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