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[J-linux.git] / 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 <asm/bug.h>
12 #include "symbol_conf.h"
13 #include "mutex.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         char    *raw_func_start;
36         struct {
37                 char    *raw;
38                 char    *name;
39                 struct symbol *sym;
40                 u64     addr;
41                 s64     offset;
42                 bool    offset_avail;
43                 bool    outside;
44         } target;
45         union {
46                 struct {
47                         char    *raw;
48                         char    *name;
49                         u64     addr;
50                 } source;
51                 struct {
52                         struct ins          ins;
53                         struct ins_operands *ops;
54                 } locked;
55         };
56 };
57
58 struct arch;
59
60 struct ins_ops {
61         void (*free)(struct ins_operands *ops);
62         int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
63         int (*scnprintf)(struct ins *ins, char *bf, size_t size,
64                          struct ins_operands *ops, int max_ins_name);
65 };
66
67 bool ins__is_jump(const struct ins *ins);
68 bool ins__is_call(const struct ins *ins);
69 bool ins__is_ret(const struct ins *ins);
70 bool ins__is_lock(const struct ins *ins);
71 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops, int max_ins_name);
72 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
73
74 #define ANNOTATION__IPC_WIDTH 6
75 #define ANNOTATION__CYCLES_WIDTH 6
76 #define ANNOTATION__MINMAX_CYCLES_WIDTH 19
77 #define ANNOTATION__AVG_IPC_WIDTH 36
78 #define ANNOTATION_DUMMY_LEN    256
79
80 struct annotation_options {
81         bool hide_src_code,
82              use_offset,
83              jump_arrows,
84              print_lines,
85              full_path,
86              show_linenr,
87              show_fileloc,
88              show_nr_jumps,
89              show_minmax_cycle,
90              show_asm_raw,
91              annotate_src,
92              full_addr;
93         u8   offset_level;
94         int  min_pcnt;
95         int  max_lines;
96         int  context;
97         char *objdump_path;
98         char *disassembler_style;
99         const char *prefix;
100         const char *prefix_strip;
101         unsigned int percent_type;
102 };
103
104 enum {
105         ANNOTATION__OFFSET_JUMP_TARGETS = 1,
106         ANNOTATION__OFFSET_CALL,
107         ANNOTATION__MAX_OFFSET_LEVEL,
108 };
109
110 #define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS
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         char                    *fileloc;
140         int                      jump_sources;
141         float                    ipc;
142         u64                      cycles;
143         u64                      cycles_max;
144         u64                      cycles_min;
145         char                    *path;
146         u32                      idx;
147         int                      idx_asm;
148         int                      data_nr;
149         struct annotation_data   data[];
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[];
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         struct mutex 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                     max_jump_sources;
286         int                     nr_entries;
287         int                     nr_asm_entries;
288         u16                     max_line_len;
289         struct {
290                 u8              addr;
291                 u8              jumps;
292                 u8              target;
293                 u8              min_addr;
294                 u8              max_addr;
295                 u8              max_ins_name;
296         } widths;
297         bool                    have_cycles;
298         struct annotated_source *src;
299 };
300
301 void annotation__init(struct annotation *notes);
302 void annotation__exit(struct annotation *notes);
303
304 static inline int annotation__cycles_width(struct annotation *notes)
305 {
306         if (notes->have_cycles && notes->options->show_minmax_cycle)
307                 return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH;
308
309         return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
310 }
311
312 static inline int annotation__pcnt_width(struct annotation *notes)
313 {
314         return (symbol_conf.show_total_period ? 12 : 7) * notes->nr_events;
315 }
316
317 static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
318 {
319         return notes->options->hide_src_code && al->offset == -1;
320 }
321
322 void annotation__set_offsets(struct annotation *notes, s64 size);
323 void annotation__compute_ipc(struct annotation *notes, size_t size);
324 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
325 void annotation__update_column_widths(struct annotation *notes);
326 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);
327 void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *ms);
328
329 static inline struct sym_hist *annotated_source__histogram(struct annotated_source *src, int idx)
330 {
331         return ((void *)src->histograms) + (src->sizeof_sym_hist * idx);
332 }
333
334 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
335 {
336         return annotated_source__histogram(notes->src, idx);
337 }
338
339 static inline struct annotation *symbol__annotation(struct symbol *sym)
340 {
341         return (void *)sym - symbol_conf.priv_size;
342 }
343
344 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
345                                  struct evsel *evsel);
346
347 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
348                                     struct addr_map_symbol *start,
349                                     unsigned cycles);
350
351 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
352                                  struct evsel *evsel, u64 addr);
353
354 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists);
355 void symbol__annotate_zero_histograms(struct symbol *sym);
356
357 int symbol__annotate(struct map_symbol *ms,
358                      struct evsel *evsel,
359                      struct annotation_options *options,
360                      struct arch **parch);
361 int symbol__annotate2(struct map_symbol *ms,
362                       struct evsel *evsel,
363                       struct annotation_options *options,
364                       struct arch **parch);
365
366 enum symbol_disassemble_errno {
367         SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,
368
369         /*
370          * Choose an arbitrary negative big number not to clash with standard
371          * errno since SUS requires the errno has distinct positive values.
372          * See 'Issue 6' in the link below.
373          *
374          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
375          */
376         __SYMBOL_ANNOTATE_ERRNO__START          = -10000,
377
378         SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,
379         SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF,
380         SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING,
381         SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP,
382         SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE,
383         SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF,
384
385         __SYMBOL_ANNOTATE_ERRNO__END,
386 };
387
388 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen);
389
390 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
391                             struct annotation_options *options);
392 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
393 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
394 void annotated_source__purge(struct annotated_source *as);
395
396 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
397                                 struct annotation_options *opts);
398
399 bool ui__has_annotation(void);
400
401 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
402
403 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
404
405 #ifdef HAVE_SLANG_SUPPORT
406 int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
407                          struct hist_browser_timer *hbt,
408                          struct annotation_options *opts);
409 #else
410 static inline int symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
411                                 struct evsel *evsel  __maybe_unused,
412                                 struct hist_browser_timer *hbt __maybe_unused,
413                                 struct annotation_options *opts __maybe_unused)
414 {
415         return 0;
416 }
417 #endif
418
419 void annotation_options__init(struct annotation_options *opt);
420 void annotation_options__exit(struct annotation_options *opt);
421
422 void annotation_config__init(struct annotation_options *opt);
423
424 int annotate_parse_percent_type(const struct option *opt, const char *_str,
425                                 int unset);
426
427 int annotate_check_args(struct annotation_options *args);
428
429 #endif  /* __PERF_ANNOTATE_H */
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