tools/perf/util/annotate.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_ANNOTATE_H
   3 #define __PERF_ANNOTATE_H
   4
   5 #include <stdbool.h>
   6 #include <stdint.h>
   7 #include <stdio.h>
   8 #include <linux/types.h>
   9 #include <linux/list.h>
  10 #include <linux/rbtree.h>
  11 #include <pthread.h>
  12 #include <asm/bug.h>
  13 #include "symbol_conf.h"
  14 #include "spark.h"
  15
  16 struct hist_browser_timer;
  17 struct hist_entry;
  18 struct ins_ops;
  19 struct map;
  20 struct map_symbol;
  21 struct addr_map_symbol;
  22 struct option;
  23 struct perf_sample;
  24 struct evsel;
  25 struct symbol;
  26
  27 struct ins {
  28         const char     *name;
  29         struct ins_ops *ops;
  30 };
  31
  32 struct ins_operands {
  33         char    *raw;
  34         char    *raw_comment;
  35         struct {
  36                 char    *raw;
  37                 char    *name;
  38                 struct symbol *sym;
  39                 u64     addr;
  40                 s64     offset;
  41                 bool    offset_avail;
  42                 bool    outside;
  43         } target;
  44         union {
  45                 struct {
  46                         char    *raw;
  47                         char    *name;
  48                         u64     addr;
  49                 } source;
  50                 struct {
  51                         struct ins          ins;
  52                         struct ins_operands *ops;
  53                 } locked;
  54         };
  55 };
  56
  57 struct arch;
  58
  59 struct ins_ops {
  60         void (*free)(struct ins_operands *ops);
  61         int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
  62         int (*scnprintf)(struct ins *ins, char *bf, size_t size,
  63                          struct ins_operands *ops, int max_ins_name);
  64 };
  65
  66 bool ins__is_jump(const struct ins *ins);
  67 bool ins__is_call(const struct ins *ins);
  68 bool ins__is_ret(const struct ins *ins);
  69 bool ins__is_lock(const struct ins *ins);
  70 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops, int max_ins_name);
  71 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
  72
  73 #define ANNOTATION__IPC_WIDTH 6
  74 #define ANNOTATION__CYCLES_WIDTH 6
  75 #define ANNOTATION__MINMAX_CYCLES_WIDTH 19
  76 #define ANNOTATION__AVG_IPC_WIDTH 36
  77
  78 struct annotation_options {
  79         bool hide_src_code,
  80              use_offset,
  81              jump_arrows,
  82              print_lines,
  83              full_path,
  84              show_linenr,
  85              show_nr_jumps,
  86              show_nr_samples,
  87              show_total_period,
  88              show_minmax_cycle,
  89              show_asm_raw,
  90              annotate_src;
  91         u8   offset_level;
  92         int  min_pcnt;
  93         int  max_lines;
  94         int  context;
  95         const char *objdump_path;
  96         const char *disassembler_style;
  97         const char *prefix;
  98         const char *prefix_strip;
  99         unsigned int percent_type;
 100 };
 101
 102 enum {
 103         ANNOTATION__OFFSET_JUMP_TARGETS = 1,
 104         ANNOTATION__OFFSET_CALL,
 105         ANNOTATION__MAX_OFFSET_LEVEL,
 106 };
 107
 108 #define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS
 109
 110 extern struct annotation_options annotation__default_options;
 111
 112 struct annotation;
 113
 114 struct sym_hist_entry {
 115         u64             nr_samples;
 116         u64             period;
 117 };
 118
 119 enum {
 120         PERCENT_HITS_LOCAL,
 121         PERCENT_HITS_GLOBAL,
 122         PERCENT_PERIOD_LOCAL,
 123         PERCENT_PERIOD_GLOBAL,
 124         PERCENT_MAX,
 125 };
 126
 127 struct annotation_data {
 128         double                   percent[PERCENT_MAX];
 129         double                   percent_sum;
 130         struct sym_hist_entry    he;
 131 };
 132
 133 struct annotation_line {
 134         struct list_head         node;
 135         struct rb_node           rb_node;
 136         s64                      offset;
 137         char                    *line;
 138         int                      line_nr;
 139         int                      jump_sources;
 140         float                    ipc;
 141         u64                      cycles;
 142         u64                      cycles_max;
 143         u64                      cycles_min;
 144         size_t                   privsize;
 145         char                    *path;
 146         u32                      idx;
 147         int                      idx_asm;
 148         int                      data_nr;
 149         struct annotation_data   data[0];
 150 };
 151
 152 struct disasm_line {
 153         struct ins               ins;
 154         struct ins_operands      ops;
 155
 156         /* This needs to be at the end. */
 157         struct annotation_line   al;
 158 };
 159
 160 static inline double annotation_data__percent(struct annotation_data *data,
 161                                               unsigned int which)
 162 {
 163         return which < PERCENT_MAX ? data->percent[which] : -1;
 164 }
 165
 166 static inline const char *percent_type_str(unsigned int type)
 167 {
 168         static const char *str[PERCENT_MAX] = {
 169                 "local hits",
 170                 "global hits",
 171                 "local period",
 172                 "global period",
 173         };
 174
 175         if (WARN_ON(type >= PERCENT_MAX))
 176                 return "N/A";
 177
 178         return str[type];
 179 }
 180
 181 static inline struct disasm_line *disasm_line(struct annotation_line *al)
 182 {
 183         return al ? container_of(al, struct disasm_line, al) : NULL;
 184 }
 185
 186 /*
 187  * Is this offset in the same function as the line it is used?
 188  * asm functions jump to other functions, for instance.
 189  */
 190 static inline bool disasm_line__has_local_offset(const struct disasm_line *dl)
 191 {
 192         return dl->ops.target.offset_avail && !dl->ops.target.outside;
 193 }
 194
 195 /*
 196  * Can we draw an arrow from the jump to its target, for instance? I.e.
 197  * is the jump and its target in the same function?
 198  */
 199 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym);
 200
 201 void disasm_line__free(struct disasm_line *dl);
 202 struct annotation_line *
 203 annotation_line__next(struct annotation_line *pos, struct list_head *head);
 204
 205 struct annotation_write_ops {
 206         bool first_line, current_entry, change_color;
 207         int  width;
 208         void *obj;
 209         int  (*set_color)(void *obj, int color);
 210         void (*set_percent_color)(void *obj, double percent, bool current);
 211         int  (*set_jumps_percent_color)(void *obj, int nr, bool current);
 212         void (*printf)(void *obj, const char *fmt, ...);
 213         void (*write_graph)(void *obj, int graph);
 214 };
 215
 216 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
 217                             struct annotation_write_ops *ops,
 218                             struct annotation_options *opts);
 219
 220 int __annotation__scnprintf_samples_period(struct annotation *notes,
 221                                            char *bf, size_t size,
 222                                            struct evsel *evsel,
 223                                            bool show_freq);
 224
 225 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name);
 226 size_t disasm__fprintf(struct list_head *head, FILE *fp);
 227 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel);
 228
 229 struct sym_hist {
 230         u64                   nr_samples;
 231         u64                   period;
 232         struct sym_hist_entry addr[0];
 233 };
 234
 235 struct cyc_hist {
 236         u64     start;
 237         u64     cycles;
 238         u64     cycles_aggr;
 239         u64     cycles_max;
 240         u64     cycles_min;
 241         s64     cycles_spark[NUM_SPARKS];
 242         u32     num;
 243         u32     num_aggr;
 244         u8      have_start;
 245         /* 1 byte padding */
 246         u16     reset;
 247 };
 248
 249 /** struct annotated_source - symbols with hits have this attached as in sannotation
 250  *
 251  * @histograms: Array of addr hit histograms per event being monitored
 252  * nr_histograms: This may not be the same as evsel->evlist->core.nr_entries if
 253  *                we have more than a group in a evlist, where we will want
 254  *                to see each group separately, that is why symbol__annotate2()
 255  *                sets src->nr_histograms to evsel->nr_members.
 256  * @lines: If 'print_lines' is specified, per source code line percentages
 257  * @source: source parsed from a disassembler like objdump -dS
 258  * @cyc_hist: Average cycles per basic block
 259  *
 260  * lines is allocated, percentages calculated and all sorted by percentage
 261  * when the annotation is about to be presented, so the percentages are for
 262  * one of the entries in the histogram array, i.e. for the event/counter being
 263  * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 264  * returns.
 265  */
 266 struct annotated_source {
 267         struct list_head   source;
 268         int                nr_histograms;
 269         size_t             sizeof_sym_hist;
 270         struct cyc_hist    *cycles_hist;
 271         struct sym_hist    *histograms;
 272 };
 273
 274 struct annotation {
 275         pthread_mutex_t         lock;
 276         u64                     max_coverage;
 277         u64                     start;
 278         u64                     hit_cycles;
 279         u64                     hit_insn;
 280         unsigned int            total_insn;
 281         unsigned int            cover_insn;
 282         struct annotation_options *options;
 283         struct annotation_line  **offsets;
 284         int                     nr_events;
 285         int                     nr_jumps;
 286         int                     max_jump_sources;
 287         int                     nr_entries;
 288         int                     nr_asm_entries;
 289         u16                     max_line_len;
 290         struct {
 291                 u8              addr;
 292                 u8              jumps;
 293                 u8              target;
 294                 u8              min_addr;
 295                 u8              max_addr;
 296                 u8              max_ins_name;
 297         } widths;
 298         bool                    have_cycles;
 299         struct annotated_source *src;
 300 };
 301
 302 static inline int annotation__cycles_width(struct annotation *notes)
 303 {
 304         if (notes->have_cycles && notes->options->show_minmax_cycle)
 305                 return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH;
 306
 307         return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
 308 }
 309
 310 static inline int annotation__pcnt_width(struct annotation *notes)
 311 {
 312         return (notes->options->show_total_period ? 12 : 7) * notes->nr_events;
 313 }
 314
 315 static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
 316 {
 317         return notes->options->hide_src_code && al->offset == -1;
 318 }
 319
 320 void annotation__set_offsets(struct annotation *notes, s64 size);
 321 void annotation__compute_ipc(struct annotation *notes, size_t size);
 322 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
 323 void annotation__update_column_widths(struct annotation *notes);
 324 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);
 325
 326 static inline struct sym_hist *annotated_source__histogram(struct annotated_source *src, int idx)
 327 {
 328         return ((void *)src->histograms) + (src->sizeof_sym_hist * idx);
 329 }
 330
 331 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
 332 {
 333         return annotated_source__histogram(notes->src, idx);
 334 }
 335
 336 static inline struct annotation *symbol__annotation(struct symbol *sym)
 337 {
 338         return (void *)sym - symbol_conf.priv_size;
 339 }
 340
 341 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
 342                                  struct evsel *evsel);
 343
 344 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 345                                     struct addr_map_symbol *start,
 346                                     unsigned cycles);
 347
 348 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
 349                                  struct evsel *evsel, u64 addr);
 350
 351 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists);
 352 void symbol__annotate_zero_histograms(struct symbol *sym);
 353
 354 int symbol__annotate(struct map_symbol *ms,
 355                      struct evsel *evsel, size_t privsize,
 356                      struct annotation_options *options,
 357                      struct arch **parch);
 358 int symbol__annotate2(struct map_symbol *ms,
 359                       struct evsel *evsel,
 360                       struct annotation_options *options,
 361                       struct arch **parch);
 362
 363 enum symbol_disassemble_errno {
 364         SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,
 365
 366         /*
 367          * Choose an arbitrary negative big number not to clash with standard
 368          * errno since SUS requires the errno has distinct positive values.
 369          * See 'Issue 6' in the link below.
 370          *
 371          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
 372          */
 373         __SYMBOL_ANNOTATE_ERRNO__START          = -10000,
 374
 375         SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,
 376         SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF,
 377         SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING,
 378         SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP,
 379         SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE,
 380         SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF,
 381
 382         __SYMBOL_ANNOTATE_ERRNO__END,
 383 };
 384
 385 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen);
 386
 387 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
 388                             struct annotation_options *options);
 389 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
 390 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
 391 void annotated_source__purge(struct annotated_source *as);
 392
 393 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
 394                                 struct annotation_options *opts);
 395
 396 bool ui__has_annotation(void);
 397
 398 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
 399
 400 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
 401
 402 #ifdef HAVE_SLANG_SUPPORT
 403 int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 404                          struct hist_browser_timer *hbt,
 405                          struct annotation_options *opts);
 406 #else
 407 static inline int symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
 408                                 struct evsel *evsel  __maybe_unused,
 409                                 struct hist_browser_timer *hbt __maybe_unused,
 410                                 struct annotation_options *opts __maybe_unused)
 411 {
 412         return 0;
 413 }
 414 #endif
 415
 416 void annotation_config__init(void);
 417
 418 int annotate_parse_percent_type(const struct option *opt, const char *_str,
 419                                 int unset);
 420
 421 int annotate_check_args(struct annotation_options *args);
 422
 423 #endif  /* __PERF_ANNOTATE_H */