kernel/tools/perf/util/header.h

   1 #ifndef __PERF_HEADER_H
   2 #define __PERF_HEADER_H
   3
   4 #include <linux/perf_event.h>
   5 #include <sys/types.h>
   6 #include <stdbool.h>
   7 #include <linux/bitmap.h>
   8 #include <linux/types.h>
   9 #include "event.h"
  10
  11
  12 enum {
  13         HEADER_RESERVED         = 0,    /* always cleared */
  14         HEADER_FIRST_FEATURE    = 1,
  15         HEADER_TRACING_DATA     = 1,
  16         HEADER_BUILD_ID,
  17
  18         HEADER_HOSTNAME,
  19         HEADER_OSRELEASE,
  20         HEADER_VERSION,
  21         HEADER_ARCH,
  22         HEADER_NRCPUS,
  23         HEADER_CPUDESC,
  24         HEADER_CPUID,
  25         HEADER_TOTAL_MEM,
  26         HEADER_CMDLINE,
  27         HEADER_EVENT_DESC,
  28         HEADER_CPU_TOPOLOGY,
  29         HEADER_NUMA_TOPOLOGY,
  30         HEADER_BRANCH_STACK,
  31         HEADER_PMU_MAPPINGS,
  32         HEADER_GROUP_DESC,
  33         HEADER_LAST_FEATURE,
  34         HEADER_FEAT_BITS        = 256,
  35 };
  36
  37 enum perf_header_version {
  38         PERF_HEADER_VERSION_1,
  39         PERF_HEADER_VERSION_2,
  40 };
  41
  42 struct perf_file_section {
  43         u64 offset;
  44         u64 size;
  45 };
  46
  47 struct perf_file_header {
  48         u64                             magic;
  49         u64                             size;
  50         u64                             attr_size;
  51         struct perf_file_section        attrs;
  52         struct perf_file_section        data;
  53         /* event_types is ignored */
  54         struct perf_file_section        event_types;
  55         DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
  56 };
  57
  58 struct perf_pipe_file_header {
  59         u64                             magic;
  60         u64                             size;
  61 };
  62
  63 struct perf_header;
  64
  65 int perf_file_header__read(struct perf_file_header *header,
  66                            struct perf_header *ph, int fd);
  67
  68 struct perf_session_env {
  69         char                    *hostname;
  70         char                    *os_release;
  71         char                    *version;
  72         char                    *arch;
  73         int                     nr_cpus_online;
  74         int                     nr_cpus_avail;
  75         char                    *cpu_desc;
  76         char                    *cpuid;
  77         unsigned long long      total_mem;
  78
  79         int                     nr_cmdline;
  80         int                     nr_sibling_cores;
  81         int                     nr_sibling_threads;
  82         int                     nr_numa_nodes;
  83         int                     nr_pmu_mappings;
  84         int                     nr_groups;
  85         char                    *cmdline;
  86         char                    *sibling_cores;
  87         char                    *sibling_threads;
  88         char                    *numa_nodes;
  89         char                    *pmu_mappings;
  90 };
  91
  92 struct perf_header {
  93         enum perf_header_version        version;
  94         bool                            needs_swap;
  95         u64                             data_offset;
  96         u64                             data_size;
  97         u64                             feat_offset;
  98         DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
  99         struct perf_session_env         env;
 100 };
 101
 102 struct perf_evlist;
 103 struct perf_session;
 104
 105 int perf_session__read_header(struct perf_session *session);
 106 int perf_session__write_header(struct perf_session *session,
 107                                struct perf_evlist *evlist,
 108                                int fd, bool at_exit);
 109 int perf_header__write_pipe(int fd);
 110
 111 void perf_header__set_feat(struct perf_header *header, int feat);
 112 void perf_header__clear_feat(struct perf_header *header, int feat);
 113 bool perf_header__has_feat(const struct perf_header *header, int feat);
 114
 115 int perf_header__set_cmdline(int argc, const char **argv);
 116
 117 int perf_header__process_sections(struct perf_header *header, int fd,
 118                                   void *data,
 119                                   int (*process)(struct perf_file_section *section,
 120                                   struct perf_header *ph,
 121                                   int feat, int fd, void *data));
 122
 123 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 124
 125 int perf_event__synthesize_attr(struct perf_tool *tool,
 126                                 struct perf_event_attr *attr, u32 ids, u64 *id,
 127                                 perf_event__handler_t process);
 128 int perf_event__synthesize_attrs(struct perf_tool *tool,
 129                                  struct perf_session *session,
 130                                  perf_event__handler_t process);
 131 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
 132                              struct perf_evlist **pevlist);
 133
 134 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
 135                                         int fd, struct perf_evlist *evlist,
 136                                         perf_event__handler_t process);
 137 int perf_event__process_tracing_data(struct perf_tool *tool,
 138                                      union perf_event *event,
 139                                      struct perf_session *session);
 140
 141 int perf_event__synthesize_build_id(struct perf_tool *tool,
 142                                     struct dso *pos, u16 misc,
 143                                     perf_event__handler_t process,
 144                                     struct machine *machine);
 145 int perf_event__process_build_id(struct perf_tool *tool,
 146                                  union perf_event *event,
 147                                  struct perf_session *session);
 148 bool is_perf_magic(u64 magic);
 149
 150 #define NAME_ALIGN 64
 151
 152 int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
 153
 154 /*
 155  * arch specific callback
 156  */
 157 int get_cpuid(char *buffer, size_t sz);
 158
 159 #endif /* __PERF_HEADER_H */