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)) |
| 24 | |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 25 | static int __perf_evsel__sample_size(u64 sample_type) |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 26 | { |
| 27 | u64 mask = sample_type & PERF_SAMPLE_MASK; |
| 28 | int size = 0; |
| 29 | int i; |
| 30 | |
| 31 | for (i = 0; i < 64; i++) { |
| 32 | if (mask & (1ULL << i)) |
| 33 | size++; |
| 34 | } |
| 35 | |
| 36 | size *= sizeof(u64); |
| 37 | |
| 38 | return size; |
| 39 | } |
| 40 | |
Jiri Olsa | 4bf9ce1 | 2012-03-22 14:37:26 +0100 | [diff] [blame] | 41 | void hists__init(struct hists *hists) |
Arnaldo Carvalho de Melo | 0e2a5f1 | 2011-11-04 08:16:58 -0200 | [diff] [blame] | 42 | { |
| 43 | memset(hists, 0, sizeof(*hists)); |
| 44 | hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT; |
| 45 | hists->entries_in = &hists->entries_in_array[0]; |
| 46 | hists->entries_collapsed = RB_ROOT; |
| 47 | hists->entries = RB_ROOT; |
| 48 | pthread_mutex_init(&hists->lock, NULL); |
| 49 | } |
| 50 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 51 | void perf_evsel__init(struct perf_evsel *evsel, |
| 52 | struct perf_event_attr *attr, int idx) |
| 53 | { |
| 54 | evsel->idx = idx; |
| 55 | evsel->attr = *attr; |
| 56 | INIT_LIST_HEAD(&evsel->node); |
Arnaldo Carvalho de Melo | 1980c2eb | 2011-10-05 17:50:23 -0300 | [diff] [blame] | 57 | hists__init(&evsel->hists); |
Arnaldo Carvalho de Melo | bde0946 | 2012-08-01 18:53:11 -0300 | [diff] [blame] | 58 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 59 | } |
| 60 | |
Lin Ming | 23a2f3a | 2011-01-07 11:11:09 +0800 | [diff] [blame] | 61 | 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] | 62 | { |
| 63 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); |
| 64 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 65 | if (evsel != NULL) |
| 66 | perf_evsel__init(evsel, attr, idx); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 67 | |
| 68 | return evsel; |
| 69 | } |
| 70 | |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 71 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 72 | "cycles", |
| 73 | "instructions", |
| 74 | "cache-references", |
| 75 | "cache-misses", |
| 76 | "branches", |
| 77 | "branch-misses", |
| 78 | "bus-cycles", |
| 79 | "stalled-cycles-frontend", |
| 80 | "stalled-cycles-backend", |
| 81 | "ref-cycles", |
| 82 | }; |
| 83 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 84 | static const char *__perf_evsel__hw_name(u64 config) |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 85 | { |
| 86 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) |
| 87 | return perf_evsel__hw_names[config]; |
| 88 | |
| 89 | return "unknown-hardware"; |
| 90 | } |
| 91 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 92 | 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] | 93 | { |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 94 | int colon = 0, r = 0; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 95 | struct perf_event_attr *attr = &evsel->attr; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 96 | bool exclude_guest_default = false; |
| 97 | |
| 98 | #define MOD_PRINT(context, mod) do { \ |
| 99 | if (!attr->exclude_##context) { \ |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 100 | if (!colon) colon = ++r; \ |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 101 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
| 102 | } } while(0) |
| 103 | |
| 104 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { |
| 105 | MOD_PRINT(kernel, 'k'); |
| 106 | MOD_PRINT(user, 'u'); |
| 107 | MOD_PRINT(hv, 'h'); |
| 108 | exclude_guest_default = true; |
| 109 | } |
| 110 | |
| 111 | if (attr->precise_ip) { |
| 112 | if (!colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 113 | colon = ++r; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 114 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
| 115 | exclude_guest_default = true; |
| 116 | } |
| 117 | |
| 118 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { |
| 119 | MOD_PRINT(host, 'H'); |
| 120 | MOD_PRINT(guest, 'G'); |
| 121 | } |
| 122 | #undef MOD_PRINT |
| 123 | if (colon) |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 124 | bf[colon - 1] = ':'; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 125 | return r; |
| 126 | } |
| 127 | |
Arnaldo Carvalho de Melo | 27f1861 | 2012-06-11 13:33:09 -0300 | [diff] [blame] | 128 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 129 | { |
| 130 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); |
| 131 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 132 | } |
| 133 | |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 134 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 135 | "cpu-clock", |
| 136 | "task-clock", |
| 137 | "page-faults", |
| 138 | "context-switches", |
Arnaldo Carvalho de Melo | 8ad7013 | 2012-09-06 13:11:18 -0300 | [diff] [blame] | 139 | "cpu-migrations", |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 140 | "minor-faults", |
| 141 | "major-faults", |
| 142 | "alignment-faults", |
| 143 | "emulation-faults", |
| 144 | }; |
| 145 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 146 | static const char *__perf_evsel__sw_name(u64 config) |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 147 | { |
| 148 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) |
| 149 | return perf_evsel__sw_names[config]; |
| 150 | return "unknown-software"; |
| 151 | } |
| 152 | |
| 153 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 154 | { |
| 155 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); |
| 156 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 157 | } |
| 158 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 159 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
| 160 | { |
| 161 | int r; |
| 162 | |
| 163 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); |
| 164 | |
| 165 | if (type & HW_BREAKPOINT_R) |
| 166 | r += scnprintf(bf + r, size - r, "r"); |
| 167 | |
| 168 | if (type & HW_BREAKPOINT_W) |
| 169 | r += scnprintf(bf + r, size - r, "w"); |
| 170 | |
| 171 | if (type & HW_BREAKPOINT_X) |
| 172 | r += scnprintf(bf + r, size - r, "x"); |
| 173 | |
| 174 | return r; |
| 175 | } |
| 176 | |
| 177 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 178 | { |
| 179 | struct perf_event_attr *attr = &evsel->attr; |
| 180 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); |
| 181 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); |
| 182 | } |
| 183 | |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 184 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
| 185 | [PERF_EVSEL__MAX_ALIASES] = { |
| 186 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
| 187 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, |
| 188 | { "LLC", "L2", }, |
| 189 | { "dTLB", "d-tlb", "Data-TLB", }, |
| 190 | { "iTLB", "i-tlb", "Instruction-TLB", }, |
| 191 | { "branch", "branches", "bpu", "btb", "bpc", }, |
| 192 | { "node", }, |
| 193 | }; |
| 194 | |
| 195 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] |
| 196 | [PERF_EVSEL__MAX_ALIASES] = { |
| 197 | { "load", "loads", "read", }, |
| 198 | { "store", "stores", "write", }, |
| 199 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, |
| 200 | }; |
| 201 | |
| 202 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] |
| 203 | [PERF_EVSEL__MAX_ALIASES] = { |
| 204 | { "refs", "Reference", "ops", "access", }, |
| 205 | { "misses", "miss", }, |
| 206 | }; |
| 207 | |
| 208 | #define C(x) PERF_COUNT_HW_CACHE_##x |
| 209 | #define CACHE_READ (1 << C(OP_READ)) |
| 210 | #define CACHE_WRITE (1 << C(OP_WRITE)) |
| 211 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) |
| 212 | #define COP(x) (1 << x) |
| 213 | |
| 214 | /* |
| 215 | * cache operartion stat |
| 216 | * L1I : Read and prefetch only |
| 217 | * ITLB and BPU : Read-only |
| 218 | */ |
| 219 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { |
| 220 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 221 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), |
| 222 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 223 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 224 | [C(ITLB)] = (CACHE_READ), |
| 225 | [C(BPU)] = (CACHE_READ), |
| 226 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), |
| 227 | }; |
| 228 | |
| 229 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) |
| 230 | { |
| 231 | if (perf_evsel__hw_cache_stat[type] & COP(op)) |
| 232 | return true; /* valid */ |
| 233 | else |
| 234 | return false; /* invalid */ |
| 235 | } |
| 236 | |
| 237 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, |
| 238 | char *bf, size_t size) |
| 239 | { |
| 240 | if (result) { |
| 241 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], |
| 242 | perf_evsel__hw_cache_op[op][0], |
| 243 | perf_evsel__hw_cache_result[result][0]); |
| 244 | } |
| 245 | |
| 246 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], |
| 247 | perf_evsel__hw_cache_op[op][1]); |
| 248 | } |
| 249 | |
Arnaldo Carvalho de Melo | dd4f522 | 2012-06-13 15:52:42 -0300 | [diff] [blame] | 250 | 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] | 251 | { |
| 252 | u8 op, result, type = (config >> 0) & 0xff; |
| 253 | const char *err = "unknown-ext-hardware-cache-type"; |
| 254 | |
| 255 | if (type > PERF_COUNT_HW_CACHE_MAX) |
| 256 | goto out_err; |
| 257 | |
| 258 | op = (config >> 8) & 0xff; |
| 259 | err = "unknown-ext-hardware-cache-op"; |
| 260 | if (op > PERF_COUNT_HW_CACHE_OP_MAX) |
| 261 | goto out_err; |
| 262 | |
| 263 | result = (config >> 16) & 0xff; |
| 264 | err = "unknown-ext-hardware-cache-result"; |
| 265 | if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
| 266 | goto out_err; |
| 267 | |
| 268 | err = "invalid-cache"; |
| 269 | if (!perf_evsel__is_cache_op_valid(type, op)) |
| 270 | goto out_err; |
| 271 | |
| 272 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); |
| 273 | out_err: |
| 274 | return scnprintf(bf, size, "%s", err); |
| 275 | } |
| 276 | |
| 277 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 278 | { |
| 279 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); |
| 280 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 281 | } |
| 282 | |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 283 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
| 284 | { |
| 285 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); |
| 286 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); |
| 287 | } |
| 288 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 289 | const char *perf_evsel__name(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 290 | { |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 291 | char bf[128]; |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 292 | |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 293 | if (evsel->name) |
| 294 | return evsel->name; |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 295 | |
| 296 | switch (evsel->attr.type) { |
| 297 | case PERF_TYPE_RAW: |
Arnaldo Carvalho de Melo | 6eef3d9 | 2012-06-13 11:53:37 -0300 | [diff] [blame] | 298 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 299 | break; |
| 300 | |
| 301 | case PERF_TYPE_HARDWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 302 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 303 | break; |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 304 | |
| 305 | case PERF_TYPE_HW_CACHE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 306 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 0b668bc | 2012-06-11 14:08:07 -0300 | [diff] [blame] | 307 | break; |
| 308 | |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 309 | case PERF_TYPE_SOFTWARE: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 310 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
Arnaldo Carvalho de Melo | 335c2f5 | 2012-06-11 14:36:20 -0300 | [diff] [blame] | 311 | break; |
| 312 | |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 313 | case PERF_TYPE_TRACEPOINT: |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 314 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
Arnaldo Carvalho de Melo | a446083 | 2012-06-12 10:29:12 -0300 | [diff] [blame] | 315 | break; |
| 316 | |
Jiri Olsa | 287e74a | 2012-06-28 23:18:49 +0200 | [diff] [blame] | 317 | case PERF_TYPE_BREAKPOINT: |
| 318 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); |
| 319 | break; |
| 320 | |
Arnaldo Carvalho de Melo | c410431 | 2012-05-25 16:38:11 -0300 | [diff] [blame] | 321 | default: |
Robert Richter | ca1b145 | 2012-08-16 21:10:18 +0200 | [diff] [blame] | 322 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
| 323 | evsel->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); |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 496 | free(evsel->group_name); |
Stephane Eranian | f0c55bc | 2011-02-16 15:10:01 +0200 | [diff] [blame] | 497 | free(evsel->name); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 498 | free(evsel); |
| 499 | } |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 500 | |
| 501 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
| 502 | int cpu, int thread, bool scale) |
| 503 | { |
| 504 | struct perf_counts_values count; |
| 505 | size_t nv = scale ? 3 : 1; |
| 506 | |
| 507 | if (FD(evsel, cpu, thread) < 0) |
| 508 | return -EINVAL; |
| 509 | |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 510 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0) |
| 511 | return -ENOMEM; |
| 512 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 513 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
| 514 | return -errno; |
| 515 | |
| 516 | if (scale) { |
| 517 | if (count.run == 0) |
| 518 | count.val = 0; |
| 519 | else if (count.run < count.ena) |
| 520 | count.val = (u64)((double)count.val * count.ena / count.run + 0.5); |
| 521 | } else |
| 522 | count.ena = count.run = 0; |
| 523 | |
| 524 | evsel->counts->cpu[cpu] = count; |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | int __perf_evsel__read(struct perf_evsel *evsel, |
| 529 | int ncpus, int nthreads, bool scale) |
| 530 | { |
| 531 | size_t nv = scale ? 3 : 1; |
| 532 | int cpu, thread; |
| 533 | struct perf_counts_values *aggr = &evsel->counts->aggr, count; |
| 534 | |
Arnaldo Carvalho de Melo | 52bcd994 | 2011-02-03 17:26:06 -0200 | [diff] [blame] | 535 | aggr->val = aggr->ena = aggr->run = 0; |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 536 | |
| 537 | for (cpu = 0; cpu < ncpus; cpu++) { |
| 538 | for (thread = 0; thread < nthreads; thread++) { |
| 539 | if (FD(evsel, cpu, thread) < 0) |
| 540 | continue; |
| 541 | |
| 542 | if (readn(FD(evsel, cpu, thread), |
| 543 | &count, nv * sizeof(u64)) < 0) |
| 544 | return -errno; |
| 545 | |
| 546 | aggr->val += count.val; |
| 547 | if (scale) { |
| 548 | aggr->ena += count.ena; |
| 549 | aggr->run += count.run; |
| 550 | } |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | evsel->counts->scaled = 0; |
| 555 | if (scale) { |
| 556 | if (aggr->run == 0) { |
| 557 | evsel->counts->scaled = -1; |
| 558 | aggr->val = 0; |
| 559 | return 0; |
| 560 | } |
| 561 | |
| 562 | if (aggr->run < aggr->ena) { |
| 563 | evsel->counts->scaled = 1; |
| 564 | aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5); |
| 565 | } |
| 566 | } else |
| 567 | aggr->ena = aggr->run = 0; |
| 568 | |
| 569 | return 0; |
| 570 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 571 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 572 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
| 573 | { |
| 574 | struct perf_evsel *leader = evsel->leader; |
| 575 | int fd; |
| 576 | |
| 577 | if (!leader) |
| 578 | return -1; |
| 579 | |
| 580 | /* |
| 581 | * Leader must be already processed/open, |
| 582 | * if not it's a bug. |
| 583 | */ |
| 584 | BUG_ON(!leader->fd); |
| 585 | |
| 586 | fd = FD(leader, cpu, thread); |
| 587 | BUG_ON(fd == -1); |
| 588 | |
| 589 | return fd; |
| 590 | } |
| 591 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 592 | 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] | 593 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 594 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 595 | int cpu, thread; |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 596 | unsigned long flags = 0; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 597 | int pid = -1, err; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 598 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 599 | if (evsel->fd == NULL && |
| 600 | perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 601 | return -ENOMEM; |
Arnaldo Carvalho de Melo | 4eed11d | 2011-01-04 00:13:17 -0200 | [diff] [blame] | 602 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 603 | if (evsel->cgrp) { |
| 604 | flags = PERF_FLAG_PID_CGROUP; |
| 605 | pid = evsel->cgrp->fd; |
| 606 | } |
| 607 | |
Arnaldo Carvalho de Melo | 86bd5e8 | 2011-01-03 23:09:46 -0200 | [diff] [blame] | 608 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | 9d04f17 | 2011-01-12 00:08:18 -0200 | [diff] [blame] | 609 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 610 | for (thread = 0; thread < threads->nr; thread++) { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 611 | int group_fd; |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 612 | |
| 613 | if (!evsel->cgrp) |
| 614 | pid = threads->map[thread]; |
| 615 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 616 | group_fd = get_group_fd(evsel, cpu, thread); |
| 617 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 618 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 619 | pid, |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 620 | cpus->map[cpu], |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 621 | group_fd, flags); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 622 | if (FD(evsel, cpu, thread) < 0) { |
| 623 | err = -errno; |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 624 | goto out_close; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 625 | } |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 626 | } |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | return 0; |
| 630 | |
| 631 | out_close: |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 632 | do { |
| 633 | while (--thread >= 0) { |
| 634 | close(FD(evsel, cpu, thread)); |
| 635 | FD(evsel, cpu, thread) = -1; |
| 636 | } |
| 637 | thread = threads->nr; |
| 638 | } while (--cpu >= 0); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 639 | return err; |
| 640 | } |
| 641 | |
| 642 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) |
| 643 | { |
| 644 | if (evsel->fd == NULL) |
| 645 | return; |
| 646 | |
| 647 | perf_evsel__close_fd(evsel, ncpus, nthreads); |
| 648 | perf_evsel__free_fd(evsel); |
| 649 | evsel->fd = NULL; |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 650 | } |
| 651 | |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 652 | static struct { |
| 653 | struct cpu_map map; |
| 654 | int cpus[1]; |
| 655 | } empty_cpu_map = { |
| 656 | .map.nr = 1, |
| 657 | .cpus = { -1, }, |
| 658 | }; |
| 659 | |
| 660 | static struct { |
| 661 | struct thread_map map; |
| 662 | int threads[1]; |
| 663 | } empty_thread_map = { |
| 664 | .map.nr = 1, |
| 665 | .threads = { -1, }, |
| 666 | }; |
| 667 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 668 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 669 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 670 | { |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 671 | if (cpus == NULL) { |
| 672 | /* Work around old compiler warnings about strict aliasing */ |
| 673 | cpus = &empty_cpu_map.map; |
| 674 | } |
| 675 | |
| 676 | if (threads == NULL) |
| 677 | threads = &empty_thread_map.map; |
| 678 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 679 | return __perf_evsel__open(evsel, cpus, threads); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 680 | } |
| 681 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 682 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 683 | struct cpu_map *cpus) |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 684 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 685 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map); |
Arnaldo Carvalho de Melo | 0252208 | 2011-01-04 11:55:27 -0200 | [diff] [blame] | 686 | } |
| 687 | |
Arnaldo Carvalho de Melo | f08199d | 2011-01-11 23:42:19 -0200 | [diff] [blame] | 688 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 689 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 690 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 691 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads); |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 692 | } |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 693 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 694 | 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] | 695 | struct perf_sample *sample, |
| 696 | bool swapped) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 697 | { |
| 698 | const u64 *array = event->sample.array; |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 699 | union u64_swap u; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 700 | |
| 701 | array += ((event->header.size - |
| 702 | sizeof(event->header)) / sizeof(u64)) - 1; |
| 703 | |
| 704 | if (type & PERF_SAMPLE_CPU) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 705 | u.val64 = *array; |
| 706 | if (swapped) { |
| 707 | /* undo swap of u64, then swap on individual u32s */ |
| 708 | u.val64 = bswap_64(u.val64); |
| 709 | u.val32[0] = bswap_32(u.val32[0]); |
| 710 | } |
| 711 | |
| 712 | sample->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 713 | array--; |
| 714 | } |
| 715 | |
| 716 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 717 | sample->stream_id = *array; |
| 718 | array--; |
| 719 | } |
| 720 | |
| 721 | if (type & PERF_SAMPLE_ID) { |
| 722 | sample->id = *array; |
| 723 | array--; |
| 724 | } |
| 725 | |
| 726 | if (type & PERF_SAMPLE_TIME) { |
| 727 | sample->time = *array; |
| 728 | array--; |
| 729 | } |
| 730 | |
| 731 | if (type & PERF_SAMPLE_TID) { |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 732 | u.val64 = *array; |
| 733 | if (swapped) { |
| 734 | /* undo swap of u64, then swap on individual u32s */ |
| 735 | u.val64 = bswap_64(u.val64); |
| 736 | u.val32[0] = bswap_32(u.val32[0]); |
| 737 | u.val32[1] = bswap_32(u.val32[1]); |
| 738 | } |
| 739 | |
| 740 | sample->pid = u.val32[0]; |
| 741 | sample->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 742 | } |
| 743 | |
| 744 | return 0; |
| 745 | } |
| 746 | |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 747 | static bool sample_overlap(const union perf_event *event, |
| 748 | const void *offset, u64 size) |
| 749 | { |
| 750 | const void *base = event; |
| 751 | |
| 752 | if (offset + size > base + event->header.size) |
| 753 | return true; |
| 754 | |
| 755 | return false; |
| 756 | } |
| 757 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 758 | 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] | 759 | struct perf_sample *data, bool swapped) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 760 | { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 761 | u64 type = evsel->attr.sample_type; |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 762 | u64 regs_user = evsel->attr.sample_regs_user; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 763 | const u64 *array; |
| 764 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 765 | /* |
| 766 | * used for cross-endian analysis. See git commit 65014ab3 |
| 767 | * for why this goofiness is needed. |
| 768 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 769 | union u64_swap u; |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 770 | |
Robert Richter | f3bda2c | 2011-12-15 17:32:39 +0100 | [diff] [blame] | 771 | memset(data, 0, sizeof(*data)); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 772 | data->cpu = data->pid = data->tid = -1; |
| 773 | data->stream_id = data->id = data->time = -1ULL; |
Naveen N. Rao | a4a03fc | 2012-02-03 22:31:13 +0530 | [diff] [blame] | 774 | data->period = 1; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 775 | |
| 776 | if (event->header.type != PERF_RECORD_SAMPLE) { |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 777 | if (!evsel->attr.sample_id_all) |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 778 | return 0; |
Jiri Olsa | 37073f9 | 2012-05-30 14:23:44 +0200 | [diff] [blame] | 779 | return perf_event__parse_id_sample(event, type, data, swapped); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | array = event->sample.array; |
| 783 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 784 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
Frederic Weisbecker | a285412 | 2011-05-21 19:33:04 +0200 | [diff] [blame] | 785 | return -EFAULT; |
| 786 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 787 | if (type & PERF_SAMPLE_IP) { |
| 788 | data->ip = event->ip.ip; |
| 789 | array++; |
| 790 | } |
| 791 | |
| 792 | if (type & PERF_SAMPLE_TID) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 793 | u.val64 = *array; |
| 794 | if (swapped) { |
| 795 | /* undo swap of u64, then swap on individual u32s */ |
| 796 | u.val64 = bswap_64(u.val64); |
| 797 | u.val32[0] = bswap_32(u.val32[0]); |
| 798 | u.val32[1] = bswap_32(u.val32[1]); |
| 799 | } |
| 800 | |
| 801 | data->pid = u.val32[0]; |
| 802 | data->tid = u.val32[1]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 803 | array++; |
| 804 | } |
| 805 | |
| 806 | if (type & PERF_SAMPLE_TIME) { |
| 807 | data->time = *array; |
| 808 | array++; |
| 809 | } |
| 810 | |
David Ahern | 7cec092 | 2011-05-30 13:08:23 -0600 | [diff] [blame] | 811 | data->addr = 0; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 812 | if (type & PERF_SAMPLE_ADDR) { |
| 813 | data->addr = *array; |
| 814 | array++; |
| 815 | } |
| 816 | |
| 817 | data->id = -1ULL; |
| 818 | if (type & PERF_SAMPLE_ID) { |
| 819 | data->id = *array; |
| 820 | array++; |
| 821 | } |
| 822 | |
| 823 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 824 | data->stream_id = *array; |
| 825 | array++; |
| 826 | } |
| 827 | |
| 828 | if (type & PERF_SAMPLE_CPU) { |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 829 | |
| 830 | u.val64 = *array; |
| 831 | if (swapped) { |
| 832 | /* undo swap of u64, then swap on individual u32s */ |
| 833 | u.val64 = bswap_64(u.val64); |
| 834 | u.val32[0] = bswap_32(u.val32[0]); |
| 835 | } |
| 836 | |
| 837 | data->cpu = u.val32[0]; |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 838 | array++; |
| 839 | } |
| 840 | |
| 841 | if (type & PERF_SAMPLE_PERIOD) { |
| 842 | data->period = *array; |
| 843 | array++; |
| 844 | } |
| 845 | |
| 846 | if (type & PERF_SAMPLE_READ) { |
Masanari Iida | f9d3699 | 2012-01-25 15:20:40 +0100 | [diff] [blame] | 847 | fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n"); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 848 | return -1; |
| 849 | } |
| 850 | |
| 851 | if (type & PERF_SAMPLE_CALLCHAIN) { |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 852 | if (sample_overlap(event, array, sizeof(data->callchain->nr))) |
| 853 | return -EFAULT; |
| 854 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 855 | data->callchain = (struct ip_callchain *)array; |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 856 | |
| 857 | if (sample_overlap(event, array, data->callchain->nr)) |
| 858 | return -EFAULT; |
| 859 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 860 | array += 1 + data->callchain->nr; |
| 861 | } |
| 862 | |
| 863 | if (type & PERF_SAMPLE_RAW) { |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 864 | const u64 *pdata; |
| 865 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 866 | u.val64 = *array; |
| 867 | if (WARN_ONCE(swapped, |
| 868 | "Endianness of raw data not corrected!\n")) { |
| 869 | /* undo swap of u64, then swap on individual u32s */ |
| 870 | u.val64 = bswap_64(u.val64); |
| 871 | u.val32[0] = bswap_32(u.val32[0]); |
| 872 | u.val32[1] = bswap_32(u.val32[1]); |
| 873 | } |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 874 | |
| 875 | if (sample_overlap(event, array, sizeof(u32))) |
| 876 | return -EFAULT; |
| 877 | |
David Ahern | 936be50 | 2011-09-06 09:12:26 -0600 | [diff] [blame] | 878 | data->raw_size = u.val32[0]; |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 879 | pdata = (void *) array + sizeof(u32); |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 880 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 881 | if (sample_overlap(event, pdata, data->raw_size)) |
Frederic Weisbecker | 98e1da9 | 2011-05-21 20:08:15 +0200 | [diff] [blame] | 882 | return -EFAULT; |
| 883 | |
Jiri Olsa | 8e303f2 | 2011-09-29 17:05:08 +0200 | [diff] [blame] | 884 | data->raw_data = (void *) pdata; |
Stephane Eranian | fa30c96 | 2012-03-17 23:23:18 +0100 | [diff] [blame] | 885 | |
| 886 | array = (void *)array + data->raw_size + sizeof(u32); |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 887 | } |
| 888 | |
Roberto Agostino Vitillo | b538752 | 2012-02-09 23:21:01 +0100 | [diff] [blame] | 889 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
| 890 | u64 sz; |
| 891 | |
| 892 | data->branch_stack = (struct branch_stack *)array; |
| 893 | array++; /* nr */ |
| 894 | |
| 895 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
| 896 | sz /= sizeof(u64); |
| 897 | array += sz; |
| 898 | } |
Jiri Olsa | 0f6a301 | 2012-08-07 15:20:45 +0200 | [diff] [blame] | 899 | |
| 900 | if (type & PERF_SAMPLE_REGS_USER) { |
| 901 | /* First u64 tells us if we have any regs in sample. */ |
| 902 | u64 avail = *array++; |
| 903 | |
| 904 | if (avail) { |
| 905 | data->user_regs.regs = (u64 *)array; |
| 906 | array += hweight_long(regs_user); |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | if (type & PERF_SAMPLE_STACK_USER) { |
| 911 | u64 size = *array++; |
| 912 | |
| 913 | data->user_stack.offset = ((char *)(array - 1) |
| 914 | - (char *) event); |
| 915 | |
| 916 | if (!size) { |
| 917 | data->user_stack.size = 0; |
| 918 | } else { |
| 919 | data->user_stack.data = (char *)array; |
| 920 | array += size / sizeof(*array); |
| 921 | data->user_stack.size = *array; |
| 922 | } |
| 923 | } |
| 924 | |
Arnaldo Carvalho de Melo | d0dd74e | 2011-01-21 13:46:41 -0200 | [diff] [blame] | 925 | return 0; |
| 926 | } |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 927 | |
| 928 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
| 929 | const struct perf_sample *sample, |
| 930 | bool swapped) |
| 931 | { |
| 932 | u64 *array; |
| 933 | |
| 934 | /* |
| 935 | * used for cross-endian analysis. See git commit 65014ab3 |
| 936 | * for why this goofiness is needed. |
| 937 | */ |
Jiri Olsa | 6a11f92 | 2012-05-16 08:59:04 +0200 | [diff] [blame] | 938 | union u64_swap u; |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 939 | |
| 940 | array = event->sample.array; |
| 941 | |
| 942 | if (type & PERF_SAMPLE_IP) { |
| 943 | event->ip.ip = sample->ip; |
| 944 | array++; |
| 945 | } |
| 946 | |
| 947 | if (type & PERF_SAMPLE_TID) { |
| 948 | u.val32[0] = sample->pid; |
| 949 | u.val32[1] = sample->tid; |
| 950 | if (swapped) { |
| 951 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 952 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 953 | */ |
| 954 | u.val32[0] = bswap_32(u.val32[0]); |
| 955 | u.val32[1] = bswap_32(u.val32[1]); |
| 956 | u.val64 = bswap_64(u.val64); |
| 957 | } |
| 958 | |
| 959 | *array = u.val64; |
| 960 | array++; |
| 961 | } |
| 962 | |
| 963 | if (type & PERF_SAMPLE_TIME) { |
| 964 | *array = sample->time; |
| 965 | array++; |
| 966 | } |
| 967 | |
| 968 | if (type & PERF_SAMPLE_ADDR) { |
| 969 | *array = sample->addr; |
| 970 | array++; |
| 971 | } |
| 972 | |
| 973 | if (type & PERF_SAMPLE_ID) { |
| 974 | *array = sample->id; |
| 975 | array++; |
| 976 | } |
| 977 | |
| 978 | if (type & PERF_SAMPLE_STREAM_ID) { |
| 979 | *array = sample->stream_id; |
| 980 | array++; |
| 981 | } |
| 982 | |
| 983 | if (type & PERF_SAMPLE_CPU) { |
| 984 | u.val32[0] = sample->cpu; |
| 985 | if (swapped) { |
| 986 | /* |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 987 | * Inverse of what is done in perf_evsel__parse_sample |
Andrew Vagin | 74eec26 | 2011-11-28 12:03:31 +0300 | [diff] [blame] | 988 | */ |
| 989 | u.val32[0] = bswap_32(u.val32[0]); |
| 990 | u.val64 = bswap_64(u.val64); |
| 991 | } |
| 992 | *array = u.val64; |
| 993 | array++; |
| 994 | } |
| 995 | |
| 996 | if (type & PERF_SAMPLE_PERIOD) { |
| 997 | *array = sample->period; |
| 998 | array++; |
| 999 | } |
| 1000 | |
| 1001 | return 0; |
| 1002 | } |