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
  15 struct ins_ops;
  16
  17 struct ins {
  18         const char     *name;
  19         struct ins_ops *ops;
  20 };
  21
  22 struct ins_operands {
  23         char    *raw;
  24         struct {
  25                 char    *raw;
  26                 char    *name;
  27                 struct symbol *sym;
  28                 u64     addr;
  29                 s64     offset;
  30                 bool    offset_avail;
  31                 bool    outside;
  32         } target;
  33         union {
  34                 struct {
  35                         char    *raw;
  36                         char    *name;
  37                         u64     addr;
  38                 } source;
  39                 struct {
  40                         struct ins          ins;
  41                         struct ins_operands *ops;
  42                 } locked;
  43         };
  44 };
  45
  46 struct arch;
  47
  48 struct ins_ops {
  49         void (*free)(struct ins_operands *ops);
  50         int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
  51         int (*scnprintf)(struct ins *ins, char *bf, size_t size,
  52                          struct ins_operands *ops);
  53 };
  54
  55 bool ins__is_jump(const struct ins *ins);
  56 bool ins__is_call(const struct ins *ins);
  57 bool ins__is_ret(const struct ins *ins);
  58 bool ins__is_lock(const struct ins *ins);
  59 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
  60 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
  61
  62 #define ANNOTATION__IPC_WIDTH 6
  63 #define ANNOTATION__CYCLES_WIDTH 6
  64 #define ANNOTATION__MINMAX_CYCLES_WIDTH 19
  65
  66 struct annotation_options {
  67         bool hide_src_code,
  68              use_offset,
  69              jump_arrows,
  70              show_linenr,
  71              show_nr_jumps,
  72              show_nr_samples,
  73              show_total_period,
  74              show_minmax_cycle;
  75         u8   offset_level;
  76 };
  77
  78 enum {
  79         ANNOTATION__OFFSET_JUMP_TARGETS = 1,
  80         ANNOTATION__OFFSET_CALL,
  81         ANNOTATION__MAX_OFFSET_LEVEL,
  82 };
  83
  84 #define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS
  85
  86 extern struct annotation_options annotation__default_options;
  87
  88 struct annotation;
  89
  90 struct sym_hist_entry {
  91         u64             nr_samples;
  92         u64             period;
  93 };
  94
  95 struct annotation_data {
  96         double                   percent;
  97         double                   percent_sum;
  98         struct sym_hist_entry    he;
  99 };
 100
 101 struct annotation_line {
 102         struct list_head         node;
 103         struct rb_node           rb_node;
 104         s64                      offset;
 105         char                    *line;
 106         int                      line_nr;
 107         int                      jump_sources;
 108         float                    ipc;
 109         u64                      cycles;
 110         u64                      cycles_max;
 111         u64                      cycles_min;
 112         size_t                   privsize;
 113         char                    *path;
 114         u32                      idx;
 115         int                      idx_asm;
 116         int                      samples_nr;
 117         struct annotation_data   samples[0];
 118 };
 119
 120 struct disasm_line {
 121         struct ins               ins;
 122         struct ins_operands      ops;
 123
 124         /* This needs to be at the end. */
 125         struct annotation_line   al;
 126 };
 127
 128 static inline struct disasm_line *disasm_line(struct annotation_line *al)
 129 {
 130         return al ? container_of(al, struct disasm_line, al) : NULL;
 131 }
 132
 133 /*
 134  * Is this offset in the same function as the line it is used?
 135  * asm functions jump to other functions, for instance.
 136  */
 137 static inline bool disasm_line__has_local_offset(const struct disasm_line *dl)
 138 {
 139         return dl->ops.target.offset_avail && !dl->ops.target.outside;
 140 }
 141
 142 /*
 143  * Can we draw an arrow from the jump to its target, for instance? I.e.
 144  * is the jump and its target in the same function?
 145  */
 146 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym);
 147
 148 void disasm_line__free(struct disasm_line *dl);
 149 struct annotation_line *
 150 annotation_line__next(struct annotation_line *pos, struct list_head *head);
 151
 152 struct annotation_write_ops {
 153         bool first_line, current_entry, change_color;
 154         int  width;
 155         void *obj;
 156         int  (*set_color)(void *obj, int color);
 157         void (*set_percent_color)(void *obj, double percent, bool current);
 158         int  (*set_jumps_percent_color)(void *obj, int nr, bool current);
 159         void (*printf)(void *obj, const char *fmt, ...);
 160         void (*write_graph)(void *obj, int graph);
 161 };
 162
 163 double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes);
 164 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
 165                             struct annotation_write_ops *ops);
 166
 167 int __annotation__scnprintf_samples_period(struct annotation *notes,
 168                                            char *bf, size_t size,
 169                                            struct perf_evsel *evsel,
 170                                            bool show_freq);
 171
 172 static inline int annotation__scnprintf_samples_period(struct annotation *notes,
 173                                                        char *bf, size_t size,
 174                                                        struct perf_evsel *evsel)
 175 {
 176         return __annotation__scnprintf_samples_period(notes, bf, size, evsel, true);
 177 }
 178
 179 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
 180 size_t disasm__fprintf(struct list_head *head, FILE *fp);
 181 void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);
 182
 183 struct sym_hist {
 184         u64                   nr_samples;
 185         u64                   period;
 186         struct sym_hist_entry addr[0];
 187 };
 188
 189 struct cyc_hist {
 190         u64     start;
 191         u64     cycles;
 192         u64     cycles_aggr;
 193         u64     cycles_max;
 194         u64     cycles_min;
 195         u32     num;
 196         u32     num_aggr;
 197         u8      have_start;
 198         /* 1 byte padding */
 199         u16     reset;
 200 };
 201
 202 /** struct annotated_source - symbols with hits have this attached as in sannotation
 203  *
 204  * @histogram: Array of addr hit histograms per event being monitored
 205  * @lines: If 'print_lines' is specified, per source code line percentages
 206  * @source: source parsed from a disassembler like objdump -dS
 207  * @cyc_hist: Average cycles per basic block
 208  *
 209  * lines is allocated, percentages calculated and all sorted by percentage
 210  * when the annotation is about to be presented, so the percentages are for
 211  * one of the entries in the histogram array, i.e. for the event/counter being
 212  * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 213  * returns.
 214  */
 215 struct annotated_source {
 216         struct list_head   source;
 217         int                nr_histograms;
 218         size_t             sizeof_sym_hist;
 219         struct cyc_hist    *cycles_hist;
 220         struct sym_hist    histograms[0];
 221 };
 222
 223 struct annotation {
 224         pthread_mutex_t         lock;
 225         u64                     max_coverage;
 226         u64                     start;
 227         struct annotation_options *options;
 228         struct annotation_line  **offsets;
 229         int                     nr_events;
 230         int                     nr_jumps;
 231         int                     max_jump_sources;
 232         int                     nr_entries;
 233         int                     nr_asm_entries;
 234         u16                     max_line_len;
 235         struct {
 236                 u8              addr;
 237                 u8              jumps;
 238                 u8              target;
 239                 u8              min_addr;
 240                 u8              max_addr;
 241         } widths;
 242         bool                    have_cycles;
 243         struct annotated_source *src;
 244 };
 245
 246 static inline int annotation__cycles_width(struct annotation *notes)
 247 {
 248         if (notes->have_cycles && notes->options->show_minmax_cycle)
 249                 return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH;
 250
 251         return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
 252 }
 253
 254 static inline int annotation__pcnt_width(struct annotation *notes)
 255 {
 256         return (notes->options->show_total_period ? 12 : 7) * notes->nr_events;
 257 }
 258
 259 static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
 260 {
 261         return notes->options->hide_src_code && al->offset == -1;
 262 }
 263
 264 void annotation__set_offsets(struct annotation *notes, s64 size);
 265 void annotation__compute_ipc(struct annotation *notes, size_t size);
 266 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
 267 void annotation__update_column_widths(struct annotation *notes);
 268 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);
 269
 270 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
 271 {
 272         return (((void *)&notes->src->histograms) +
 273                 (notes->src->sizeof_sym_hist * idx));
 274 }
 275
 276 static inline struct annotation *symbol__annotation(struct symbol *sym)
 277 {
 278         return (void *)sym - symbol_conf.priv_size;
 279 }
 280
 281 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
 282                                  struct perf_evsel *evsel);
 283
 284 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 285                                     struct addr_map_symbol *start,
 286                                     unsigned cycles);
 287
 288 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
 289                                  struct perf_evsel *evsel, u64 addr);
 290
 291 int symbol__alloc_hist(struct symbol *sym);
 292 void symbol__annotate_zero_histograms(struct symbol *sym);
 293
 294 int symbol__annotate(struct symbol *sym, struct map *map,
 295                      struct perf_evsel *evsel, size_t privsize,
 296                      struct arch **parch);
 297 int symbol__annotate2(struct symbol *sym, struct map *map,
 298                       struct perf_evsel *evsel,
 299                       struct annotation_options *options,
 300                       struct arch **parch);
 301
 302 enum symbol_disassemble_errno {
 303         SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,
 304
 305         /*
 306          * Choose an arbitrary negative big number not to clash with standard
 307          * errno since SUS requires the errno has distinct positive values.
 308          * See 'Issue 6' in the link below.
 309          *
 310          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
 311          */
 312         __SYMBOL_ANNOTATE_ERRNO__START          = -10000,
 313
 314         SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,
 315
 316         __SYMBOL_ANNOTATE_ERRNO__END,
 317 };
 318
 319 int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
 320                                  int errnum, char *buf, size_t buflen);
 321
 322 int symbol__annotate_printf(struct symbol *sym, struct map *map,
 323                             struct perf_evsel *evsel, bool full_paths,
 324                             int min_pcnt, int max_lines, int context);
 325 int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp);
 326 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
 327 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
 328 void annotated_source__purge(struct annotated_source *as);
 329
 330 int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel);
 331
 332 bool ui__has_annotation(void);
 333
 334 int symbol__tty_annotate(struct symbol *sym, struct map *map,
 335                          struct perf_evsel *evsel, bool print_lines,
 336                          bool full_paths, int min_pcnt, int max_lines);
 337
 338 int symbol__tty_annotate2(struct symbol *sym, struct map *map,
 339                           struct perf_evsel *evsel, bool print_lines,
 340                           bool full_paths);
 341
 342 #ifdef HAVE_SLANG_SUPPORT
 343 int symbol__tui_annotate(struct symbol *sym, struct map *map,
 344                          struct perf_evsel *evsel,
 345                          struct hist_browser_timer *hbt);
 346 #else
 347 static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
 348                                 struct map *map __maybe_unused,
 349                                 struct perf_evsel *evsel  __maybe_unused,
 350                                 struct hist_browser_timer *hbt
 351                                 __maybe_unused)
 352 {
 353         return 0;
 354 }
 355 #endif
 356
 357 extern const char       *disassembler_style;
 358
 359 void annotation_config__init(void);
 360
 361 #endif  /* __PERF_ANNOTATE_H */