tools/perf/util/annotate.h

   1 #ifndef __PERF_ANNOTATE_H
   2 #define __PERF_ANNOTATE_H
   3
   4 #include <stdbool.h>
   5 #include <stdint.h>
   6 #include <linux/types.h>
   7 #include "symbol.h"
   8 #include "hist.h"
   9 #include "sort.h"
  10 #include <linux/list.h>
  11 #include <linux/rbtree.h>
  12 #include <pthread.h>
  13
  14 struct ins;
  15
  16 struct ins_operands {
  17         char    *raw;
  18         struct {
  19                 char    *raw;
  20                 char    *name;
  21                 u64     addr;
  22                 u64     offset;
  23         } target;
  24         union {
  25                 struct {
  26                         char    *raw;
  27                         char    *name;
  28                         u64     addr;
  29                 } source;
  30                 struct {
  31                         struct ins *ins;
  32                         struct ins_operands *ops;
  33                 } locked;
  34         };
  35 };
  36
  37 struct ins_ops {
  38         void (*free)(struct ins_operands *ops);
  39         int (*parse)(struct ins_operands *ops);
  40         int (*scnprintf)(struct ins *ins, char *bf, size_t size,
  41                          struct ins_operands *ops);
  42 };
  43
  44 struct ins {
  45         const char     *name;
  46         struct ins_ops *ops;
  47 };
  48
  49 bool ins__is_jump(const struct ins *ins);
  50 bool ins__is_call(const struct ins *ins);
  51 bool ins__is_ret(const struct ins *ins);
  52 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
  53
  54 struct annotation;
  55
  56 struct disasm_line {
  57         struct list_head    node;
  58         s64                 offset;
  59         char                *line;
  60         char                *name;
  61         struct ins          *ins;
  62         int                 line_nr;
  63         float               ipc;
  64         u64                 cycles;
  65         struct ins_operands ops;
  66 };
  67
  68 static inline bool disasm_line__has_offset(const struct disasm_line *dl)
  69 {
  70         return dl->ops.target.offset != UINT64_MAX;
  71 }
  72
  73 void disasm_line__free(struct disasm_line *dl);
  74 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
  75 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
  76 size_t disasm__fprintf(struct list_head *head, FILE *fp);
  77 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
  78                             s64 end, const char **path, u64 *nr_samples);
  79
  80 struct sym_hist {
  81         u64             sum;
  82         u64             addr[0];
  83 };
  84
  85 struct cyc_hist {
  86         u64     start;
  87         u64     cycles;
  88         u64     cycles_aggr;
  89         u32     num;
  90         u32     num_aggr;
  91         u8      have_start;
  92         /* 1 byte padding */
  93         u16     reset;
  94 };
  95
  96 struct source_line_samples {
  97         double          percent;
  98         double          percent_sum;
  99         double          nr;
 100 };
 101
 102 struct source_line {
 103         struct rb_node  node;
 104         char            *path;
 105         int             nr_pcnt;
 106         struct source_line_samples samples[1];
 107 };
 108
 109 /** struct annotated_source - symbols with hits have this attached as in sannotation
 110  *
 111  * @histogram: Array of addr hit histograms per event being monitored
 112  * @lines: If 'print_lines' is specified, per source code line percentages
 113  * @source: source parsed from a disassembler like objdump -dS
 114  * @cyc_hist: Average cycles per basic block
 115  *
 116  * lines is allocated, percentages calculated and all sorted by percentage
 117  * when the annotation is about to be presented, so the percentages are for
 118  * one of the entries in the histogram array, i.e. for the event/counter being
 119  * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 120  * returns.
 121  */
 122 struct annotated_source {
 123         struct list_head   source;
 124         struct source_line *lines;
 125         int                nr_histograms;
 126         size_t             sizeof_sym_hist;
 127         struct cyc_hist    *cycles_hist;
 128         struct sym_hist    histograms[0];
 129 };
 130
 131 struct annotation {
 132         pthread_mutex_t         lock;
 133         struct annotated_source *src;
 134 };
 135
 136 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
 137 {
 138         return (((void *)&notes->src->histograms) +
 139                 (notes->src->sizeof_sym_hist * idx));
 140 }
 141
 142 static inline struct annotation *symbol__annotation(struct symbol *sym)
 143 {
 144         return (void *)sym - symbol_conf.priv_size;
 145 }
 146
 147 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx);
 148
 149 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 150                                     struct addr_map_symbol *start,
 151                                     unsigned cycles);
 152
 153 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 addr);
 154
 155 int symbol__alloc_hist(struct symbol *sym);
 156 void symbol__annotate_zero_histograms(struct symbol *sym);
 157
 158 int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize);
 159
 160 enum symbol_disassemble_errno {
 161         SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,
 162
 163         /*
 164          * Choose an arbitrary negative big number not to clash with standard
 165          * errno since SUS requires the errno has distinct positive values.
 166          * See 'Issue 6' in the link below.
 167          *
 168          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
 169          */
 170         __SYMBOL_ANNOTATE_ERRNO__START          = -10000,
 171
 172         SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,
 173
 174         __SYMBOL_ANNOTATE_ERRNO__END,
 175 };
 176
 177 int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
 178                                  int errnum, char *buf, size_t buflen);
 179
 180 int symbol__annotate_init(struct map *map, struct symbol *sym);
 181 int symbol__annotate_printf(struct symbol *sym, struct map *map,
 182                             struct perf_evsel *evsel, bool full_paths,
 183                             int min_pcnt, int max_lines, int context);
 184 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
 185 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
 186 void disasm__purge(struct list_head *head);
 187
 188 bool ui__has_annotation(void);
 189
 190 int symbol__tty_annotate(struct symbol *sym, struct map *map,
 191                          struct perf_evsel *evsel, bool print_lines,
 192                          bool full_paths, int min_pcnt, int max_lines);
 193
 194 #ifdef HAVE_SLANG_SUPPORT
 195 int symbol__tui_annotate(struct symbol *sym, struct map *map,
 196                          struct perf_evsel *evsel,
 197                          struct hist_browser_timer *hbt);
 198 #else
 199 static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
 200                                 struct map *map __maybe_unused,
 201                                 struct perf_evsel *evsel  __maybe_unused,
 202                                 struct hist_browser_timer *hbt
 203                                 __maybe_unused)
 204 {
 205         return 0;
 206 }
 207 #endif
 208
 209 extern const char       *disassembler_style;
 210
 211 #endif  /* __PERF_ANNOTATE_H */