tools/perf/util/trace-event.h

   1 #ifndef __PERF_TRACE_EVENTS_H
   2 #define __PERF_TRACE_EVENTS_H
   3
   4 #include <stdbool.h>
   5 #include "parse-events.h"
   6
   7 #define __unused __attribute__((unused))
   8
   9
  10 #ifndef PAGE_MASK
  11 #define PAGE_MASK (page_size - 1)
  12 #endif
  13
  14 enum {
  15         RINGBUF_TYPE_PADDING            = 29,
  16         RINGBUF_TYPE_TIME_EXTEND        = 30,
  17         RINGBUF_TYPE_TIME_STAMP         = 31,
  18 };
  19
  20 #ifndef TS_SHIFT
  21 #define TS_SHIFT                27
  22 #endif
  23
  24 #define NSECS_PER_SEC           1000000000ULL
  25 #define NSECS_PER_USEC          1000ULL
  26
  27 enum format_flags {
  28         FIELD_IS_ARRAY          = 1,
  29         FIELD_IS_POINTER        = 2,
  30         FIELD_IS_SIGNED         = 4,
  31         FIELD_IS_STRING         = 8,
  32         FIELD_IS_DYNAMIC        = 16,
  33         FIELD_IS_FLAG           = 32,
  34         FIELD_IS_SYMBOLIC       = 64,
  35 };
  36
  37 struct format_field {
  38         struct format_field     *next;
  39         char                    *type;
  40         char                    *name;
  41         int                     offset;
  42         int                     size;
  43         unsigned long           flags;
  44 };
  45
  46 struct format {
  47         int                     nr_common;
  48         int                     nr_fields;
  49         struct format_field     *common_fields;
  50         struct format_field     *fields;
  51 };
  52
  53 struct print_arg_atom {
  54         char                    *atom;
  55 };
  56
  57 struct print_arg_string {
  58         char                    *string;
  59         int                     offset;
  60 };
  61
  62 struct print_arg_field {
  63         char                    *name;
  64         struct format_field     *field;
  65 };
  66
  67 struct print_flag_sym {
  68         struct print_flag_sym   *next;
  69         char                    *value;
  70         char                    *str;
  71 };
  72
  73 struct print_arg_typecast {
  74         char                    *type;
  75         struct print_arg        *item;
  76 };
  77
  78 struct print_arg_flags {
  79         struct print_arg        *field;
  80         char                    *delim;
  81         struct print_flag_sym   *flags;
  82 };
  83
  84 struct print_arg_symbol {
  85         struct print_arg        *field;
  86         struct print_flag_sym   *symbols;
  87 };
  88
  89 struct print_arg;
  90
  91 struct print_arg_op {
  92         char                    *op;
  93         int                     prio;
  94         struct print_arg        *left;
  95         struct print_arg        *right;
  96 };
  97
  98 struct print_arg_func {
  99         char                    *name;
 100         struct print_arg        *args;
 101 };
 102
 103 enum print_arg_type {
 104         PRINT_NULL,
 105         PRINT_ATOM,
 106         PRINT_FIELD,
 107         PRINT_FLAGS,
 108         PRINT_SYMBOL,
 109         PRINT_TYPE,
 110         PRINT_STRING,
 111         PRINT_OP,
 112 };
 113
 114 struct print_arg {
 115         struct print_arg                *next;
 116         enum print_arg_type             type;
 117         union {
 118                 struct print_arg_atom           atom;
 119                 struct print_arg_field          field;
 120                 struct print_arg_typecast       typecast;
 121                 struct print_arg_flags          flags;
 122                 struct print_arg_symbol         symbol;
 123                 struct print_arg_func           func;
 124                 struct print_arg_string         string;
 125                 struct print_arg_op             op;
 126         };
 127 };
 128
 129 struct print_fmt {
 130         char                    *format;
 131         struct print_arg        *args;
 132 };
 133
 134 struct event {
 135         struct event            *next;
 136         char                    *name;
 137         int                     id;
 138         int                     flags;
 139         struct format           format;
 140         struct print_fmt        print_fmt;
 141         char                    *system;
 142 };
 143
 144 enum {
 145         EVENT_FL_ISFTRACE       = 0x01,
 146         EVENT_FL_ISPRINT        = 0x02,
 147         EVENT_FL_ISBPRINT       = 0x04,
 148         EVENT_FL_ISFUNC         = 0x08,
 149         EVENT_FL_ISFUNCENT      = 0x10,
 150         EVENT_FL_ISFUNCRET      = 0x20,
 151
 152         EVENT_FL_FAILED         = 0x80000000
 153 };
 154
 155 struct record {
 156         unsigned long long ts;
 157         int size;
 158         void *data;
 159 };
 160
 161 struct record *trace_peek_data(int cpu);
 162 struct record *trace_read_data(int cpu);
 163
 164 void parse_set_info(int nr_cpus, int long_sz);
 165
 166 ssize_t trace_report(int fd, bool repipe);
 167
 168 void *malloc_or_die(unsigned int size);
 169
 170 void parse_cmdlines(char *file, int size);
 171 void parse_proc_kallsyms(char *file, unsigned int size);
 172 void parse_ftrace_printk(char *file, unsigned int size);
 173
 174 void print_funcs(void);
 175 void print_printk(void);
 176
 177 int parse_ftrace_file(char *buf, unsigned long size);
 178 int parse_event_file(char *buf, unsigned long size, char *sys);
 179 void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 180                   char *comm);
 181
 182 extern int file_bigendian;
 183 extern int host_bigendian;
 184
 185 int bigendian(void);
 186
 187 static inline unsigned short __data2host2(unsigned short data)
 188 {
 189         unsigned short swap;
 190
 191         if (host_bigendian == file_bigendian)
 192                 return data;
 193
 194         swap = ((data & 0xffULL) << 8) |
 195                 ((data & (0xffULL << 8)) >> 8);
 196
 197         return swap;
 198 }
 199
 200 static inline unsigned int __data2host4(unsigned int data)
 201 {
 202         unsigned int swap;
 203
 204         if (host_bigendian == file_bigendian)
 205                 return data;
 206
 207         swap = ((data & 0xffULL) << 24) |
 208                 ((data & (0xffULL << 8)) << 8) |
 209                 ((data & (0xffULL << 16)) >> 8) |
 210                 ((data & (0xffULL << 24)) >> 24);
 211
 212         return swap;
 213 }
 214
 215 static inline unsigned long long __data2host8(unsigned long long data)
 216 {
 217         unsigned long long swap;
 218
 219         if (host_bigendian == file_bigendian)
 220                 return data;
 221
 222         swap = ((data & 0xffULL) << 56) |
 223                 ((data & (0xffULL << 8)) << 40) |
 224                 ((data & (0xffULL << 16)) << 24) |
 225                 ((data & (0xffULL << 24)) << 8) |
 226                 ((data & (0xffULL << 32)) >> 8) |
 227                 ((data & (0xffULL << 40)) >> 24) |
 228                 ((data & (0xffULL << 48)) >> 40) |
 229                 ((data & (0xffULL << 56)) >> 56);
 230
 231         return swap;
 232 }
 233
 234 #define data2host2(ptr)         __data2host2(*(unsigned short *)ptr)
 235 #define data2host4(ptr)         __data2host4(*(unsigned int *)ptr)
 236 #define data2host8(ptr)         __data2host8(*(unsigned long long *)ptr)
 237
 238 extern int header_page_ts_offset;
 239 extern int header_page_ts_size;
 240 extern int header_page_size_offset;
 241 extern int header_page_size_size;
 242 extern int header_page_data_offset;
 243 extern int header_page_data_size;
 244
 245 extern bool latency_format;
 246
 247 int trace_parse_common_type(void *data);
 248 int trace_parse_common_pid(void *data);
 249 int parse_common_pc(void *data);
 250 int parse_common_flags(void *data);
 251 int parse_common_lock_depth(void *data);
 252 struct event *trace_find_event(int id);
 253 struct event *trace_find_next_event(struct event *event);
 254 unsigned long long read_size(void *ptr, int size);
 255 unsigned long long
 256 raw_field_value(struct event *event, const char *name, void *data);
 257 void *raw_field_ptr(struct event *event, const char *name, void *data);
 258 unsigned long long eval_flag(const char *flag);
 259
 260 int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events);
 261 ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs,
 262                                int nb_events);
 263
 264 /* taken from kernel/trace/trace.h */
 265 enum trace_flag_type {
 266         TRACE_FLAG_IRQS_OFF             = 0x01,
 267         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
 268         TRACE_FLAG_NEED_RESCHED         = 0x04,
 269         TRACE_FLAG_HARDIRQ              = 0x08,
 270         TRACE_FLAG_SOFTIRQ              = 0x10,
 271 };
 272
 273 struct scripting_ops {
 274         const char *name;
 275         int (*start_script) (const char *script, int argc, const char **argv);
 276         int (*stop_script) (void);
 277         void (*process_event) (int cpu, void *data, int size,
 278                                unsigned long long nsecs, char *comm);
 279         int (*generate_script) (const char *outfile);
 280 };
 281
 282 int script_spec_register(const char *spec, struct scripting_ops *ops);
 283
 284 void setup_perl_scripting(void);
 285 void setup_python_scripting(void);
 286
 287 struct scripting_context {
 288         void *event_data;
 289 };
 290
 291 int common_pc(struct scripting_context *context);
 292 int common_flags(struct scripting_context *context);
 293 int common_lock_depth(struct scripting_context *context);
 294
 295 #endif /* __PERF_TRACE_EVENTS_H */