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_ops;
  15
  16 struct ins {
  17         const char     *name;
  18         struct ins_ops *ops;
  19 };
  20
  21 struct ins_operands {
  22         char    *raw;
  23         struct {
  24                 char    *raw;
  25                 char    *name;
  26                 u64     addr;
  27                 s64     offset;
  28                 bool    offset_avail;
  29         } target;
  30         union {
  31                 struct {
  32                         char    *raw;
  33                         char    *name;
  34                         u64     addr;
  35                 } source;
  36                 struct {
  37                         struct ins          ins;
  38                         struct ins_operands *ops;
  39                 } locked;
  40         };
  41 };
  42
  43 struct arch;
  44
  45 struct ins_ops {
  46         void (*free)(struct ins_operands *ops);
  47         int (*parse)(struct arch *arch, struct ins_operands *ops, struct map *map);
  48         int (*scnprintf)(struct ins *ins, char *bf, size_t size,
  49                          struct ins_operands *ops);
  50 };
  51
  52 bool ins__is_jump(const struct ins *ins);
  53 bool ins__is_call(const struct ins *ins);
  54 bool ins__is_ret(const struct ins *ins);
  55 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
  56
  57 struct annotation;
  58
  59 struct disasm_line {
  60         struct list_head    node;
  61         s64                 offset;
  62         char                *line;
  63         struct ins          ins;
  64         int                 line_nr;
  65         float               ipc;
  66         u64                 cycles;
  67         struct ins_operands ops;
  68 };
  69
  70 static inline bool disasm_line__has_offset(const struct disasm_line *dl)
  71 {
  72         return dl->ops.target.offset_avail;
  73 }
  74
  75 void disasm_line__free(struct disasm_line *dl);
  76 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
  77 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
  78 size_t disasm__fprintf(struct list_head *head, FILE *fp);
  79 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
  80                             s64 end, const char **path, u64 *nr_samples);
  81
  82 struct sym_hist {
  83         u64             sum;
  84         u64             addr[0];
  85 };
  86
  87 struct cyc_hist {
  88         u64     start;
  89         u64     cycles;
  90         u64     cycles_aggr;
  91         u32     num;
  92         u32     num_aggr;
  93         u8      have_start;
  94         /* 1 byte padding */
  95         u16     reset;
  96 };
  97
  98 struct source_line_samples {
  99         double          percent;
 100         double          percent_sum;
 101         u64             nr;
 102 };
 103
 104 struct source_line {
 105         struct rb_node  node;
 106         char            *path;
 107         int             nr_pcnt;
 108         struct source_line_samples samples[1];
 109 };
 110
 111 /** struct annotated_source - symbols with hits have this attached as in sannotation
 112  *
 113  * @histogram: Array of addr hit histograms per event being monitored
 114  * @lines: If 'print_lines' is specified, per source code line percentages
 115  * @source: source parsed from a disassembler like objdump -dS
 116  * @cyc_hist: Average cycles per basic block
 117  *
 118  * lines is allocated, percentages calculated and all sorted by percentage
 119  * when the annotation is about to be presented, so the percentages are for
 120  * one of the entries in the histogram array, i.e. for the event/counter being
 121  * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 122  * returns.
 123  */
 124 struct annotated_source {
 125         struct list_head   source;
 126         struct source_line *lines;
 127         int                nr_histograms;
 128         size_t             sizeof_sym_hist;
 129         struct cyc_hist    *cycles_hist;
 130         struct sym_hist    histograms[0];
 131 };
 132
 133 struct annotation {
 134         pthread_mutex_t         lock;
 135         u64                     max_coverage;
 136         struct annotated_source *src;
 137 };
 138
 139 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
 140 {
 141         return (((void *)&notes->src->histograms) +
 142                 (notes->src->sizeof_sym_hist * idx));
 143 }
 144
 145 static inline struct annotation *symbol__annotation(struct symbol *sym)
 146 {
 147         return (void *)sym - symbol_conf.priv_size;
 148 }
 149
 150 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx);
 151
 152 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 153                                     struct addr_map_symbol *start,
 154                                     unsigned cycles);
 155
 156 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 addr);
 157
 158 int symbol__alloc_hist(struct symbol *sym);
 159 void symbol__annotate_zero_histograms(struct symbol *sym);
 160
 161 int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize);
 162
 163 enum symbol_disassemble_errno {
 164         SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,
 165
 166         /*
 167          * Choose an arbitrary negative big number not to clash with standard
 168          * errno since SUS requires the errno has distinct positive values.
 169          * See 'Issue 6' in the link below.
 170          *
 171          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
 172          */
 173         __SYMBOL_ANNOTATE_ERRNO__START          = -10000,
 174
 175         SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,
 176
 177         __SYMBOL_ANNOTATE_ERRNO__END,
 178 };
 179
 180 int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
 181                                  int errnum, char *buf, size_t buflen);
 182
 183 int symbol__annotate_printf(struct symbol *sym, struct map *map,
 184                             struct perf_evsel *evsel, bool full_paths,
 185                             int min_pcnt, int max_lines, int context);
 186 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
 187 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
 188 void disasm__purge(struct list_head *head);
 189
 190 bool ui__has_annotation(void);
 191
 192 int symbol__tty_annotate(struct symbol *sym, struct map *map,
 193                          struct perf_evsel *evsel, bool print_lines,
 194                          bool full_paths, int min_pcnt, int max_lines);
 195
 196 #ifdef HAVE_SLANG_SUPPORT
 197 int symbol__tui_annotate(struct symbol *sym, struct map *map,
 198                          struct perf_evsel *evsel,
 199                          struct hist_browser_timer *hbt);
 200 #else
 201 static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
 202                                 struct map *map __maybe_unused,
 203                                 struct perf_evsel *evsel  __maybe_unused,
 204                                 struct hist_browser_timer *hbt
 205                                 __maybe_unused)
 206 {
 207         return 0;
 208 }
 209 #endif
 210
 211 extern const char       *disassembler_style;
 212
 213 #endif  /* __PERF_ANNOTATE_H */