547 | aggr->ena += count.ena; |
| 548 | aggr->run += count.run; |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | evsel->counts->scaled = 0; |
| 554 | if (scale) { |
| 555 | if (aggr->run == 0) { |
| 556 | evsel->counts->scaled = -1; |
| 557 | aggr->val = 0; |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | if (aggr->run < aggr->ena) { |
| 562 | evsel->counts->scaled = 1; |
| 563 | aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5); |
| 564 | } |
| 565 | } else |
| 566 | aggr->ena = aggr->run = 0; |
| 567 | |
| 568 | return 0; |
| 569 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 570 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 571 | static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 572 | struct thread_map *threads, bool group, |
| 573 | struct xyarray *group_fds) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 574 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 575 | int cpu, thread; |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 576 | unsigned long flags = 0; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 577 | int pid = -1, err; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 578 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 579 | if (evsel->fd == NULL && |
| 580 | perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 581 | return -ENOMEM; |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 582 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 583 | if (evsel->cgrp) { |
| 584 | flags = PERF_FLAG_PID_CGROUP; |
| 585 | pid = evsel->cgrp->fd; |
| 586 | } |
| 587 | |
Arnaldo Carvalho de Melo | 86bd5e8 | 2011-01-03 23:09:46 -0200 | [diff] [blame] | 588 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 589 | int group_fd = group_fds ? GROUP_FD(group_fds, cpu) : -1; |
Arnaldo Carvalho de Melo | 9d04f17 | 2011-01-12 00:08:18 -0200 | [diff] [blame] | 590 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 591 | for (thread = 0; thread < threads->nr; thread++) { |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 592 | |
| 593 | if (!evsel->cgrp) |
| 594 | pid = threads->map[thread]; |
| 595 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 596 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 597 | pid, |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 598 | cpus->map[cpu], |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 599 | group_fd, flags); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 600 | if (FD(evsel, cpu, thread) < 0) { |
| 601 | err = -errno; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 602 | goto out_close; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 603 | } |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 604 | |
| 605 | if (group && group_fd == -1) |
| 606 | group_fd = FD(evsel, cpu, thread); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 607 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 608 | } |
| 609 | |
| 610 | return 0; |
| 611 | |
| 612 | out_close: |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 613 | do { |
| 614 | while (--thread >= 0) { |
| 615 | close(FD(evsel, cpu, thread)); |
| 616 | FD(evsel, cpu, thread) = -1; |
| 617 | } |
| 618 | thread = threads->nr; |
| 619 | } while (--cpu >= 0); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 620 | return err; |
| 621 | } |
| 622 | |
| 623 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 624 | { |
| 625 | if (evsel->fd == NULL) |
| 626 | return; |
| 627 | |
| 628 | perf_evsel__close_fd(evsel, ncpus, nthreads); |
| 629 | perf_evsel__free_fd(evsel); |
| 630 | evsel->fd = NULL; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 631 | } |
| 632 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 633 | static struct { |
| 634 | struct cpu_map map; |
| 635 | int cpus[1]; |
| 636 | } empty_cpu_map = { |
| 637 | .map.nr = 1, |
| 638 | .cpus = { -1, }, |
| 639 | }; |
| 640 | |
| 641 | static struct { |
| 642 | struct thread_map map; |
| 643 | int threads[1]; |
| 644 | } empty_thread_map = { |
| 645 | .map.nr = 1, |
| 646 | .threads = { -1, }, |
| 647 | }; |
| 648 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 649 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 650 | struct thread_map *threads, bool group, |
| 651 | struct xyarray *group_fd) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 652 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 653 | if (cpus == NULL) { |
| 654 | /* Work around old compiler warnings about strict aliasing */ |
| 655 | cpus = &empty_cpu_map.map; |
| 656 | } |
| 657 | |
| 658 | if (threads == NULL) |
| 659 | threads = &empty_thread_map.map; |
| 660 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 661 | return __perf_evsel__open(evsel, cpus, threads, group, group_fd); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 662 | } |
| 663 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 664 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 665 | struct cpu_map *cpus, bool group, |
| 666 | struct xyarray *group_fd) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 667 | { |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 668 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map, group, |
| 669 | group_fd); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 670 | } |
| 671 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 672 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 673 | struct thread_map *threads, bool group, |
| 674 | struct xyarray *group_fd) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 675 | { |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 676 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads, group, |
| 677 | group_fd); |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 678 | } |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 679 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 680 | static int perf_event__parse_id_sample(const union perf_event *event, u64 type, |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 681 | struct perf_sample *sample, |
| 682 | bool swapped) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 683 | { |
| 684 | const u64 *array = event->sample.array; |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 685 | union u64_swap u; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 686 | |
| 687 | array += ((event->header.size - |
| 688 | sizeof(event->header)) / sizeof(u64)) - 1; |
| 689 | |
| 690 | if (type & PERF_SAMPLE_CPU) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 691 | u.val64 = *array; |
| 692 | if (swapped) { |
| 693 | /* undo swap of u64, then swap on individual u32s */ |
| 694 | u.val64 = bswap_64(u.val64); |
| 695 | u.val32[0] = bswap_32(u.val32[0]); |
| 696 | } |
| 697 | |
| 698 | sample->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 699 | array--; |
| 700 | } |
| 701 | |
| 702 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 703 | sample->stream_id = *array; |
| 704 | array--; |
| 705 | } |
| 706 | |
| 707 | if (type & PERF_SAMPLE_ID) { |
| 708 | sample->id = *array; |
| 709 | array--; |
| 710 | } |
| 711 | |
| 712 | if (type & PERF_SAMPLE_TIME) { |
| 713 | sample->time = *array; |
| 714 | array--; |
| 715 | } |
| 716 | |
| 717 | if (type & PERF_SAMPLE_TID) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 718 | u.val64 = *array; |
| 719 | if (swapped) { |
| 720 | /* undo swap of u64, then swap on individual u32s */ |
| 721 | u.val64 = bswap_64(u.val64); |
| 722 | u.val32[0] = bswap_32(u.val32[0]); |
| 723 | u.val32[1] = bswap_32(u.val32[1]); |
| 724 | } |
| 725 | |
| 726 | sample->pid = u.val32[0]; |
| 727 | sample->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 728 | } |
| 729 | |
| 730 | return 0; |
| 731 | } |
| 732 | |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 733 | static bool sample_overlap(const union perf_event *event, |
| 734 | const void *offset, u64 size) |
| 735 | { |
| 736 | const void *base = event; |
| 737 | |
| 738 | if (offset + size > base + event->header.size) |
| 739 | return true; |
| 740 | |
| 741 | return false; |
| 742 | } |
| 743 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 744 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 745 | struct perf_sample *data, bool swapped) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 746 | { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 747 | u64 type = evsel->attr.sample_type; |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 748 | u64 regs_user = evsel->attr.sample_regs_user; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 749 | const u64 *array; |
| 750 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 751 | /* |
| 752 | * used for cross-endian analysis. See git commit 65014ab3 |
| 753 | * for why this goofiness is needed. |
| 754 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 755 | union u64_swap u; |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 756 | |
Robert Richter | f3bda2c | 2011-12-15 17:32:39 +0100 | [diff] [blame] | 757 | memset(data, 0, sizeof(*data)); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 758 | data->cpu = data->pid = data->tid = -1; |
| 759 | data->stream_id = data->id = data->time = -1ULL; |
Naveen N. Rao | a4a03fc | 2012-02-03 22:31:13 +0530 | [diff] [blame] | 760 | data->period = 1; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 761 | |
| 762 | if (event->header.type != PERF_RECORD_SAMPLE) { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 763 | if (!evsel->attr.sample_id_all) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 764 | return 0; |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 765 | return perf_event__parse_id_sample(event, type, data, swapped); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | array = event->sample.array; |
| 769 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 770 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
Frederic Weisbecker | a285412 | 2011-05-21 19:33:04 +0200 | [diff] [blame] | 771 | return -EFAULT; |
| 772 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 773 | if (type & PERF_SAMPLE_IP) { |
| 774 | data->ip = event->ip.ip; |
| 775 | array++; |
| 776 | } |
| 777 | |
| 778 | if (type & PERF_SAMPLE_TID) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 779 | u.val64 = *array; |
| 780 | if (swapped) { |
| 781 | /* undo swap of u64, then swap on individual u32s */ |
| 782 | u.val64 = bswap_64(u.val64); |
| 783 | u.val32[0] = bswap_32(u.val32[0]); |
| 784 | u.val32[1] = bswap_32(u.val32[1]); |
| 785 | } |
| 786 | |
| 787 | data->pid = u.val32[0]; |
| 788 | data->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 789 | array++; |
| 790 | } |
| 791 | |
| 792 | if (type & PERF_SAMPLE_TIME) { |
| 793 | data->time = *array; |
| 794 | array++; |
| 795 | } |
| 796 | |
David Ahern | 7cec092 | 2011-05-30 13:08:23 -0600 | [diff] [blame] | 797 | data->addr = 0; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 798 | if (type & PERF_SAMPLE_ADDR) { |
| 799 | data->addr = *array; |
| 800 | array++; |
| 801 | } |
| 802 | |
| 803 | data->id = -1ULL; |
| 804 | if (type & PERF_SAMPLE_ID) { |
| 805 | data->id = *array; |
| 806 | array++; |
| 807 | } |
| 808 | |
| 809 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 810 | data->stream_id = *array; |
| 811 | array++; |
| 812 | } |
| 813 | |
| 814 | if (type & PERF_SAMPLE_CPU) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 815 | |
| 816 | u.val64 = *array; |
| 817 | if (swapped) { |
| 818 | /* undo swap of u64, then swap on individual u32s */ |
| 819 | u.val64 = bswap_64(u.val64); |
| 820 | u.val32[0] = bswap_32(u.val32[0]); |
| 821 | } |
| 822 | |
| 823 | data->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 824 | array++; |
| 825 | } |
| 826 | |
| 827 | if (type & PERF_SAMPLE_PERIOD) { |
| 828 | data->period = *array; |
| 829 | array++; |
| 830 | } |
| 831 | |
| 832 | if (type & PERF_SAMPLE_READ) { |
Masanari Iida | f9d3699 | 2012-01-25 15:20:40 +0100 | [diff] [blame] | 833 | fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n"); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 834 | return -1; |
| 835 | } |
| 836 | |
| 837 | if (type & PERF_SAMPLE_CALLCHAIN) { |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 838 | if (sample_overlap(event, array, sizeof(data->callchain->nr))) |
| 839 | return -EFAULT; |
| 840 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 841 | data->callchain = (struct ip_callchain *)array; |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 842 | |
| 843 | if (sample_overlap(event, array, data->callchain->nr)) |
| 844 | return -EFAULT; |
| 845 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 846 | array += 1 + data->callchain->nr; |
| 847 | } |
| 848 | |
| 849 | if (type & PERF_SAMPLE_RAW) { |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 850 | const u64 *pdata; |
| 851 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 852 | u.val64 = *array; |
| 853 | if (WARN_ONCE(swapped, |
| 854 | "Endianness of raw data not corrected!\n")) { |
| 855 | /* undo swap of u64, then swap on individual u32s */ |
| 856 | u.val64 = bswap_64(u.val64); |
| 857 | u.val32[0] = bswap_32(u.val32[0]); |
| 858 | u.val32[1] = bswap_32(u.val32[1]); |
| 859 | } |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 860 | |
| 861 | if (sample_overlap(event, array, sizeof(u32))) |
| 862 | return -EFAULT; |
| 863 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 864 | data->raw_size = u.val32[0]; |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 865 | pdata = (void *) array + sizeof(u32); |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 866 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 867 | if (sample_overlap(event, pdata, data->raw_size)) |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 868 | return -EFAULT; |
| 869 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 870 | data->raw_data = (void *) pdata; |
Stephane Eranian | fa30c96 | 2012-03-17 23:23:18 +0100 | [diff] [blame] | 871 | |
| 872 | array = (void *)array + data->raw_size + sizeof(u32); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 873 | } |
| 874 | |
Roberto Agostino Vitillo | b538752 | 2012-02-09 23:21:01 +0100 | [diff] [blame] | 875 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
| 876 | u64 sz; |
| 877 | |
| 878 | data->branch_stack = (struct branch_stack *)array; |
| 879 | array++; /* nr */ |
| 880 | |
| 881 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
| 882 | sz /= sizeof(u64); |
| 883 | array += sz; |
| 884 | } |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 885 | |
| 886 | if (type & PERF_SAMPLE_REGS_USER) { |
| 887 | /* First u64 tells us if we have any regs in sample. */ |
| 888 | u64 avail = *array++; |
| 889 | |
| 890 | if (avail) { |
| 891 | data->user_regs.regs = (u64 *)array; |
| 892 | array += hweight_long(regs_user); |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | if (type & PERF_SAMPLE_STACK_USER) { |
| 897 | u64 size = *array++; |
| 898 | |
| 899 | data->user_stack.offset = ((char *)(array - 1) |
| 900 | - (char *) event); |
| 901 | |
| 902 | if (!size) { |
| 903 | data->user_stack.size = 0; |
| 904 | } else { |
| 905 | data->user_stack.data = (char *)array; |
| 906 | array += size / sizeof(*array); |
| 907 | data->user_stack.size = *array; |
| 908 | } |
| 909 | } |
| 910 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 911 | return 0; |
| 912 | } |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 913 | |
| 914 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
| 915 | const struct perf_sample *sample, |
| 916 | bool swapped) |
| 917 | { |
| 918 | u64 *array; |
| 919 | |
| 920 | /* |
| 921 | * used for cross-endian analysis. See git commit 65014ab3 |
| 922 | * for why this goofiness is needed. |
| 923 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 924 | union u64_swap u; |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 925 | |
| 926 | array = event->sample.array; |
| 927 | |
| 928 | if (type & PERF_SAMPLE_IP) { |
| 929 | event->ip.ip = sample->ip; |
| 930 | array++; |
| 931 | } |
| 932 | |
| 933 | if (type & PERF_SAMPLE_TID) { |
| 934 | u.val32[0] = sample->pid; |
| 935 | u.val32[1] = sample->tid; |
| 936 | if (swapped) { |
| 937 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 938 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 939 | */ |
| 940 | u.val32[0] = bswap_32(u.val32[0]); |
| 941 | u.val32[1] = bswap_32(u.val32[1]); |
| 942 | u.val64 = bswap_64(u.val64); |
| 943 | } |
| 944 | |
| 945 | *array = u.val64; |
| 946 | array++; |
| 947 | } |
| 948 | |
| 949 | if (type & PERF_SAMPLE_TIME) { |
| 950 | *array = sample->time; |
| 951 | array++; |
| 952 | } |
| 953 | |
| 954 | if (type & PERF_SAMPLE_ADDR) { |
| 955 | *array = sample->addr; |
| 956 | array++; |
| 957 | } |
| 958 | |
| 959 | if (type & PERF_SAMPLE_ID) { |
| 960 | *array = sample->id; |
| 961 | array++; |
| 962 | } |
| 963 | |
| 964 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 965 | *array = sample->stream_id; |
| 966 | array++; |
| 967 | } |
| 968 | |
| 969 | if (type & PERF_SAMPLE_CPU) { |
| 970 | u.val32[0] = sample->cpu; |
| 971 | if (swapped) { |
| 972 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 973 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 974 | */ |
| 975 | u.val32[0] = bswap_32(u.val32[0]); |
| 976 | u.val64 = bswap_64(u.val64); |
| 977 | } |
| 978 | *array = u.val64; |
| 979 | array++; |
| 980 | } |
| 981 | |
| 982 | if (type & PERF_SAMPLE_PERIOD) { |
| 983 | *array = sample->period; |
| 984 | array++; |
| 985 | } |
| 986 | |
| 987 | return 0; |
| 988 | } |