kernel/tools/perf/util/ordered-events.h

   1 #ifndef __ORDERED_EVENTS_H
   2 #define __ORDERED_EVENTS_H
   3
   4 #include <linux/types.h>
   5
   6 struct perf_sample;
   7
   8 struct ordered_event {
   9         u64                     timestamp;
  10         u64                     file_offset;
  11         union perf_event        *event;
  12         struct list_head        list;
  13 };
  14
  15 enum oe_flush {
  16         OE_FLUSH__NONE,
  17         OE_FLUSH__FINAL,
  18         OE_FLUSH__ROUND,
  19         OE_FLUSH__HALF,
  20 };
  21
  22 struct ordered_events;
  23
  24 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
  25                                          struct ordered_event *event);
  26
  27 struct ordered_events {
  28         u64                     last_flush;
  29         u64                     next_flush;
  30         u64                     max_timestamp;
  31         u64                     max_alloc_size;
  32         u64                     cur_alloc_size;
  33         struct list_head        events;
  34         struct list_head        cache;
  35         struct list_head        to_free;
  36         struct ordered_event    *buffer;
  37         struct ordered_event    *last;
  38         ordered_events__deliver_t deliver;
  39         int                     buffer_idx;
  40         unsigned int            nr_events;
  41         enum oe_flush           last_flush_type;
  42         u32                     nr_unordered_events;
  43         bool                    copy_on_queue;
  44 };
  45
  46 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
  47                           struct perf_sample *sample, u64 file_offset);
  48 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
  49 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
  50 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
  51 void ordered_events__free(struct ordered_events *oe);
  52
  53 static inline
  54 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
  55 {
  56         oe->max_alloc_size = size;
  57 }
  58
  59 static inline
  60 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
  61 {
  62         oe->copy_on_queue = copy;
  63 }
  64 #endif /* __ORDERED_EVENTS_H */