tools/perf/util/evsel.h

   1 #ifndef __PERF_EVSEL_H
   2 #define __PERF_EVSEL_H 1
   3
   4 #include <linux/list.h>
   5 #include <stdbool.h>
   6 #include <stddef.h>
   7 #include <linux/perf_event.h>
   8 #include "types.h"
   9 #include "xyarray.h"
  10 #include "cgroup.h"
  11 #include "hist.h"
  12 #include "symbol.h"
  13
  14 struct perf_counts_values {
  15         union {
  16                 struct {
  17                         u64 val;
  18                         u64 ena;
  19                         u64 run;
  20                 };
  21                 u64 values[3];
  22         };
  23 };
  24
  25 struct perf_counts {
  26         s8                        scaled;
  27         struct perf_counts_values aggr;
  28         struct perf_counts_values cpu[];
  29 };
  30
  31 struct perf_evsel;
  32
  33 /*
  34  * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
  35  * more than one entry in the evlist.
  36  */
  37 struct perf_sample_id {
  38         struct hlist_node       node;
  39         u64                     id;
  40         struct perf_evsel       *evsel;
  41
  42         /* Holds total ID period value for PERF_SAMPLE_READ processing. */
  43         u64                     period;
  44 };
  45
  46 /** struct perf_evsel - event selector
  47  *
  48  * @name - Can be set to retain the original event name passed by the user,
  49  *         so that when showing results in tools such as 'perf stat', we
  50  *         show the name used, not some alias.
  51  * @id_pos: the position of the event id (PERF_SAMPLE_ID or
  52  *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
  53  *          struct sample_event
  54  * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
  55  *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
  56  *          is used there is an id sample appended to non-sample events
  57  */
  58 struct perf_evsel {
  59         struct list_head        node;
  60         struct perf_event_attr  attr;
  61         char                    *filter;
  62         struct xyarray          *fd;
  63         struct xyarray          *sample_id;
  64         u64                     *id;
  65         struct perf_counts      *counts;
  66         struct perf_counts      *prev_raw_counts;
  67         int                     idx;
  68         u32                     ids;
  69         struct hists            hists;
  70         char                    *name;
  71         struct event_format     *tp_format;
  72         union {
  73                 void            *priv;
  74                 off_t           id_offset;
  75         };
  76         struct cgroup_sel       *cgrp;
  77         void                    *handler;
  78         struct cpu_map          *cpus;
  79         unsigned int            sample_size;
  80         int                     id_pos;
  81         int                     is_pos;
  82         bool                    supported;
  83         bool                    needs_swap;
  84         /* parse modifier helper */
  85         int                     exclude_GH;
  86         int                     nr_members;
  87         int                     sample_read;
  88         struct perf_evsel       *leader;
  89         char                    *group_name;
  90 };
  91
  92 #define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)
  93
  94 struct cpu_map;
  95 struct thread_map;
  96 struct perf_evlist;
  97 struct perf_record_opts;
  98
  99 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);
 100
 101 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
 102 {
 103         return perf_evsel__new_idx(attr, 0);
 104 }
 105
 106 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);
 107
 108 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name)
 109 {
 110         return perf_evsel__newtp_idx(sys, name, 0);
 111 }
 112
 113 struct event_format *event_format__new(const char *sys, const char *name);
 114
 115 void perf_evsel__init(struct perf_evsel *evsel,
 116                       struct perf_event_attr *attr, int idx);
 117 void perf_evsel__exit(struct perf_evsel *evsel);
 118 void perf_evsel__delete(struct perf_evsel *evsel);
 119
 120 void perf_evsel__config(struct perf_evsel *evsel,
 121                         struct perf_record_opts *opts);
 122
 123 int __perf_evsel__sample_size(u64 sample_type);
 124 void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
 125
 126 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
 127
 128 #define PERF_EVSEL__MAX_ALIASES 8
 129
 130 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
 131                                        [PERF_EVSEL__MAX_ALIASES];
 132 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
 133                                           [PERF_EVSEL__MAX_ALIASES];
 134 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
 135                                               [PERF_EVSEL__MAX_ALIASES];
 136 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
 137 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
 138 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
 139                                             char *bf, size_t size);
 140 const char *perf_evsel__name(struct perf_evsel *evsel);
 141 const char *perf_evsel__group_name(struct perf_evsel *evsel);
 142 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size);
 143
 144 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 145 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
 146 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
 147 void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus);
 148 void perf_evsel__free_fd(struct perf_evsel *evsel);
 149 void perf_evsel__free_id(struct perf_evsel *evsel);
 150 void perf_evsel__free_counts(struct perf_evsel *evsel);
 151 void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 152
 153 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
 154                                   enum perf_event_sample_format bit);
 155 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
 156                                     enum perf_event_sample_format bit);
 157
 158 #define perf_evsel__set_sample_bit(evsel, bit) \
 159         __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
 160
 161 #define perf_evsel__reset_sample_bit(evsel, bit) \
 162         __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
 163
 164 void perf_evsel__set_sample_id(struct perf_evsel *evsel,
 165                                bool use_sample_identifier);
 166
 167 int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
 168                            const char *filter);
 169 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);
 170
 171 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
 172                              struct cpu_map *cpus);
 173 int perf_evsel__open_per_thread(struct perf_evsel *evsel,
 174                                 struct thread_map *threads);
 175 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 176                      struct thread_map *threads);
 177 void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
 178
 179 struct perf_sample;
 180
 181 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
 182                          const char *name);
 183 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
 184                        const char *name);
 185
 186 static inline char *perf_evsel__strval(struct perf_evsel *evsel,
 187                                        struct perf_sample *sample,
 188                                        const char *name)
 189 {
 190         return perf_evsel__rawptr(evsel, sample, name);
 191 }
 192
 193 struct format_field;
 194
 195 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name);
 196
 197 #define perf_evsel__match(evsel, t, c)          \
 198         (evsel->attr.type == PERF_TYPE_##t &&   \
 199          evsel->attr.config == PERF_COUNT_##c)
 200
 201 static inline bool perf_evsel__match2(struct perf_evsel *e1,
 202                                       struct perf_evsel *e2)
 203 {
 204         return (e1->attr.type == e2->attr.type) &&
 205                (e1->attr.config == e2->attr.config);
 206 }
 207
 208 #define perf_evsel__cmp(a, b)                   \
 209         ((a) &&                                 \
 210          (b) &&                                 \
 211          (a)->attr.type == (b)->attr.type &&    \
 212          (a)->attr.config == (b)->attr.config)
 213
 214 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 215                               int cpu, int thread, bool scale);
 216
 217 /**
 218  * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
 219  *
 220  * @evsel - event selector to read value
 221  * @cpu - CPU of interest
 222  * @thread - thread of interest
 223  */
 224 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 225                                           int cpu, int thread)
 226 {
 227         return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
 228 }
 229
 230 /**
 231  * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 232  *
 233  * @evsel - event selector to read value
 234  * @cpu - CPU of interest
 235  * @thread - thread of interest
 236  */
 237 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
 238                                                  int cpu, int thread)
 239 {
 240         return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
 241 }
 242
 243 int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
 244                        bool scale);
 245
 246 /**
 247  * perf_evsel__read - Read the aggregate results on all CPUs
 248  *
 249  * @evsel - event selector to read value
 250  * @ncpus - Number of cpus affected, from zero
 251  * @nthreads - Number of threads affected, from zero
 252  */
 253 static inline int perf_evsel__read(struct perf_evsel *evsel,
 254                                     int ncpus, int nthreads)
 255 {
 256         return __perf_evsel__read(evsel, ncpus, nthreads, false);
 257 }
 258
 259 /**
 260  * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
 261  *
 262  * @evsel - event selector to read value
 263  * @ncpus - Number of cpus affected, from zero
 264  * @nthreads - Number of threads affected, from zero
 265  */
 266 static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
 267                                           int ncpus, int nthreads)
 268 {
 269         return __perf_evsel__read(evsel, ncpus, nthreads, true);
 270 }
 271
 272 void hists__init(struct hists *hists);
 273
 274 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 275                              struct perf_sample *sample);
 276
 277 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
 278 {
 279         return list_entry(evsel->node.next, struct perf_evsel, node);
 280 }
 281
 282 /**
 283  * perf_evsel__is_group_leader - Return whether given evsel is a leader event
 284  *
 285  * @evsel - evsel selector to be tested
 286  *
 287  * Return %true if @evsel is a group leader or a stand-alone event
 288  */
 289 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
 290 {
 291         return evsel->leader == evsel;
 292 }
 293
 294 /**
 295  * perf_evsel__is_group_event - Return whether given evsel is a group event
 296  *
 297  * @evsel - evsel selector to be tested
 298  *
 299  * Return %true iff event group view is enabled and @evsel is a actual group
 300  * leader which has other members in the group
 301  */
 302 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
 303 {
 304         if (!symbol_conf.event_group)
 305                 return false;
 306
 307         return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
 308 }
 309
 310 struct perf_attr_details {
 311         bool freq;
 312         bool verbose;
 313         bool event_group;
 314 };
 315
 316 int perf_evsel__fprintf(struct perf_evsel *evsel,
 317                         struct perf_attr_details *details, FILE *fp);
 318
 319 bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
 320                           char *msg, size_t msgsize);
 321 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
 322                               int err, char *msg, size_t size);
 323
 324 static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
 325 {
 326         return evsel->idx - evsel->leader->idx;
 327 }
 328
 329 #define for_each_group_member(_evsel, _leader)                                  \
 330 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node);      \
 331      (_evsel) && (_evsel)->leader == (_leader);                                 \
 332      (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
 333
 334 #endif /* __PERF_EVSEL_H */