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 OE_FLUSH__TOP, 22 }; 23 24 struct ordered_events; 25 26 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe, 27 struct ordered_event *event); 28 29 struct ordered_events_buffer { 30 struct list_head list; 31 struct ordered_event event[0]; 32 }; 33 34 struct ordered_events { 35 u64 last_flush; 36 u64 next_flush; 37 u64 max_timestamp; 38 u64 max_alloc_size; 39 u64 cur_alloc_size; 40 struct list_head events; 41 struct list_head cache; 42 struct list_head to_free; 43 struct ordered_events_buffer *buffer; 44 struct ordered_event *last; 45 ordered_events__deliver_t deliver; 46 int buffer_idx; 47 unsigned int nr_events; 48 enum oe_flush last_flush_type; 49 u32 nr_unordered_events; 50 bool copy_on_queue; 51 void *data; 52 }; 53 54 int ordered_events__queue(struct ordered_events *oe, union perf_event *event, 55 u64 timestamp, u64 file_offset); 56 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event); 57 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how); 58 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver, 59 void *data); 60 void ordered_events__free(struct ordered_events *oe); 61 void ordered_events__reinit(struct ordered_events *oe); 62 63 static inline 64 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size) 65 { 66 oe->max_alloc_size = size; 67 } 68 69 static inline 70 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy) 71 { 72 oe->copy_on_queue = copy; 73 } 74 #endif /* __ORDERED_EVENTS_H */ 75