Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 2 | /* |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 3 | * Copyright (C) 2009-2011, Frederic Weisbecker <fweisbec@gmail.com> |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 4 | * |
| 5 | * Handle the callchains from the stream in an ad-hoc radix tree and then |
| 6 | * sort them in an rbtree. |
| 7 | * |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 8 | * Using a radix for code path provides a fast retrieval and factorizes |
| 9 | * memory use. Also that lets us use the paths in a hierarchical graph view. |
| 10 | * |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 11 | */ |
| 12 | |
Arnaldo Carvalho de Melo | fd20e81 | 2017-04-17 15:23:08 -0300 | [diff] [blame] | 13 | #include <inttypes.h> |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 14 | #include <stdlib.h> |
| 15 | #include <stdio.h> |
| 16 | #include <stdbool.h> |
| 17 | #include <errno.h> |
Frederic Weisbecker | c0a8865 | 2009-08-09 04:19:15 +0200 | [diff] [blame] | 18 | #include <math.h> |
Arnaldo Carvalho de Melo | 8520a98 | 2019-08-29 16:18:59 -0300 | [diff] [blame] | 19 | #include <linux/string.h> |
Arnaldo Carvalho de Melo | 7f7c536 | 2019-07-04 11:32:27 -0300 | [diff] [blame] | 20 | #include <linux/zalloc.h> |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 21 | |
Frederic Weisbecker | b965bb4 | 2014-01-14 16:37:15 +0100 | [diff] [blame] | 22 | #include "asm/bug.h" |
| 23 | |
Arnaldo Carvalho de Melo | 185bcb9 | 2019-08-22 17:11:39 -0300 | [diff] [blame] | 24 | #include "debug.h" |
Arnaldo Carvalho de Melo | 4a3cec8 | 2019-08-30 11:11:01 -0300 | [diff] [blame] | 25 | #include "dso.h" |
Arnaldo Carvalho de Melo | ea49e01 | 2019-09-18 11:36:13 -0300 | [diff] [blame] | 26 | #include "event.h" |
Andi Kleen | 99571ab | 2013-07-18 15:33:57 -0700 | [diff] [blame] | 27 | #include "hist.h" |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 28 | #include "sort.h" |
| 29 | #include "machine.h" |
Arnaldo Carvalho de Melo | 1101f69 | 2019-01-27 13:42:37 +0100 | [diff] [blame] | 30 | #include "map.h" |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 31 | #include "callchain.h" |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 32 | #include "branch.h" |
Arnaldo Carvalho de Melo | 7cadca8 | 2019-01-27 14:10:31 +0100 | [diff] [blame] | 33 | #include "symbol.h" |
Arnaldo Carvalho de Melo | c1a604d | 2019-08-29 15:20:59 -0300 | [diff] [blame] | 34 | #include "../perf.h" |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 35 | |
Arnaldo Carvalho de Melo | 56e2e05 | 2017-04-19 18:38:33 -0300 | [diff] [blame] | 36 | #define CALLCHAIN_PARAM_DEFAULT \ |
| 37 | .mode = CHAIN_GRAPH_ABS, \ |
| 38 | .min_percent = 0.5, \ |
| 39 | .order = ORDER_CALLEE, \ |
| 40 | .key = CCKEY_FUNCTION, \ |
| 41 | .value = CCVAL_PERCENT, \ |
| 42 | |
| 43 | struct callchain_param callchain_param = { |
| 44 | CALLCHAIN_PARAM_DEFAULT |
| 45 | }; |
| 46 | |
Arnaldo Carvalho de Melo | eabad8c | 2018-01-15 16:48:46 -0300 | [diff] [blame] | 47 | /* |
| 48 | * Are there any events usind DWARF callchains? |
| 49 | * |
| 50 | * I.e. |
| 51 | * |
| 52 | * -e cycles/call-graph=dwarf/ |
| 53 | */ |
| 54 | bool dwarf_callchain_users; |
| 55 | |
Arnaldo Carvalho de Melo | 56e2e05 | 2017-04-19 18:38:33 -0300 | [diff] [blame] | 56 | struct callchain_param callchain_param_default = { |
| 57 | CALLCHAIN_PARAM_DEFAULT |
| 58 | }; |
| 59 | |
Namhyung Kim | 4726064 | 2012-05-31 14:43:26 +0900 | [diff] [blame] | 60 | __thread struct callchain_cursor callchain_cursor; |
| 61 | |
Kan Liang | c3a6a8c | 2015-08-04 04:30:20 -0400 | [diff] [blame] | 62 | int parse_callchain_record_opt(const char *arg, struct callchain_param *param) |
Namhyung Kim | f7f084f | 2014-09-23 10:01:42 +0900 | [diff] [blame] | 63 | { |
Kan Liang | 076a30c | 2015-08-06 15:44:52 -0400 | [diff] [blame] | 64 | return parse_callchain_record(arg, param); |
Namhyung Kim | f7f084f | 2014-09-23 10:01:42 +0900 | [diff] [blame] | 65 | } |
| 66 | |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 67 | static int parse_callchain_mode(const char *value) |
| 68 | { |
| 69 | if (!strncmp(value, "graph", strlen(value))) { |
| 70 | callchain_param.mode = CHAIN_GRAPH_ABS; |
| 71 | return 0; |
| 72 | } |
| 73 | if (!strncmp(value, "flat", strlen(value))) { |
| 74 | callchain_param.mode = CHAIN_FLAT; |
| 75 | return 0; |
| 76 | } |
| 77 | if (!strncmp(value, "fractal", strlen(value))) { |
| 78 | callchain_param.mode = CHAIN_GRAPH_REL; |
| 79 | return 0; |
| 80 | } |
Namhyung Kim | 26e7792 | 2015-11-09 14:45:37 +0900 | [diff] [blame] | 81 | if (!strncmp(value, "folded", strlen(value))) { |
| 82 | callchain_param.mode = CHAIN_FOLDED; |
| 83 | return 0; |
| 84 | } |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 85 | return -1; |
| 86 | } |
| 87 | |
| 88 | static int parse_callchain_order(const char *value) |
| 89 | { |
| 90 | if (!strncmp(value, "caller", strlen(value))) { |
| 91 | callchain_param.order = ORDER_CALLER; |
Namhyung Kim | 792aeaf | 2015-10-22 16:45:46 +0900 | [diff] [blame] | 92 | callchain_param.order_set = true; |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 93 | return 0; |
| 94 | } |
| 95 | if (!strncmp(value, "callee", strlen(value))) { |
| 96 | callchain_param.order = ORDER_CALLEE; |
Namhyung Kim | 792aeaf | 2015-10-22 16:45:46 +0900 | [diff] [blame] | 97 | callchain_param.order_set = true; |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 98 | return 0; |
| 99 | } |
| 100 | return -1; |
| 101 | } |
| 102 | |
| 103 | static int parse_callchain_sort_key(const char *value) |
| 104 | { |
| 105 | if (!strncmp(value, "function", strlen(value))) { |
| 106 | callchain_param.key = CCKEY_FUNCTION; |
| 107 | return 0; |
| 108 | } |
| 109 | if (!strncmp(value, "address", strlen(value))) { |
| 110 | callchain_param.key = CCKEY_ADDRESS; |
| 111 | return 0; |
| 112 | } |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 113 | if (!strncmp(value, "srcline", strlen(value))) { |
| 114 | callchain_param.key = CCKEY_SRCLINE; |
| 115 | return 0; |
| 116 | } |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 117 | if (!strncmp(value, "branch", strlen(value))) { |
| 118 | callchain_param.branch_callstack = 1; |
| 119 | return 0; |
| 120 | } |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 121 | return -1; |
| 122 | } |
| 123 | |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 124 | static int parse_callchain_value(const char *value) |
| 125 | { |
| 126 | if (!strncmp(value, "percent", strlen(value))) { |
| 127 | callchain_param.value = CCVAL_PERCENT; |
| 128 | return 0; |
| 129 | } |
| 130 | if (!strncmp(value, "period", strlen(value))) { |
| 131 | callchain_param.value = CCVAL_PERIOD; |
| 132 | return 0; |
| 133 | } |
| 134 | if (!strncmp(value, "count", strlen(value))) { |
| 135 | callchain_param.value = CCVAL_COUNT; |
| 136 | return 0; |
| 137 | } |
| 138 | return -1; |
| 139 | } |
| 140 | |
Arnaldo Carvalho de Melo | 56e2e05 | 2017-04-19 18:38:33 -0300 | [diff] [blame] | 141 | static int get_stack_size(const char *str, unsigned long *_size) |
| 142 | { |
| 143 | char *endptr; |
| 144 | unsigned long size; |
| 145 | unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); |
| 146 | |
| 147 | size = strtoul(str, &endptr, 0); |
| 148 | |
| 149 | do { |
| 150 | if (*endptr) |
| 151 | break; |
| 152 | |
| 153 | size = round_up(size, sizeof(u64)); |
| 154 | if (!size || size > max_size) |
| 155 | break; |
| 156 | |
| 157 | *_size = size; |
| 158 | return 0; |
| 159 | |
| 160 | } while (0); |
| 161 | |
| 162 | pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", |
| 163 | max_size, str); |
| 164 | return -1; |
| 165 | } |
| 166 | |
Namhyung Kim | a2c10d3 | 2015-10-22 15:28:49 +0900 | [diff] [blame] | 167 | static int |
| 168 | __parse_callchain_report_opt(const char *arg, bool allow_record_opt) |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 169 | { |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 170 | char *tok; |
Arnaldo Carvalho de Melo | dadafc3 | 2017-04-05 11:38:10 -0300 | [diff] [blame] | 171 | char *endptr, *saveptr = NULL; |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 172 | bool minpcnt_set = false; |
Namhyung Kim | a2c10d3 | 2015-10-22 15:28:49 +0900 | [diff] [blame] | 173 | bool record_opt_set = false; |
| 174 | bool try_stack_size = false; |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 175 | |
Arnaldo Carvalho de Melo | 30234f0 | 2016-04-18 11:53:07 -0300 | [diff] [blame] | 176 | callchain_param.enabled = true; |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 177 | symbol_conf.use_callchain = true; |
| 178 | |
| 179 | if (!arg) |
| 180 | return 0; |
| 181 | |
Arnaldo Carvalho de Melo | dadafc3 | 2017-04-05 11:38:10 -0300 | [diff] [blame] | 182 | while ((tok = strtok_r((char *)arg, ",", &saveptr)) != NULL) { |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 183 | if (!strncmp(tok, "none", strlen(tok))) { |
| 184 | callchain_param.mode = CHAIN_NONE; |
Arnaldo Carvalho de Melo | 30234f0 | 2016-04-18 11:53:07 -0300 | [diff] [blame] | 185 | callchain_param.enabled = false; |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 186 | symbol_conf.use_callchain = false; |
| 187 | return 0; |
| 188 | } |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 189 | |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 190 | if (!parse_callchain_mode(tok) || |
| 191 | !parse_callchain_order(tok) || |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 192 | !parse_callchain_sort_key(tok) || |
| 193 | !parse_callchain_value(tok)) { |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 194 | /* parsing ok - move on to the next */ |
Namhyung Kim | a2c10d3 | 2015-10-22 15:28:49 +0900 | [diff] [blame] | 195 | try_stack_size = false; |
| 196 | goto next; |
| 197 | } else if (allow_record_opt && !record_opt_set) { |
| 198 | if (parse_callchain_record(tok, &callchain_param)) |
| 199 | goto try_numbers; |
| 200 | |
| 201 | /* assume that number followed by 'dwarf' is stack size */ |
| 202 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
| 203 | try_stack_size = true; |
| 204 | |
| 205 | record_opt_set = true; |
| 206 | goto next; |
| 207 | } |
| 208 | |
| 209 | try_numbers: |
| 210 | if (try_stack_size) { |
| 211 | unsigned long size = 0; |
| 212 | |
| 213 | if (get_stack_size(tok, &size) < 0) |
| 214 | return -1; |
| 215 | callchain_param.dump_size = size; |
| 216 | try_stack_size = false; |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 217 | } else if (!minpcnt_set) { |
| 218 | /* try to get the min percent */ |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 219 | callchain_param.min_percent = strtod(tok, &endptr); |
| 220 | if (tok == endptr) |
| 221 | return -1; |
| 222 | minpcnt_set = true; |
| 223 | } else { |
| 224 | /* try print limit at last */ |
| 225 | callchain_param.print_limit = strtoul(tok, &endptr, 0); |
| 226 | if (tok == endptr) |
| 227 | return -1; |
| 228 | } |
Namhyung Kim | a2c10d3 | 2015-10-22 15:28:49 +0900 | [diff] [blame] | 229 | next: |
Namhyung Kim | e8232f1 | 2014-08-14 15:01:38 +0900 | [diff] [blame] | 230 | arg = NULL; |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 231 | } |
| 232 | |
Don Zickus | cff6bb4 | 2014-04-07 14:55:24 -0400 | [diff] [blame] | 233 | if (callchain_register_param(&callchain_param) < 0) { |
| 234 | pr_err("Can't register callchain params\n"); |
| 235 | return -1; |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | |
Namhyung Kim | a2c10d3 | 2015-10-22 15:28:49 +0900 | [diff] [blame] | 240 | int parse_callchain_report_opt(const char *arg) |
| 241 | { |
| 242 | return __parse_callchain_report_opt(arg, false); |
| 243 | } |
| 244 | |
| 245 | int parse_callchain_top_opt(const char *arg) |
| 246 | { |
| 247 | return __parse_callchain_report_opt(arg, true); |
| 248 | } |
| 249 | |
Arnaldo Carvalho de Melo | 56e2e05 | 2017-04-19 18:38:33 -0300 | [diff] [blame] | 250 | int parse_callchain_record(const char *arg, struct callchain_param *param) |
| 251 | { |
| 252 | char *tok, *name, *saveptr = NULL; |
| 253 | char *buf; |
| 254 | int ret = -1; |
| 255 | |
| 256 | /* We need buffer that we know we can write to. */ |
| 257 | buf = malloc(strlen(arg) + 1); |
| 258 | if (!buf) |
| 259 | return -ENOMEM; |
| 260 | |
| 261 | strcpy(buf, arg); |
| 262 | |
| 263 | tok = strtok_r((char *)buf, ",", &saveptr); |
| 264 | name = tok ? : (char *)buf; |
| 265 | |
| 266 | do { |
| 267 | /* Framepointer style */ |
| 268 | if (!strncmp(name, "fp", sizeof("fp"))) { |
| 269 | if (!strtok_r(NULL, ",", &saveptr)) { |
| 270 | param->record_mode = CALLCHAIN_FP; |
| 271 | ret = 0; |
| 272 | } else |
| 273 | pr_err("callchain: No more arguments " |
| 274 | "needed for --call-graph fp\n"); |
| 275 | break; |
| 276 | |
| 277 | /* Dwarf style */ |
| 278 | } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { |
| 279 | const unsigned long default_stack_dump_size = 8192; |
| 280 | |
| 281 | ret = 0; |
| 282 | param->record_mode = CALLCHAIN_DWARF; |
| 283 | param->dump_size = default_stack_dump_size; |
Arnaldo Carvalho de Melo | eabad8c | 2018-01-15 16:48:46 -0300 | [diff] [blame] | 284 | dwarf_callchain_users = true; |
Arnaldo Carvalho de Melo | 56e2e05 | 2017-04-19 18:38:33 -0300 | [diff] [blame] | 285 | |
| 286 | tok = strtok_r(NULL, ",", &saveptr); |
| 287 | if (tok) { |
| 288 | unsigned long size = 0; |
| 289 | |
| 290 | ret = get_stack_size(tok, &size); |
| 291 | param->dump_size = size; |
| 292 | } |
| 293 | } else if (!strncmp(name, "lbr", sizeof("lbr"))) { |
| 294 | if (!strtok_r(NULL, ",", &saveptr)) { |
| 295 | param->record_mode = CALLCHAIN_LBR; |
| 296 | ret = 0; |
| 297 | } else |
| 298 | pr_err("callchain: No more arguments " |
| 299 | "needed for --call-graph lbr\n"); |
| 300 | break; |
| 301 | } else { |
| 302 | pr_err("callchain: Unknown --call-graph option " |
| 303 | "value: %s\n", arg); |
| 304 | break; |
| 305 | } |
| 306 | |
| 307 | } while (0); |
| 308 | |
| 309 | free(buf); |
| 310 | return ret; |
| 311 | } |
| 312 | |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 313 | int perf_callchain_config(const char *var, const char *value) |
| 314 | { |
| 315 | char *endptr; |
| 316 | |
Arnaldo Carvalho de Melo | 8e99b6d | 2017-07-20 15:27:39 -0300 | [diff] [blame] | 317 | if (!strstarts(var, "call-graph.")) |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 318 | return 0; |
| 319 | var += sizeof("call-graph.") - 1; |
| 320 | |
| 321 | if (!strcmp(var, "record-mode")) |
Kan Liang | c3a6a8c | 2015-08-04 04:30:20 -0400 | [diff] [blame] | 322 | return parse_callchain_record_opt(value, &callchain_param); |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 323 | if (!strcmp(var, "dump-size")) { |
| 324 | unsigned long size = 0; |
| 325 | int ret; |
| 326 | |
| 327 | ret = get_stack_size(value, &size); |
| 328 | callchain_param.dump_size = size; |
| 329 | |
| 330 | return ret; |
| 331 | } |
Mengting Zhang | 9789e7e | 2017-09-23 16:18:14 +0800 | [diff] [blame] | 332 | if (!strcmp(var, "print-type")){ |
| 333 | int ret; |
| 334 | ret = parse_callchain_mode(value); |
| 335 | if (ret == -1) |
| 336 | pr_err("Invalid callchain mode: %s\n", value); |
| 337 | return ret; |
| 338 | } |
| 339 | if (!strcmp(var, "order")){ |
| 340 | int ret; |
| 341 | ret = parse_callchain_order(value); |
| 342 | if (ret == -1) |
| 343 | pr_err("Invalid callchain order: %s\n", value); |
| 344 | return ret; |
| 345 | } |
| 346 | if (!strcmp(var, "sort-key")){ |
| 347 | int ret; |
| 348 | ret = parse_callchain_sort_key(value); |
| 349 | if (ret == -1) |
| 350 | pr_err("Invalid callchain sort key: %s\n", value); |
| 351 | return ret; |
| 352 | } |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 353 | if (!strcmp(var, "threshold")) { |
| 354 | callchain_param.min_percent = strtod(value, &endptr); |
Arnaldo Carvalho de Melo | ecc4c56 | 2017-01-24 13:44:10 -0300 | [diff] [blame] | 355 | if (value == endptr) { |
| 356 | pr_err("Invalid callchain threshold: %s\n", value); |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 357 | return -1; |
Arnaldo Carvalho de Melo | ecc4c56 | 2017-01-24 13:44:10 -0300 | [diff] [blame] | 358 | } |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 359 | } |
| 360 | if (!strcmp(var, "print-limit")) { |
| 361 | callchain_param.print_limit = strtod(value, &endptr); |
Arnaldo Carvalho de Melo | ecc4c56 | 2017-01-24 13:44:10 -0300 | [diff] [blame] | 362 | if (value == endptr) { |
| 363 | pr_err("Invalid callchain print limit: %s\n", value); |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 364 | return -1; |
Arnaldo Carvalho de Melo | ecc4c56 | 2017-01-24 13:44:10 -0300 | [diff] [blame] | 365 | } |
Namhyung Kim | 2b9240c | 2014-09-23 10:01:43 +0900 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 371 | static void |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 372 | rb_insert_callchain(struct rb_root *root, struct callchain_node *chain, |
| 373 | enum chain_mode mode) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 374 | { |
| 375 | struct rb_node **p = &root->rb_node; |
| 376 | struct rb_node *parent = NULL; |
| 377 | struct callchain_node *rnode; |
Frederic Weisbecker | f08c315 | 2011-01-14 04:51:59 +0100 | [diff] [blame] | 378 | u64 chain_cumul = callchain_cumul_hits(chain); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 379 | |
| 380 | while (*p) { |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 381 | u64 rnode_cumul; |
| 382 | |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 383 | parent = *p; |
| 384 | rnode = rb_entry(parent, struct callchain_node, rb_node); |
Frederic Weisbecker | f08c315 | 2011-01-14 04:51:59 +0100 | [diff] [blame] | 385 | rnode_cumul = callchain_cumul_hits(rnode); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 386 | |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 387 | switch (mode) { |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 388 | case CHAIN_FLAT: |
Namhyung Kim | 26e7792 | 2015-11-09 14:45:37 +0900 | [diff] [blame] | 389 | case CHAIN_FOLDED: |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 390 | if (rnode->hit < chain->hit) |
| 391 | p = &(*p)->rb_left; |
| 392 | else |
| 393 | p = &(*p)->rb_right; |
| 394 | break; |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 395 | case CHAIN_GRAPH_ABS: /* Falldown */ |
| 396 | case CHAIN_GRAPH_REL: |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 397 | if (rnode_cumul < chain_cumul) |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 398 | p = &(*p)->rb_left; |
| 399 | else |
| 400 | p = &(*p)->rb_right; |
| 401 | break; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 402 | case CHAIN_NONE: |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 403 | default: |
| 404 | break; |
| 405 | } |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | rb_link_node(&chain->rb_node, parent, p); |
| 409 | rb_insert_color(&chain->rb_node, root); |
| 410 | } |
| 411 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 412 | static void |
| 413 | __sort_chain_flat(struct rb_root *rb_root, struct callchain_node *node, |
| 414 | u64 min_hit) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 415 | { |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 416 | struct rb_node *n; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 417 | struct callchain_node *child; |
| 418 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 419 | n = rb_first(&node->rb_root_in); |
| 420 | while (n) { |
| 421 | child = rb_entry(n, struct callchain_node, rb_node_in); |
| 422 | n = rb_next(n); |
| 423 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 424 | __sort_chain_flat(rb_root, child, min_hit); |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 425 | } |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 426 | |
Frederic Weisbecker | c20ab37 | 2009-07-02 20:14:33 +0200 | [diff] [blame] | 427 | if (node->hit && node->hit >= min_hit) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 428 | rb_insert_callchain(rb_root, node, CHAIN_FLAT); |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 429 | } |
| 430 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 431 | /* |
| 432 | * Once we get every callchains from the stream, we can now |
| 433 | * sort them by hit |
| 434 | */ |
| 435 | static void |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 436 | sort_chain_flat(struct rb_root *rb_root, struct callchain_root *root, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 437 | u64 min_hit, struct callchain_param *param __maybe_unused) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 438 | { |
Namhyung Kim | 0356218 | 2015-11-26 16:08:18 +0900 | [diff] [blame] | 439 | *rb_root = RB_ROOT; |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 440 | __sort_chain_flat(rb_root, &root->node, min_hit); |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | static void __sort_chain_graph_abs(struct callchain_node *node, |
| 444 | u64 min_hit) |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 445 | { |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 446 | struct rb_node *n; |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 447 | struct callchain_node *child; |
| 448 | |
| 449 | node->rb_root = RB_ROOT; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 450 | n = rb_first(&node->rb_root_in); |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 451 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 452 | while (n) { |
| 453 | child = rb_entry(n, struct callchain_node, rb_node_in); |
| 454 | n = rb_next(n); |
| 455 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 456 | __sort_chain_graph_abs(child, min_hit); |
Frederic Weisbecker | f08c315 | 2011-01-14 04:51:59 +0100 | [diff] [blame] | 457 | if (callchain_cumul_hits(child) >= min_hit) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 458 | rb_insert_callchain(&node->rb_root, child, |
| 459 | CHAIN_GRAPH_ABS); |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 460 | } |
| 461 | } |
| 462 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 463 | static void |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 464 | sort_chain_graph_abs(struct rb_root *rb_root, struct callchain_root *chain_root, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 465 | u64 min_hit, struct callchain_param *param __maybe_unused) |
Frederic Weisbecker | 4eb3e47 | 2009-07-02 17:58:21 +0200 | [diff] [blame] | 466 | { |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 467 | __sort_chain_graph_abs(&chain_root->node, min_hit); |
| 468 | rb_root->rb_node = chain_root->node.rb_root.rb_node; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 469 | } |
| 470 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 471 | static void __sort_chain_graph_rel(struct callchain_node *node, |
| 472 | double min_percent) |
| 473 | { |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 474 | struct rb_node *n; |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 475 | struct callchain_node *child; |
| 476 | u64 min_hit; |
| 477 | |
| 478 | node->rb_root = RB_ROOT; |
Frederic Weisbecker | c0a8865 | 2009-08-09 04:19:15 +0200 | [diff] [blame] | 479 | min_hit = ceil(node->children_hit * min_percent); |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 480 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 481 | n = rb_first(&node->rb_root_in); |
| 482 | while (n) { |
| 483 | child = rb_entry(n, struct callchain_node, rb_node_in); |
| 484 | n = rb_next(n); |
| 485 | |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 486 | __sort_chain_graph_rel(child, min_percent); |
Frederic Weisbecker | f08c315 | 2011-01-14 04:51:59 +0100 | [diff] [blame] | 487 | if (callchain_cumul_hits(child) >= min_hit) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 488 | rb_insert_callchain(&node->rb_root, child, |
| 489 | CHAIN_GRAPH_REL); |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | static void |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 494 | sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_root *chain_root, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 495 | u64 min_hit __maybe_unused, struct callchain_param *param) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 496 | { |
Frederic Weisbecker | d2009c5 | 2010-08-22 20:05:22 +0200 | [diff] [blame] | 497 | __sort_chain_graph_rel(&chain_root->node, param->min_percent / 100.0); |
| 498 | rb_root->rb_node = chain_root->node.rb_root.rb_node; |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 499 | } |
| 500 | |
Frederic Weisbecker | 16537f1 | 2011-01-14 04:52:00 +0100 | [diff] [blame] | 501 | int callchain_register_param(struct callchain_param *param) |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 502 | { |
| 503 | switch (param->mode) { |
| 504 | case CHAIN_GRAPH_ABS: |
| 505 | param->sort = sort_chain_graph_abs; |
| 506 | break; |
| 507 | case CHAIN_GRAPH_REL: |
| 508 | param->sort = sort_chain_graph_rel; |
| 509 | break; |
| 510 | case CHAIN_FLAT: |
Namhyung Kim | 26e7792 | 2015-11-09 14:45:37 +0900 | [diff] [blame] | 511 | case CHAIN_FOLDED: |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 512 | param->sort = sort_chain_flat; |
| 513 | break; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 514 | case CHAIN_NONE: |
Frederic Weisbecker | 805d127 | 2009-07-05 07:39:21 +0200 | [diff] [blame] | 515 | default: |
| 516 | return -1; |
| 517 | } |
| 518 | return 0; |
| 519 | } |
| 520 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 521 | /* |
| 522 | * Create a child for a parent. If inherit_children, then the new child |
| 523 | * will become the new parent of it's parent children |
| 524 | */ |
| 525 | static struct callchain_node * |
| 526 | create_child(struct callchain_node *parent, bool inherit_children) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 527 | { |
| 528 | struct callchain_node *new; |
| 529 | |
Arnaldo Carvalho de Melo | cdd5b75b | 2010-05-10 10:56:50 -0300 | [diff] [blame] | 530 | new = zalloc(sizeof(*new)); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 531 | if (!new) { |
| 532 | perror("not enough memory to create child for code path tree"); |
| 533 | return NULL; |
| 534 | } |
| 535 | new->parent = parent; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 536 | INIT_LIST_HEAD(&new->val); |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 537 | INIT_LIST_HEAD(&new->parent_val); |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 538 | |
| 539 | if (inherit_children) { |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 540 | struct rb_node *n; |
| 541 | struct callchain_node *child; |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 542 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 543 | new->rb_root_in = parent->rb_root_in; |
| 544 | parent->rb_root_in = RB_ROOT; |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 545 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 546 | n = rb_first(&new->rb_root_in); |
| 547 | while (n) { |
| 548 | child = rb_entry(n, struct callchain_node, rb_node_in); |
| 549 | child->parent = new; |
| 550 | n = rb_next(n); |
| 551 | } |
| 552 | |
| 553 | /* make it the first child */ |
| 554 | rb_link_node(&new->rb_node_in, NULL, &parent->rb_root_in.rb_node); |
| 555 | rb_insert_color(&new->rb_node_in, &parent->rb_root_in); |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 556 | } |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 557 | |
| 558 | return new; |
| 559 | } |
| 560 | |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 561 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 562 | /* |
| 563 | * Fill the node with callchain values |
| 564 | */ |
Namhyung Kim | 8451cbb | 2016-02-16 23:08:21 +0900 | [diff] [blame] | 565 | static int |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 566 | fill_node(struct callchain_node *node, struct callchain_cursor *cursor) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 567 | { |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 568 | struct callchain_cursor_node *cursor_node; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 569 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 570 | node->val_nr = cursor->nr - cursor->pos; |
| 571 | if (!node->val_nr) |
| 572 | pr_warning("Warning: empty node in callchain tree\n"); |
| 573 | |
| 574 | cursor_node = callchain_cursor_current(cursor); |
| 575 | |
| 576 | while (cursor_node) { |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 577 | struct callchain_list *call; |
| 578 | |
Arnaldo Carvalho de Melo | cdd5b75b | 2010-05-10 10:56:50 -0300 | [diff] [blame] | 579 | call = zalloc(sizeof(*call)); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 580 | if (!call) { |
| 581 | perror("not enough memory for the code path tree"); |
Namhyung Kim | 8451cbb | 2016-02-16 23:08:21 +0900 | [diff] [blame] | 582 | return -1; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 583 | } |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 584 | call->ip = cursor_node->ip; |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 585 | call->ms = cursor_node->ms; |
| 586 | map__get(call->ms.map); |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 587 | call->srcline = cursor_node->srcline; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 588 | |
| 589 | if (cursor_node->branch) { |
| 590 | call->branch_count = 1; |
| 591 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 592 | if (cursor_node->branch_from) { |
| 593 | /* |
| 594 | * branch_from is set with value somewhere else |
| 595 | * to imply it's "to" of a branch. |
| 596 | */ |
| 597 | call->brtype_stat.branch_to = true; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 598 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 599 | if (cursor_node->branch_flags.predicted) |
| 600 | call->predicted_count = 1; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 601 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 602 | if (cursor_node->branch_flags.abort) |
| 603 | call->abort_count = 1; |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 604 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 605 | branch_type_count(&call->brtype_stat, |
| 606 | &cursor_node->branch_flags, |
| 607 | cursor_node->branch_from, |
| 608 | cursor_node->ip); |
| 609 | } else { |
| 610 | /* |
| 611 | * It's "from" of a branch |
| 612 | */ |
| 613 | call->brtype_stat.branch_to = false; |
| 614 | call->cycles_count = |
| 615 | cursor_node->branch_flags.cycles; |
| 616 | call->iter_count = cursor_node->nr_loop_iter; |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 617 | call->iter_cycles = cursor_node->iter_cycles; |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 618 | } |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 619 | } |
| 620 | |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 621 | list_add_tail(&call->list, &node->val); |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 622 | |
| 623 | callchain_cursor_advance(cursor); |
| 624 | cursor_node = callchain_cursor_current(cursor); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 625 | } |
Namhyung Kim | 8451cbb | 2016-02-16 23:08:21 +0900 | [diff] [blame] | 626 | return 0; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 627 | } |
| 628 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 629 | static struct callchain_node * |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 630 | add_child(struct callchain_node *parent, |
| 631 | struct callchain_cursor *cursor, |
| 632 | u64 period) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 633 | { |
| 634 | struct callchain_node *new; |
| 635 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 636 | new = create_child(parent, false); |
Namhyung Kim | 7565bd39 | 2016-02-16 23:08:20 +0900 | [diff] [blame] | 637 | if (new == NULL) |
| 638 | return NULL; |
| 639 | |
Namhyung Kim | 8451cbb | 2016-02-16 23:08:21 +0900 | [diff] [blame] | 640 | if (fill_node(new, cursor) < 0) { |
| 641 | struct callchain_list *call, *tmp; |
| 642 | |
| 643 | list_for_each_entry_safe(call, tmp, &new->val, list) { |
Arnaldo Carvalho de Melo | e56fbc9 | 2019-07-04 12:13:46 -0300 | [diff] [blame] | 644 | list_del_init(&call->list); |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 645 | map__zput(call->ms.map); |
Namhyung Kim | 8451cbb | 2016-02-16 23:08:21 +0900 | [diff] [blame] | 646 | free(call); |
| 647 | } |
| 648 | free(new); |
| 649 | return NULL; |
| 650 | } |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 651 | |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 652 | new->children_hit = 0; |
Frederic Weisbecker | 108553e | 2010-07-08 03:41:46 +0200 | [diff] [blame] | 653 | new->hit = period; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 654 | new->children_count = 0; |
| 655 | new->count = 1; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 656 | return new; |
| 657 | } |
| 658 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 659 | enum match_result { |
| 660 | MATCH_ERROR = -1, |
| 661 | MATCH_EQ, |
| 662 | MATCH_LT, |
| 663 | MATCH_GT, |
| 664 | }; |
| 665 | |
Milian Wolff | cbe50f6 | 2017-10-09 22:33:00 +0200 | [diff] [blame] | 666 | static enum match_result match_chain_strings(const char *left, |
| 667 | const char *right) |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 668 | { |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 669 | enum match_result ret = MATCH_EQ; |
| 670 | int cmp; |
| 671 | |
| 672 | if (left && right) |
| 673 | cmp = strcmp(left, right); |
| 674 | else if (!left && right) |
| 675 | cmp = 1; |
| 676 | else if (left && !right) |
| 677 | cmp = -1; |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 678 | else |
Milian Wolff | cbe50f6 | 2017-10-09 22:33:00 +0200 | [diff] [blame] | 679 | return MATCH_ERROR; |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 680 | |
| 681 | if (cmp != 0) |
| 682 | ret = cmp < 0 ? MATCH_LT : MATCH_GT; |
| 683 | |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 684 | return ret; |
| 685 | } |
| 686 | |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 687 | /* |
| 688 | * We need to always use relative addresses because we're aggregating |
| 689 | * callchains from multiple threads, i.e. different address spaces, so |
| 690 | * comparing absolute addresses make no sense as a symbol in a DSO may end up |
| 691 | * in a different address when used in a different binary or even the same |
| 692 | * binary but with some sort of address randomization technique, thus we need |
| 693 | * to compare just relative addresses. -acme |
| 694 | */ |
| 695 | static enum match_result match_chain_dso_addresses(struct map *left_map, u64 left_ip, |
| 696 | struct map *right_map, u64 right_ip) |
| 697 | { |
| 698 | struct dso *left_dso = left_map ? left_map->dso : NULL; |
| 699 | struct dso *right_dso = right_map ? right_map->dso : NULL; |
| 700 | |
| 701 | if (left_dso != right_dso) |
| 702 | return left_dso < right_dso ? MATCH_LT : MATCH_GT; |
| 703 | |
| 704 | if (left_ip != right_ip) |
| 705 | return left_ip < right_ip ? MATCH_LT : MATCH_GT; |
| 706 | |
| 707 | return MATCH_EQ; |
| 708 | } |
| 709 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 710 | static enum match_result match_chain(struct callchain_cursor_node *node, |
| 711 | struct callchain_list *cnode) |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 712 | { |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 713 | enum match_result match = MATCH_ERROR; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 714 | |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 715 | switch (callchain_param.key) { |
| 716 | case CCKEY_SRCLINE: |
| 717 | match = match_chain_strings(cnode->srcline, node->srcline); |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 718 | if (match != MATCH_ERROR) |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 719 | break; |
| 720 | /* otherwise fall-back to symbol-based comparison below */ |
| 721 | __fallthrough; |
| 722 | case CCKEY_FUNCTION: |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 723 | if (node->ms.sym && cnode->ms.sym) { |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 724 | /* |
| 725 | * Compare inlined frames based on their symbol name |
| 726 | * because different inlined frames will have the same |
| 727 | * symbol start. Otherwise do a faster comparison based |
| 728 | * on the symbol start address. |
| 729 | */ |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 730 | if (cnode->ms.sym->inlined || node->ms.sym->inlined) { |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 731 | match = match_chain_strings(cnode->ms.sym->name, |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 732 | node->ms.sym->name); |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 733 | if (match != MATCH_ERROR) |
| 734 | break; |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 735 | } else { |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 736 | match = match_chain_dso_addresses(cnode->ms.map, cnode->ms.sym->start, |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 737 | node->ms.map, node->ms.sym->start); |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 738 | break; |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 739 | } |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 740 | } |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 741 | /* otherwise fall-back to IP-based comparison below */ |
| 742 | __fallthrough; |
| 743 | case CCKEY_ADDRESS: |
| 744 | default: |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 745 | match = match_chain_dso_addresses(cnode->ms.map, cnode->ip, node->ms.map, node->ip); |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 746 | break; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 747 | } |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 748 | |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 749 | if (match == MATCH_EQ && node->branch) { |
| 750 | cnode->branch_count++; |
| 751 | |
| 752 | if (node->branch_from) { |
| 753 | /* |
| 754 | * It's "to" of a branch |
| 755 | */ |
| 756 | cnode->brtype_stat.branch_to = true; |
| 757 | |
| 758 | if (node->branch_flags.predicted) |
| 759 | cnode->predicted_count++; |
| 760 | |
| 761 | if (node->branch_flags.abort) |
| 762 | cnode->abort_count++; |
| 763 | |
| 764 | branch_type_count(&cnode->brtype_stat, |
| 765 | &node->branch_flags, |
| 766 | node->branch_from, |
| 767 | node->ip); |
| 768 | } else { |
| 769 | /* |
| 770 | * It's "from" of a branch |
| 771 | */ |
| 772 | cnode->brtype_stat.branch_to = false; |
| 773 | cnode->cycles_count += node->branch_flags.cycles; |
| 774 | cnode->iter_count += node->nr_loop_iter; |
| 775 | cnode->iter_cycles += node->iter_cycles; |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 776 | cnode->from_count++; |
Milian Wolff | bf36eb5 | 2017-10-20 12:14:47 -0300 | [diff] [blame] | 777 | } |
| 778 | } |
| 779 | |
| 780 | return match; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 781 | } |
| 782 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 783 | /* |
| 784 | * Split the parent in two parts (a new child is created) and |
| 785 | * give a part of its callchain to the created child. |
| 786 | * Then create another child to host the given callchain of new branch |
| 787 | */ |
Namhyung Kim | f2bb4c5 | 2016-02-16 23:08:23 +0900 | [diff] [blame] | 788 | static int |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 789 | split_add_child(struct callchain_node *parent, |
| 790 | struct callchain_cursor *cursor, |
| 791 | struct callchain_list *to_split, |
| 792 | u64 idx_parents, u64 idx_local, u64 period) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 793 | { |
| 794 | struct callchain_node *new; |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 795 | struct list_head *old_tail; |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 796 | unsigned int idx_total = idx_parents + idx_local; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 797 | |
| 798 | /* split */ |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 799 | new = create_child(parent, true); |
Namhyung Kim | f2bb4c5 | 2016-02-16 23:08:23 +0900 | [diff] [blame] | 800 | if (new == NULL) |
| 801 | return -1; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 802 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 803 | /* split the callchain and move a part to the new child */ |
| 804 | old_tail = parent->val.prev; |
| 805 | list_del_range(&to_split->list, old_tail); |
| 806 | new->val.next = &to_split->list; |
| 807 | new->val.prev = old_tail; |
| 808 | to_split->list.prev = &new->val; |
| 809 | old_tail->next = &new->val; |
| 810 | |
| 811 | /* split the hits */ |
| 812 | new->hit = parent->hit; |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 813 | new->children_hit = parent->children_hit; |
Frederic Weisbecker | f08c315 | 2011-01-14 04:51:59 +0100 | [diff] [blame] | 814 | parent->children_hit = callchain_cumul_hits(new); |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 815 | new->val_nr = parent->val_nr - idx_local; |
| 816 | parent->val_nr = idx_local; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 817 | new->count = parent->count; |
| 818 | new->children_count = parent->children_count; |
| 819 | parent->children_count = callchain_cumul_counts(new); |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 820 | |
| 821 | /* create a new child for the new branch if any */ |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 822 | if (idx_total < cursor->nr) { |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 823 | struct callchain_node *first; |
| 824 | struct callchain_list *cnode; |
| 825 | struct callchain_cursor_node *node; |
| 826 | struct rb_node *p, **pp; |
| 827 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 828 | parent->hit = 0; |
Frederic Weisbecker | 108553e | 2010-07-08 03:41:46 +0200 | [diff] [blame] | 829 | parent->children_hit += period; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 830 | parent->count = 0; |
| 831 | parent->children_count += 1; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 832 | |
| 833 | node = callchain_cursor_current(cursor); |
| 834 | new = add_child(parent, cursor, period); |
Namhyung Kim | 7565bd39 | 2016-02-16 23:08:20 +0900 | [diff] [blame] | 835 | if (new == NULL) |
Namhyung Kim | f2bb4c5 | 2016-02-16 23:08:23 +0900 | [diff] [blame] | 836 | return -1; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 837 | |
| 838 | /* |
| 839 | * This is second child since we moved parent's children |
| 840 | * to new (first) child above. |
| 841 | */ |
| 842 | p = parent->rb_root_in.rb_node; |
| 843 | first = rb_entry(p, struct callchain_node, rb_node_in); |
| 844 | cnode = list_first_entry(&first->val, struct callchain_list, |
| 845 | list); |
| 846 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 847 | if (match_chain(node, cnode) == MATCH_LT) |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 848 | pp = &p->rb_left; |
| 849 | else |
| 850 | pp = &p->rb_right; |
| 851 | |
| 852 | rb_link_node(&new->rb_node_in, p, pp); |
| 853 | rb_insert_color(&new->rb_node_in, &parent->rb_root_in); |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 854 | } else { |
Frederic Weisbecker | 108553e | 2010-07-08 03:41:46 +0200 | [diff] [blame] | 855 | parent->hit = period; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 856 | parent->count = 1; |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 857 | } |
Namhyung Kim | f2bb4c5 | 2016-02-16 23:08:23 +0900 | [diff] [blame] | 858 | return 0; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 859 | } |
| 860 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 861 | static enum match_result |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 862 | append_chain(struct callchain_node *root, |
| 863 | struct callchain_cursor *cursor, |
| 864 | u64 period); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 865 | |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 866 | static int |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 867 | append_chain_children(struct callchain_node *root, |
| 868 | struct callchain_cursor *cursor, |
| 869 | u64 period) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 870 | { |
| 871 | struct callchain_node *rnode; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 872 | struct callchain_cursor_node *node; |
| 873 | struct rb_node **p = &root->rb_root_in.rb_node; |
| 874 | struct rb_node *parent = NULL; |
| 875 | |
| 876 | node = callchain_cursor_current(cursor); |
| 877 | if (!node) |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 878 | return -1; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 879 | |
Ingo Molnar | 4d39c89 | 2021-03-23 17:09:15 +0100 | [diff] [blame] | 880 | /* lookup in children */ |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 881 | while (*p) { |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 882 | enum match_result ret; |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 883 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 884 | parent = *p; |
| 885 | rnode = rb_entry(parent, struct callchain_node, rb_node_in); |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 886 | |
Frederic Weisbecker | b965bb4 | 2014-01-14 16:37:15 +0100 | [diff] [blame] | 887 | /* If at least first entry matches, rely to children */ |
| 888 | ret = append_chain(rnode, cursor, period); |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 889 | if (ret == MATCH_EQ) |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 890 | goto inc_children_hit; |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 891 | if (ret == MATCH_ERROR) |
| 892 | return -1; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 893 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 894 | if (ret == MATCH_LT) |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 895 | p = &parent->rb_left; |
| 896 | else |
| 897 | p = &parent->rb_right; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 898 | } |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 899 | /* nothing in children, add to the current node */ |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 900 | rnode = add_child(root, cursor, period); |
Namhyung Kim | 7565bd39 | 2016-02-16 23:08:20 +0900 | [diff] [blame] | 901 | if (rnode == NULL) |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 902 | return -1; |
Namhyung Kim | 7565bd39 | 2016-02-16 23:08:20 +0900 | [diff] [blame] | 903 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 904 | rb_link_node(&rnode->rb_node_in, parent, p); |
| 905 | rb_insert_color(&rnode->rb_node_in, &root->rb_root_in); |
Frederic Weisbecker | e05b876 | 2009-07-05 07:39:20 +0200 | [diff] [blame] | 906 | |
Frederic Weisbecker | 1953287 | 2009-08-07 07:11:05 +0200 | [diff] [blame] | 907 | inc_children_hit: |
Frederic Weisbecker | 108553e | 2010-07-08 03:41:46 +0200 | [diff] [blame] | 908 | root->children_hit += period; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 909 | root->children_count++; |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 910 | return 0; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 911 | } |
| 912 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 913 | static enum match_result |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 914 | append_chain(struct callchain_node *root, |
| 915 | struct callchain_cursor *cursor, |
| 916 | u64 period) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 917 | { |
| 918 | struct callchain_list *cnode; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 919 | u64 start = cursor->pos; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 920 | bool found = false; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 921 | u64 matches; |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 922 | enum match_result cmp = MATCH_ERROR; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 923 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 924 | /* |
| 925 | * Lookup in the current node |
| 926 | * If we have a symbol, then compare the start to match |
Andi Kleen | 99571ab | 2013-07-18 15:33:57 -0700 | [diff] [blame] | 927 | * anywhere inside a function, unless function |
| 928 | * mode is disabled. |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 929 | */ |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 930 | list_for_each_entry(cnode, &root->val, list) { |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 931 | struct callchain_cursor_node *node; |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 932 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 933 | node = callchain_cursor_current(cursor); |
| 934 | if (!node) |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 935 | break; |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 936 | |
Frederic Weisbecker | b965bb4 | 2014-01-14 16:37:15 +0100 | [diff] [blame] | 937 | cmp = match_chain(node, cnode); |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 938 | if (cmp != MATCH_EQ) |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 939 | break; |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 940 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 941 | found = true; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 942 | |
| 943 | callchain_cursor_advance(cursor); |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 944 | } |
| 945 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 946 | /* matches not, relay no the parent */ |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 947 | if (!found) { |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 948 | WARN_ONCE(cmp == MATCH_ERROR, "Chain comparison error\n"); |
Frederic Weisbecker | b965bb4 | 2014-01-14 16:37:15 +0100 | [diff] [blame] | 949 | return cmp; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | matches = cursor->pos - start; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 953 | |
| 954 | /* we match only a part of the node. Split it and add the new chain */ |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 955 | if (matches < root->val_nr) { |
Namhyung Kim | f2bb4c5 | 2016-02-16 23:08:23 +0900 | [diff] [blame] | 956 | if (split_add_child(root, cursor, cnode, start, matches, |
| 957 | period) < 0) |
| 958 | return MATCH_ERROR; |
| 959 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 960 | return MATCH_EQ; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 961 | } |
| 962 | |
| 963 | /* we match 100% of the path, increment the hit */ |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 964 | if (matches == root->val_nr && cursor->pos == cursor->nr) { |
Frederic Weisbecker | 108553e | 2010-07-08 03:41:46 +0200 | [diff] [blame] | 965 | root->hit += period; |
Namhyung Kim | 5e47f8f | 2015-11-09 14:45:40 +0900 | [diff] [blame] | 966 | root->count++; |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 967 | return MATCH_EQ; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 968 | } |
| 969 | |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 970 | /* We match the node and still have a part remaining */ |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 971 | if (append_chain_children(root, cursor, period) < 0) |
| 972 | return MATCH_ERROR; |
Frederic Weisbecker | deac911 | 2009-07-01 05:35:15 +0200 | [diff] [blame] | 973 | |
Namhyung Kim | 2d713b8 | 2016-02-16 23:08:22 +0900 | [diff] [blame] | 974 | return MATCH_EQ; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 975 | } |
| 976 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 977 | int callchain_append(struct callchain_root *root, |
| 978 | struct callchain_cursor *cursor, |
| 979 | u64 period) |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 980 | { |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 981 | if (!cursor->nr) |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 982 | return 0; |
| 983 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 984 | callchain_cursor_commit(cursor); |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 985 | |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 986 | if (append_chain_children(&root->node, cursor, period) < 0) |
| 987 | return -1; |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 988 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 989 | if (cursor->nr > root->max_depth) |
| 990 | root->max_depth = cursor->nr; |
Frederic Weisbecker | 301fde2 | 2010-03-22 13:09:33 -0300 | [diff] [blame] | 991 | |
| 992 | return 0; |
Frederic Weisbecker | 8cb76d9 | 2009-06-26 16:28:00 +0200 | [diff] [blame] | 993 | } |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 994 | |
| 995 | static int |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 996 | merge_chain_branch(struct callchain_cursor *cursor, |
| 997 | struct callchain_node *dst, struct callchain_node *src) |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 998 | { |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 999 | struct callchain_cursor_node **old_last = cursor->last; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 1000 | struct callchain_node *child; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1001 | struct callchain_list *list, *next_list; |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 1002 | struct rb_node *n; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1003 | int old_pos = cursor->nr; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1004 | int err = 0; |
| 1005 | |
| 1006 | list_for_each_entry_safe(list, next_list, &src->val, list) { |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1007 | callchain_cursor_append(cursor, list->ip, &list->ms, |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 1008 | false, NULL, 0, 0, 0, list->srcline); |
Arnaldo Carvalho de Melo | e56fbc9 | 2019-07-04 12:13:46 -0300 | [diff] [blame] | 1009 | list_del_init(&list->list); |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 1010 | map__zput(list->ms.map); |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1011 | free(list); |
| 1012 | } |
| 1013 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1014 | if (src->hit) { |
| 1015 | callchain_cursor_commit(cursor); |
Namhyung Kim | dca0d12 | 2016-02-16 23:08:24 +0900 | [diff] [blame] | 1016 | if (append_chain_children(dst, cursor, src->hit) < 0) |
| 1017 | return -1; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1018 | } |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1019 | |
Namhyung Kim | e369517 | 2013-10-11 14:15:36 +0900 | [diff] [blame] | 1020 | n = rb_first(&src->rb_root_in); |
| 1021 | while (n) { |
| 1022 | child = container_of(n, struct callchain_node, rb_node_in); |
| 1023 | n = rb_next(n); |
| 1024 | rb_erase(&child->rb_node_in, &src->rb_root_in); |
| 1025 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1026 | err = merge_chain_branch(cursor, dst, child); |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1027 | if (err) |
| 1028 | break; |
| 1029 | |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1030 | free(child); |
| 1031 | } |
| 1032 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1033 | cursor->nr = old_pos; |
| 1034 | cursor->last = old_last; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1035 | |
| 1036 | return err; |
| 1037 | } |
| 1038 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1039 | int callchain_merge(struct callchain_cursor *cursor, |
| 1040 | struct callchain_root *dst, struct callchain_root *src) |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1041 | { |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1042 | return merge_chain_branch(cursor, &dst->node, &src->node); |
| 1043 | } |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1044 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1045 | int callchain_cursor_append(struct callchain_cursor *cursor, |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1046 | u64 ip, struct map_symbol *ms, |
Jin Yao | 410024d | 2016-10-31 09:19:49 +0800 | [diff] [blame] | 1047 | bool branch, struct branch_flags *flags, |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 1048 | int nr_loop_iter, u64 iter_cycles, u64 branch_from, |
| 1049 | const char *srcline) |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1050 | { |
| 1051 | struct callchain_cursor_node *node = *cursor->last; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1052 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1053 | if (!node) { |
Paul Gortmaker | 91b9880 | 2013-01-30 20:05:49 -0500 | [diff] [blame] | 1054 | node = calloc(1, sizeof(*node)); |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1055 | if (!node) |
| 1056 | return -ENOMEM; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1057 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1058 | *cursor->last = node; |
| 1059 | } |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1060 | |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1061 | node->ip = ip; |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1062 | map__zput(node->ms.map); |
| 1063 | node->ms = *ms; |
| 1064 | map__get(node->ms.map); |
Jin Yao | 410024d | 2016-10-31 09:19:49 +0800 | [diff] [blame] | 1065 | node->branch = branch; |
| 1066 | node->nr_loop_iter = nr_loop_iter; |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1067 | node->iter_cycles = iter_cycles; |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 1068 | node->srcline = srcline; |
Jin Yao | 410024d | 2016-10-31 09:19:49 +0800 | [diff] [blame] | 1069 | |
| 1070 | if (flags) |
| 1071 | memcpy(&node->branch_flags, flags, |
| 1072 | sizeof(struct branch_flags)); |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1073 | |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 1074 | node->branch_from = branch_from; |
Frederic Weisbecker | 1b3a0e9 | 2011-01-14 04:51:58 +0100 | [diff] [blame] | 1075 | cursor->nr++; |
| 1076 | |
| 1077 | cursor->last = &node->next; |
| 1078 | |
| 1079 | return 0; |
Frederic Weisbecker | 612d4fd | 2010-08-22 21:10:35 +0200 | [diff] [blame] | 1080 | } |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 1081 | |
Arnaldo Carvalho de Melo | 91d7b2d | 2016-04-14 14:48:07 -0300 | [diff] [blame] | 1082 | int sample__resolve_callchain(struct perf_sample *sample, |
| 1083 | struct callchain_cursor *cursor, struct symbol **parent, |
Jiri Olsa | 32dcd02 | 2019-07-21 13:23:51 +0200 | [diff] [blame] | 1084 | struct evsel *evsel, struct addr_location *al, |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 1085 | int max_stack) |
| 1086 | { |
Jin Yao | b49a821 | 2017-05-08 18:43:02 +0800 | [diff] [blame] | 1087 | if (sample->callchain == NULL && !symbol_conf.show_branchflag_count) |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 1088 | return 0; |
| 1089 | |
Namhyung Kim | 7a13aa2 | 2012-09-11 14:13:04 +0900 | [diff] [blame] | 1090 | if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain || |
Jin Yao | b49a821 | 2017-05-08 18:43:02 +0800 | [diff] [blame] | 1091 | perf_hpp_list.parent || symbol_conf.show_branchflag_count) { |
Arnaldo Carvalho de Melo | 91d7b2d | 2016-04-14 14:48:07 -0300 | [diff] [blame] | 1092 | return thread__resolve_callchain(al->thread, cursor, evsel, sample, |
Arnaldo Carvalho de Melo | cc8b7c2 | 2014-10-23 15:26:17 -0300 | [diff] [blame] | 1093 | parent, al, max_stack); |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 1094 | } |
| 1095 | return 0; |
| 1096 | } |
| 1097 | |
| 1098 | int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample) |
| 1099 | { |
Jin Yao | b49a821 | 2017-05-08 18:43:02 +0800 | [diff] [blame] | 1100 | if ((!symbol_conf.use_callchain || sample->callchain == NULL) && |
| 1101 | !symbol_conf.show_branchflag_count) |
Namhyung Kim | 2dc9fb1 | 2014-01-14 14:25:35 +0900 | [diff] [blame] | 1102 | return 0; |
| 1103 | return callchain_append(he->callchain, &callchain_cursor, sample->period); |
| 1104 | } |
Namhyung Kim | c7405d8 | 2013-10-31 13:58:30 +0900 | [diff] [blame] | 1105 | |
| 1106 | int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node, |
| 1107 | bool hide_unresolved) |
| 1108 | { |
Arnaldo Carvalho de Melo | f2eaea0 | 2019-11-25 22:15:35 -0300 | [diff] [blame] | 1109 | al->maps = node->ms.maps; |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1110 | al->map = node->ms.map; |
| 1111 | al->sym = node->ms.sym; |
Milian Wolff | 1fb7d06 | 2017-10-19 13:38:35 +0200 | [diff] [blame] | 1112 | al->srcline = node->srcline; |
Namhyung Kim | d6332a1 | 2017-10-20 14:15:33 +0900 | [diff] [blame] | 1113 | al->addr = node->ip; |
Namhyung Kim | c7405d8 | 2013-10-31 13:58:30 +0900 | [diff] [blame] | 1114 | |
| 1115 | if (al->sym == NULL) { |
| 1116 | if (hide_unresolved) |
| 1117 | return 0; |
| 1118 | if (al->map == NULL) |
| 1119 | goto out; |
| 1120 | } |
| 1121 | |
Arnaldo Carvalho de Melo | 694520d | 2019-11-25 22:11:20 -0300 | [diff] [blame] | 1122 | if (al->maps == &al->maps->machine->kmaps) { |
| 1123 | if (machine__is_host(al->maps->machine)) { |
Namhyung Kim | c7405d8 | 2013-10-31 13:58:30 +0900 | [diff] [blame] | 1124 | al->cpumode = PERF_RECORD_MISC_KERNEL; |
| 1125 | al->level = 'k'; |
| 1126 | } else { |
| 1127 | al->cpumode = PERF_RECORD_MISC_GUEST_KERNEL; |
| 1128 | al->level = 'g'; |
| 1129 | } |
| 1130 | } else { |
Arnaldo Carvalho de Melo | 694520d | 2019-11-25 22:11:20 -0300 | [diff] [blame] | 1131 | if (machine__is_host(al->maps->machine)) { |
Namhyung Kim | c7405d8 | 2013-10-31 13:58:30 +0900 | [diff] [blame] | 1132 | al->cpumode = PERF_RECORD_MISC_USER; |
| 1133 | al->level = '.'; |
| 1134 | } else if (perf_guest) { |
| 1135 | al->cpumode = PERF_RECORD_MISC_GUEST_USER; |
| 1136 | al->level = 'u'; |
| 1137 | } else { |
| 1138 | al->cpumode = PERF_RECORD_MISC_HYPERVISOR; |
| 1139 | al->level = 'H'; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | out: |
| 1144 | return 1; |
| 1145 | } |
Andi Kleen | 2989cca | 2014-11-12 18:05:23 -0800 | [diff] [blame] | 1146 | |
| 1147 | char *callchain_list__sym_name(struct callchain_list *cl, |
| 1148 | char *bf, size_t bfsize, bool show_dso) |
| 1149 | { |
Milian Wolff | 5dfa210 | 2017-03-18 22:49:28 +0100 | [diff] [blame] | 1150 | bool show_addr = callchain_param.key == CCKEY_ADDRESS; |
| 1151 | bool show_srcline = show_addr || callchain_param.key == CCKEY_SRCLINE; |
Andi Kleen | 2989cca | 2014-11-12 18:05:23 -0800 | [diff] [blame] | 1152 | int printed; |
| 1153 | |
| 1154 | if (cl->ms.sym) { |
Milian Wolff | 8932f80 | 2017-10-09 22:33:01 +0200 | [diff] [blame] | 1155 | const char *inlined = cl->ms.sym->inlined ? " (inlined)" : ""; |
| 1156 | |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 1157 | if (show_srcline && cl->srcline) |
Milian Wolff | 8932f80 | 2017-10-09 22:33:01 +0200 | [diff] [blame] | 1158 | printed = scnprintf(bf, bfsize, "%s %s%s", |
| 1159 | cl->ms.sym->name, cl->srcline, |
| 1160 | inlined); |
Andi Kleen | 23f0981 | 2014-11-12 18:05:24 -0800 | [diff] [blame] | 1161 | else |
Milian Wolff | 8932f80 | 2017-10-09 22:33:01 +0200 | [diff] [blame] | 1162 | printed = scnprintf(bf, bfsize, "%s%s", |
| 1163 | cl->ms.sym->name, inlined); |
Andi Kleen | 2989cca | 2014-11-12 18:05:23 -0800 | [diff] [blame] | 1164 | } else |
| 1165 | printed = scnprintf(bf, bfsize, "%#" PRIx64, cl->ip); |
| 1166 | |
| 1167 | if (show_dso) |
| 1168 | scnprintf(bf + printed, bfsize - printed, " %s", |
| 1169 | cl->ms.map ? |
| 1170 | cl->ms.map->dso->short_name : |
| 1171 | "unknown"); |
| 1172 | |
| 1173 | return bf; |
| 1174 | } |
Namhyung Kim | d114960 | 2014-12-30 14:38:13 +0900 | [diff] [blame] | 1175 | |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1176 | char *callchain_node__scnprintf_value(struct callchain_node *node, |
| 1177 | char *bf, size_t bfsize, u64 total) |
| 1178 | { |
| 1179 | double percent = 0.0; |
| 1180 | u64 period = callchain_cumul_hits(node); |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1181 | unsigned count = callchain_cumul_counts(node); |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1182 | |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1183 | if (callchain_param.mode == CHAIN_FOLDED) { |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1184 | period = node->hit; |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1185 | count = node->count; |
| 1186 | } |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1187 | |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1188 | switch (callchain_param.value) { |
| 1189 | case CCVAL_PERIOD: |
| 1190 | scnprintf(bf, bfsize, "%"PRIu64, period); |
| 1191 | break; |
| 1192 | case CCVAL_COUNT: |
| 1193 | scnprintf(bf, bfsize, "%u", count); |
| 1194 | break; |
| 1195 | case CCVAL_PERCENT: |
| 1196 | default: |
| 1197 | if (total) |
| 1198 | percent = period * 100.0 / total; |
| 1199 | scnprintf(bf, bfsize, "%.2f%%", percent); |
| 1200 | break; |
| 1201 | } |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1202 | return bf; |
| 1203 | } |
| 1204 | |
| 1205 | int callchain_node__fprintf_value(struct callchain_node *node, |
| 1206 | FILE *fp, u64 total) |
| 1207 | { |
| 1208 | double percent = 0.0; |
| 1209 | u64 period = callchain_cumul_hits(node); |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1210 | unsigned count = callchain_cumul_counts(node); |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1211 | |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1212 | if (callchain_param.mode == CHAIN_FOLDED) { |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1213 | period = node->hit; |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1214 | count = node->count; |
| 1215 | } |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1216 | |
Namhyung Kim | f2af008 | 2015-11-09 14:45:41 +0900 | [diff] [blame] | 1217 | switch (callchain_param.value) { |
| 1218 | case CCVAL_PERIOD: |
| 1219 | return fprintf(fp, "%"PRIu64, period); |
| 1220 | case CCVAL_COUNT: |
| 1221 | return fprintf(fp, "%u", count); |
| 1222 | case CCVAL_PERCENT: |
| 1223 | default: |
| 1224 | if (total) |
| 1225 | percent = period * 100.0 / total; |
| 1226 | return percent_color_fprintf(fp, "%.2f%%", percent); |
| 1227 | } |
| 1228 | return 0; |
Namhyung Kim | 5ab250c | 2015-11-09 14:45:39 +0900 | [diff] [blame] | 1229 | } |
| 1230 | |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1231 | static void callchain_counts_value(struct callchain_node *node, |
| 1232 | u64 *branch_count, u64 *predicted_count, |
| 1233 | u64 *abort_count, u64 *cycles_count) |
| 1234 | { |
| 1235 | struct callchain_list *clist; |
| 1236 | |
| 1237 | list_for_each_entry(clist, &node->val, list) { |
| 1238 | if (branch_count) |
| 1239 | *branch_count += clist->branch_count; |
| 1240 | |
| 1241 | if (predicted_count) |
| 1242 | *predicted_count += clist->predicted_count; |
| 1243 | |
| 1244 | if (abort_count) |
| 1245 | *abort_count += clist->abort_count; |
| 1246 | |
| 1247 | if (cycles_count) |
| 1248 | *cycles_count += clist->cycles_count; |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | static int callchain_node_branch_counts_cumul(struct callchain_node *node, |
| 1253 | u64 *branch_count, |
| 1254 | u64 *predicted_count, |
| 1255 | u64 *abort_count, |
| 1256 | u64 *cycles_count) |
| 1257 | { |
| 1258 | struct callchain_node *child; |
| 1259 | struct rb_node *n; |
| 1260 | |
| 1261 | n = rb_first(&node->rb_root_in); |
| 1262 | while (n) { |
| 1263 | child = rb_entry(n, struct callchain_node, rb_node_in); |
| 1264 | n = rb_next(n); |
| 1265 | |
| 1266 | callchain_node_branch_counts_cumul(child, branch_count, |
| 1267 | predicted_count, |
| 1268 | abort_count, |
| 1269 | cycles_count); |
| 1270 | |
| 1271 | callchain_counts_value(child, branch_count, |
| 1272 | predicted_count, abort_count, |
| 1273 | cycles_count); |
| 1274 | } |
| 1275 | |
| 1276 | return 0; |
| 1277 | } |
| 1278 | |
| 1279 | int callchain_branch_counts(struct callchain_root *root, |
| 1280 | u64 *branch_count, u64 *predicted_count, |
| 1281 | u64 *abort_count, u64 *cycles_count) |
| 1282 | { |
| 1283 | if (branch_count) |
| 1284 | *branch_count = 0; |
| 1285 | |
| 1286 | if (predicted_count) |
| 1287 | *predicted_count = 0; |
| 1288 | |
| 1289 | if (abort_count) |
| 1290 | *abort_count = 0; |
| 1291 | |
| 1292 | if (cycles_count) |
| 1293 | *cycles_count = 0; |
| 1294 | |
| 1295 | return callchain_node_branch_counts_cumul(&root->node, |
| 1296 | branch_count, |
| 1297 | predicted_count, |
| 1298 | abort_count, |
| 1299 | cycles_count); |
| 1300 | } |
| 1301 | |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1302 | static int count_pri64_printf(int idx, const char *str, u64 value, char *bf, int bfsize) |
| 1303 | { |
| 1304 | int printed; |
| 1305 | |
| 1306 | printed = scnprintf(bf, bfsize, "%s%s:%" PRId64 "", (idx) ? " " : " (", str, value); |
| 1307 | |
| 1308 | return printed; |
| 1309 | } |
| 1310 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1311 | static int count_float_printf(int idx, const char *str, float value, |
| 1312 | char *bf, int bfsize, float threshold) |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1313 | { |
| 1314 | int printed; |
| 1315 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1316 | if (threshold != 0.0 && value < threshold) |
| 1317 | return 0; |
| 1318 | |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1319 | printed = scnprintf(bf, bfsize, "%s%s:%.1f%%", (idx) ? " " : " (", str, value); |
| 1320 | |
| 1321 | return printed; |
| 1322 | } |
| 1323 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1324 | static int branch_to_str(char *bf, int bfsize, |
| 1325 | u64 branch_count, u64 predicted_count, |
| 1326 | u64 abort_count, |
| 1327 | struct branch_type_stat *brtype_stat) |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1328 | { |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 1329 | int printed, i = 0; |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1330 | |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 1331 | printed = branch_type_str(brtype_stat, bf, bfsize); |
| 1332 | if (printed) |
| 1333 | i++; |
| 1334 | |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1335 | if (predicted_count < branch_count) { |
| 1336 | printed += count_float_printf(i++, "predicted", |
| 1337 | predicted_count * 100.0 / branch_count, |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1338 | bf + printed, bfsize - printed, 0.0); |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1339 | } |
| 1340 | |
| 1341 | if (abort_count) { |
| 1342 | printed += count_float_printf(i++, "abort", |
| 1343 | abort_count * 100.0 / branch_count, |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1344 | bf + printed, bfsize - printed, 0.1); |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1345 | } |
| 1346 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1347 | if (i) |
| 1348 | printed += scnprintf(bf + printed, bfsize - printed, ")"); |
| 1349 | |
| 1350 | return printed; |
| 1351 | } |
| 1352 | |
| 1353 | static int branch_from_str(char *bf, int bfsize, |
| 1354 | u64 branch_count, |
| 1355 | u64 cycles_count, u64 iter_count, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1356 | u64 iter_cycles, u64 from_count) |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1357 | { |
| 1358 | int printed = 0, i = 0; |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1359 | u64 cycles, v = 0; |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1360 | |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1361 | cycles = cycles_count / branch_count; |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1362 | if (cycles) { |
| 1363 | printed += count_pri64_printf(i++, "cycles", |
| 1364 | cycles, |
| 1365 | bf + printed, bfsize - printed); |
| 1366 | } |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1367 | |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1368 | if (iter_count && from_count) { |
| 1369 | v = iter_count / from_count; |
| 1370 | if (v) { |
| 1371 | printed += count_pri64_printf(i++, "iter", |
| 1372 | v, bf + printed, bfsize - printed); |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1373 | |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1374 | printed += count_pri64_printf(i++, "avg_cycles", |
| 1375 | iter_cycles / iter_count, |
| 1376 | bf + printed, bfsize - printed); |
| 1377 | } |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1378 | } |
| 1379 | |
Jin Yao | 8d51735 | 2017-07-18 20:13:12 +0800 | [diff] [blame] | 1380 | if (i) |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1381 | printed += scnprintf(bf + printed, bfsize - printed, ")"); |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1382 | |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1383 | return printed; |
| 1384 | } |
| 1385 | |
| 1386 | static int counts_str_build(char *bf, int bfsize, |
| 1387 | u64 branch_count, u64 predicted_count, |
| 1388 | u64 abort_count, u64 cycles_count, |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1389 | u64 iter_count, u64 iter_cycles, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1390 | u64 from_count, |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1391 | struct branch_type_stat *brtype_stat) |
| 1392 | { |
| 1393 | int printed; |
| 1394 | |
| 1395 | if (branch_count == 0) |
| 1396 | return scnprintf(bf, bfsize, " (calltrace)"); |
| 1397 | |
| 1398 | if (brtype_stat->branch_to) { |
| 1399 | printed = branch_to_str(bf, bfsize, branch_count, |
| 1400 | predicted_count, abort_count, brtype_stat); |
| 1401 | } else { |
| 1402 | printed = branch_from_str(bf, bfsize, branch_count, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1403 | cycles_count, iter_count, iter_cycles, |
| 1404 | from_count); |
Jin Yao | a1a8bed | 2017-07-24 19:09:07 +0800 | [diff] [blame] | 1405 | } |
| 1406 | |
| 1407 | if (!printed) |
| 1408 | bf[0] = 0; |
| 1409 | |
| 1410 | return printed; |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1411 | } |
| 1412 | |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1413 | static int callchain_counts_printf(FILE *fp, char *bf, int bfsize, |
| 1414 | u64 branch_count, u64 predicted_count, |
| 1415 | u64 abort_count, u64 cycles_count, |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1416 | u64 iter_count, u64 iter_cycles, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1417 | u64 from_count, |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 1418 | struct branch_type_stat *brtype_stat) |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1419 | { |
Jin Yao | b851dd4 | 2017-07-18 20:13:15 +0800 | [diff] [blame] | 1420 | char str[256]; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1421 | |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1422 | counts_str_build(str, sizeof(str), branch_count, |
| 1423 | predicted_count, abort_count, cycles_count, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1424 | iter_count, iter_cycles, from_count, brtype_stat); |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1425 | |
| 1426 | if (fp) |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1427 | return fprintf(fp, "%s", str); |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1428 | |
Jin Yao | c1dfcfa | 2017-03-09 16:06:26 +0800 | [diff] [blame] | 1429 | return scnprintf(bf, bfsize, "%s", str); |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1430 | } |
| 1431 | |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1432 | int callchain_list_counts__printf_value(struct callchain_list *clist, |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1433 | FILE *fp, char *bf, int bfsize) |
| 1434 | { |
| 1435 | u64 branch_count, predicted_count; |
| 1436 | u64 abort_count, cycles_count; |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1437 | u64 iter_count, iter_cycles; |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1438 | u64 from_count; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1439 | |
| 1440 | branch_count = clist->branch_count; |
| 1441 | predicted_count = clist->predicted_count; |
| 1442 | abort_count = clist->abort_count; |
| 1443 | cycles_count = clist->cycles_count; |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1444 | iter_count = clist->iter_count; |
| 1445 | iter_cycles = clist->iter_cycles; |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1446 | from_count = clist->from_count; |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1447 | |
| 1448 | return callchain_counts_printf(fp, bf, bfsize, branch_count, |
| 1449 | predicted_count, abort_count, |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1450 | cycles_count, iter_count, iter_cycles, |
Jin Yao | a3366db0 | 2019-01-04 14:10:30 +0800 | [diff] [blame] | 1451 | from_count, &clist->brtype_stat); |
Jin Yao | 3dd029e | 2016-10-31 09:19:51 +0800 | [diff] [blame] | 1452 | } |
| 1453 | |
Namhyung Kim | d114960 | 2014-12-30 14:38:13 +0900 | [diff] [blame] | 1454 | static void free_callchain_node(struct callchain_node *node) |
| 1455 | { |
| 1456 | struct callchain_list *list, *tmp; |
| 1457 | struct callchain_node *child; |
| 1458 | struct rb_node *n; |
| 1459 | |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1460 | list_for_each_entry_safe(list, tmp, &node->parent_val, list) { |
Arnaldo Carvalho de Melo | e56fbc9 | 2019-07-04 12:13:46 -0300 | [diff] [blame] | 1461 | list_del_init(&list->list); |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 1462 | map__zput(list->ms.map); |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1463 | free(list); |
| 1464 | } |
| 1465 | |
Namhyung Kim | d114960 | 2014-12-30 14:38:13 +0900 | [diff] [blame] | 1466 | list_for_each_entry_safe(list, tmp, &node->val, list) { |
Arnaldo Carvalho de Melo | e56fbc9 | 2019-07-04 12:13:46 -0300 | [diff] [blame] | 1467 | list_del_init(&list->list); |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 1468 | map__zput(list->ms.map); |
Namhyung Kim | d114960 | 2014-12-30 14:38:13 +0900 | [diff] [blame] | 1469 | free(list); |
| 1470 | } |
| 1471 | |
| 1472 | n = rb_first(&node->rb_root_in); |
| 1473 | while (n) { |
| 1474 | child = container_of(n, struct callchain_node, rb_node_in); |
| 1475 | n = rb_next(n); |
| 1476 | rb_erase(&child->rb_node_in, &node->rb_root_in); |
| 1477 | |
| 1478 | free_callchain_node(child); |
| 1479 | free(child); |
| 1480 | } |
| 1481 | } |
| 1482 | |
| 1483 | void free_callchain(struct callchain_root *root) |
| 1484 | { |
| 1485 | if (!symbol_conf.use_callchain) |
| 1486 | return; |
| 1487 | |
| 1488 | free_callchain_node(&root->node); |
| 1489 | } |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1490 | |
Namhyung Kim | 42b276a | 2016-01-05 12:06:00 +0900 | [diff] [blame] | 1491 | static u64 decay_callchain_node(struct callchain_node *node) |
| 1492 | { |
| 1493 | struct callchain_node *child; |
| 1494 | struct rb_node *n; |
| 1495 | u64 child_hits = 0; |
| 1496 | |
| 1497 | n = rb_first(&node->rb_root_in); |
| 1498 | while (n) { |
| 1499 | child = container_of(n, struct callchain_node, rb_node_in); |
| 1500 | |
| 1501 | child_hits += decay_callchain_node(child); |
| 1502 | n = rb_next(n); |
| 1503 | } |
| 1504 | |
| 1505 | node->hit = (node->hit * 7) / 8; |
| 1506 | node->children_hit = child_hits; |
| 1507 | |
| 1508 | return node->hit; |
| 1509 | } |
| 1510 | |
| 1511 | void decay_callchain(struct callchain_root *root) |
| 1512 | { |
| 1513 | if (!symbol_conf.use_callchain) |
| 1514 | return; |
| 1515 | |
| 1516 | decay_callchain_node(&root->node); |
| 1517 | } |
| 1518 | |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1519 | int callchain_node__make_parent_list(struct callchain_node *node) |
| 1520 | { |
| 1521 | struct callchain_node *parent = node->parent; |
| 1522 | struct callchain_list *chain, *new; |
| 1523 | LIST_HEAD(head); |
| 1524 | |
| 1525 | while (parent) { |
| 1526 | list_for_each_entry_reverse(chain, &parent->val, list) { |
| 1527 | new = malloc(sizeof(*new)); |
| 1528 | if (new == NULL) |
| 1529 | goto out; |
| 1530 | *new = *chain; |
| 1531 | new->has_children = false; |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 1532 | map__get(new->ms.map); |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1533 | list_add_tail(&new->list, &head); |
| 1534 | } |
| 1535 | parent = parent->parent; |
| 1536 | } |
| 1537 | |
| 1538 | list_for_each_entry_safe_reverse(chain, new, &head, list) |
| 1539 | list_move_tail(&chain->list, &node->parent_val); |
| 1540 | |
| 1541 | if (!list_empty(&node->parent_val)) { |
| 1542 | chain = list_first_entry(&node->parent_val, struct callchain_list, list); |
| 1543 | chain->has_children = rb_prev(&node->rb_node) || rb_next(&node->rb_node); |
| 1544 | |
| 1545 | chain = list_first_entry(&node->val, struct callchain_list, list); |
| 1546 | chain->has_children = false; |
| 1547 | } |
| 1548 | return 0; |
| 1549 | |
| 1550 | out: |
| 1551 | list_for_each_entry_safe(chain, new, &head, list) { |
Arnaldo Carvalho de Melo | e56fbc9 | 2019-07-04 12:13:46 -0300 | [diff] [blame] | 1552 | list_del_init(&chain->list); |
Krister Johansen | 9c68ae9 | 2017-01-05 22:23:31 -0800 | [diff] [blame] | 1553 | map__zput(chain->ms.map); |
Namhyung Kim | 4b3a321 | 2015-11-09 14:45:43 +0900 | [diff] [blame] | 1554 | free(chain); |
| 1555 | } |
| 1556 | return -ENOMEM; |
| 1557 | } |
Namhyung Kim | 571f1eb | 2016-12-06 12:40:02 +0900 | [diff] [blame] | 1558 | |
| 1559 | int callchain_cursor__copy(struct callchain_cursor *dst, |
| 1560 | struct callchain_cursor *src) |
| 1561 | { |
| 1562 | int rc = 0; |
| 1563 | |
| 1564 | callchain_cursor_reset(dst); |
| 1565 | callchain_cursor_commit(src); |
| 1566 | |
| 1567 | while (true) { |
| 1568 | struct callchain_cursor_node *node; |
| 1569 | |
| 1570 | node = callchain_cursor_current(src); |
| 1571 | if (node == NULL) |
| 1572 | break; |
| 1573 | |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1574 | rc = callchain_cursor_append(dst, node->ip, &node->ms, |
Namhyung Kim | 571f1eb | 2016-12-06 12:40:02 +0900 | [diff] [blame] | 1575 | node->branch, &node->branch_flags, |
Jin Yao | c4ee062 | 2017-08-07 21:05:15 +0800 | [diff] [blame] | 1576 | node->nr_loop_iter, |
| 1577 | node->iter_cycles, |
Milian Wolff | 40a342c | 2017-10-09 22:32:56 +0200 | [diff] [blame] | 1578 | node->branch_from, node->srcline); |
Namhyung Kim | 571f1eb | 2016-12-06 12:40:02 +0900 | [diff] [blame] | 1579 | if (rc) |
| 1580 | break; |
| 1581 | |
| 1582 | callchain_cursor_advance(src); |
| 1583 | } |
| 1584 | |
| 1585 | return rc; |
| 1586 | } |
Arnaldo Carvalho de Melo | 7b644f9 | 2019-01-27 11:55:39 +0100 | [diff] [blame] | 1587 | |
| 1588 | /* |
| 1589 | * Initialize a cursor before adding entries inside, but keep |
| 1590 | * the previously allocated entries as a cache. |
| 1591 | */ |
| 1592 | void callchain_cursor_reset(struct callchain_cursor *cursor) |
| 1593 | { |
| 1594 | struct callchain_cursor_node *node; |
| 1595 | |
| 1596 | cursor->nr = 0; |
| 1597 | cursor->last = &cursor->first; |
| 1598 | |
| 1599 | for (node = cursor->first; node != NULL; node = node->next) |
Arnaldo Carvalho de Melo | 5f0fef8 | 2019-11-04 12:14:32 -0300 | [diff] [blame] | 1600 | map__zput(node->ms.map); |
Arnaldo Carvalho de Melo | 7b644f9 | 2019-01-27 11:55:39 +0100 | [diff] [blame] | 1601 | } |
Jiri Olsa | 0d71a2b | 2020-05-07 11:50:23 +0200 | [diff] [blame] | 1602 | |
| 1603 | void callchain_param_setup(u64 sample_type) |
| 1604 | { |
| 1605 | if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) { |
| 1606 | if ((sample_type & PERF_SAMPLE_REGS_USER) && |
| 1607 | (sample_type & PERF_SAMPLE_STACK_USER)) { |
| 1608 | callchain_param.record_mode = CALLCHAIN_DWARF; |
| 1609 | dwarf_callchain_users = true; |
| 1610 | } else if (sample_type & PERF_SAMPLE_BRANCH_STACK) |
| 1611 | callchain_param.record_mode = CALLCHAIN_LBR; |
| 1612 | else |
| 1613 | callchain_param.record_mode = CALLCHAIN_FP; |
| 1614 | } |
| 1615 | } |
Jin Yao | 47ef839 | 2020-10-09 10:28:41 +0800 | [diff] [blame] | 1616 | |
| 1617 | static bool chain_match(struct callchain_list *base_chain, |
| 1618 | struct callchain_list *pair_chain) |
| 1619 | { |
| 1620 | enum match_result match; |
| 1621 | |
| 1622 | match = match_chain_strings(base_chain->srcline, |
| 1623 | pair_chain->srcline); |
| 1624 | if (match != MATCH_ERROR) |
| 1625 | return match == MATCH_EQ; |
| 1626 | |
| 1627 | match = match_chain_dso_addresses(base_chain->ms.map, |
| 1628 | base_chain->ip, |
| 1629 | pair_chain->ms.map, |
| 1630 | pair_chain->ip); |
| 1631 | |
| 1632 | return match == MATCH_EQ; |
| 1633 | } |
| 1634 | |
| 1635 | bool callchain_cnode_matched(struct callchain_node *base_cnode, |
| 1636 | struct callchain_node *pair_cnode) |
| 1637 | { |
| 1638 | struct callchain_list *base_chain, *pair_chain; |
| 1639 | bool match = false; |
| 1640 | |
| 1641 | pair_chain = list_first_entry(&pair_cnode->val, |
| 1642 | struct callchain_list, |
| 1643 | list); |
| 1644 | |
| 1645 | list_for_each_entry(base_chain, &base_cnode->val, list) { |
| 1646 | if (&pair_chain->list == &pair_cnode->val) |
| 1647 | return false; |
| 1648 | |
| 1649 | if (!base_chain->srcline || !pair_chain->srcline) { |
| 1650 | pair_chain = list_next_entry(pair_chain, list); |
| 1651 | continue; |
| 1652 | } |
| 1653 | |
| 1654 | match = chain_match(base_chain, pair_chain); |
| 1655 | if (!match) |
| 1656 | return false; |
| 1657 | |
| 1658 | pair_chain = list_next_entry(pair_chain, list); |
| 1659 | } |
| 1660 | |
| 1661 | /* |
| 1662 | * Say chain1 is ABC, chain2 is ABCD, we consider they are |
| 1663 | * not fully matched. |
| 1664 | */ |
| 1665 | if (pair_chain && (&pair_chain->list != &pair_cnode->val)) |
| 1666 | return false; |
| 1667 | |
| 1668 | return match; |
| 1669 | } |
Jin Yao | 28904f4 | 2020-10-09 10:28:43 +0800 | [diff] [blame] | 1670 | |
| 1671 | static u64 count_callchain_hits(struct hist_entry *he) |
| 1672 | { |
| 1673 | struct rb_root *root = &he->sorted_chain; |
| 1674 | struct rb_node *rb_node = rb_first(root); |
| 1675 | struct callchain_node *node; |
| 1676 | u64 chain_hits = 0; |
| 1677 | |
| 1678 | while (rb_node) { |
| 1679 | node = rb_entry(rb_node, struct callchain_node, rb_node); |
| 1680 | chain_hits += node->hit; |
| 1681 | rb_node = rb_next(rb_node); |
| 1682 | } |
| 1683 | |
| 1684 | return chain_hits; |
| 1685 | } |
| 1686 | |
| 1687 | u64 callchain_total_hits(struct hists *hists) |
| 1688 | { |
| 1689 | struct rb_node *next = rb_first_cached(&hists->entries); |
| 1690 | u64 chain_hits = 0; |
| 1691 | |
| 1692 | while (next) { |
| 1693 | struct hist_entry *he = rb_entry(next, struct hist_entry, |
| 1694 | rb_node); |
| 1695 | |
| 1696 | chain_hits += count_callchain_hits(he); |
| 1697 | next = rb_next(&he->rb_node); |
| 1698 | } |
| 1699 | |
| 1700 | return chain_hits; |
| 1701 | } |
Jin Yao | 5bbd6ba | 2020-10-09 10:28:44 +0800 | [diff] [blame] | 1702 | |
| 1703 | s64 callchain_avg_cycles(struct callchain_node *cnode) |
| 1704 | { |
| 1705 | struct callchain_list *chain; |
| 1706 | s64 cycles = 0; |
| 1707 | |
| 1708 | list_for_each_entry(chain, &cnode->val, list) { |
| 1709 | if (chain->srcline && chain->branch_count) |
| 1710 | cycles += chain->cycles_count / chain->branch_count; |
| 1711 | } |
| 1712 | |
| 1713 | return cycles; |
| 1714 | } |