tools/perf/util/header.h

   1 #ifndef __PERF_HEADER_H
   2 #define __PERF_HEADER_H
   3
   4 #include "../../../include/linux/perf_event.h"
   5 #include <sys/types.h>
   6 #include <stdbool.h>
   7 #include "types.h"
   8 #include "event.h"
   9
  10 #include <linux/bitmap.h>
  11
  12 struct perf_header_attr {
  13         struct perf_event_attr attr;
  14         int ids, size;
  15         u64 *id;
  16         off_t id_offset;
  17 };
  18
  19 enum {
  20         HEADER_TRACE_INFO = 1,
  21         HEADER_BUILD_ID,
  22         HEADER_LAST_FEATURE,
  23 };
  24
  25 #define HEADER_FEAT_BITS                        256
  26
  27 struct perf_file_section {
  28         u64 offset;
  29         u64 size;
  30 };
  31
  32 struct perf_file_header {
  33         u64                             magic;
  34         u64                             size;
  35         u64                             attr_size;
  36         struct perf_file_section        attrs;
  37         struct perf_file_section        data;
  38         struct perf_file_section        event_types;
  39         DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
  40 };
  41
  42 struct perf_pipe_file_header {
  43         u64                             magic;
  44         u64                             size;
  45 };
  46
  47 struct perf_header;
  48
  49 int perf_file_header__read(struct perf_file_header *self,
  50                            struct perf_header *ph, int fd);
  51
  52 struct perf_header {
  53         int                     frozen;
  54         int                     attrs, size;
  55         bool                    needs_swap;
  56         struct perf_header_attr **attr;
  57         s64                     attr_offset;
  58         u64                     data_offset;
  59         u64                     data_size;
  60         u64                     event_offset;
  61         u64                     event_size;
  62         DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
  63 };
  64
  65 int perf_header__init(struct perf_header *self);
  66 void perf_header__exit(struct perf_header *self);
  67
  68 int perf_header__read(struct perf_session *session, int fd);
  69 int perf_header__write(struct perf_header *self, int fd, bool at_exit);
  70 int perf_header__write_pipe(int fd);
  71
  72 int perf_header__add_attr(struct perf_header *self,
  73                           struct perf_header_attr *attr);
  74
  75 int perf_header__push_event(u64 id, const char *name);
  76 char *perf_header__find_event(u64 id);
  77
  78 struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
  79 void perf_header_attr__delete(struct perf_header_attr *self);
  80
  81 int perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
  82
  83 u64 perf_header__sample_type(struct perf_header *header);
  84 struct perf_event_attr *
  85 perf_header__find_attr(u64 id, struct perf_header *header);
  86 void perf_header__set_feat(struct perf_header *self, int feat);
  87 bool perf_header__has_feat(const struct perf_header *self, int feat);
  88
  89 int perf_header__process_sections(struct perf_header *self, int fd,
  90                                   int (*process)(struct perf_file_section *self,
  91                                                  struct perf_header *ph,
  92                                                  int feat, int fd));
  93
  94 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
  95                           const char *name, bool is_kallsyms);
  96 int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
  97
  98 int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
  99                            event__handler_t process,
 100                            struct perf_session *session);
 101 int event__synthesize_attrs(struct perf_header *self,
 102                             event__handler_t process,
 103                             struct perf_session *session);
 104 int event__process_attr(event_t *self, struct perf_session *session);
 105
 106 #endif /* __PERF_HEADER_H */