1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ORDERED_EVENTS_H 3 #define __ORDERED_EVENTS_H 4 5 #include <linux/types.h> 6 7 struct perf_sample; 8 9 struct ordered_event { 10 u64 timestamp; 11 u64 file_offset; 12 union perf_event *event; 13 struct list_head list; 14 }; 15 16 enum oe_flush { 17 OE_FLUSH__NONE, 18 OE_FLUSH__FINAL, 19 OE_FLUSH__ROUND, 20 OE_FLUSH__HALF, 21 }; 22 23 struct ordered_events; 24 25 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe, 26 struct ordered_event *event); 27 28 struct ordered_events { 29 u64 last_flush; 30 u64 next_flush; 31 u64 max_timestamp; 32 u64 max_alloc_size; 33 u64 cur_alloc_size; 34 struct list_head events; 35 struct list_head cache; 36 struct list_head to_free; 37 struct ordered_event *buffer; 38 struct ordered_event *last; 39 ordered_events__deliver_t deliver; 40 int buffer_idx; 41 unsigned int nr_events; 42 enum oe_flush last_flush_type; 43 u32 nr_unordered_events; 44 bool copy_on_queue; 45 }; 46 47 int ordered_events__queue(struct ordered_events *oe, union perf_event *event, 48 u64 timestamp, u64 file_offset); 49 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event); 50 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how); 51 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver); 52 void ordered_events__free(struct ordered_events *oe); 53 void ordered_events__reinit(struct ordered_events *oe); 54 55 static inline 56 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size) 57 { 58 oe->max_alloc_size = size; 59 } 60 61 static inline 62 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy) 63 { 64 oe->copy_on_queue = copy; 65 } 66 #endif /* __ORDERED_EVENTS_H */ 67