1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Data structures shared between BPF and tools. */
3 #ifndef UTIL_BPF_SKEL_LOCK_DATA_H
4 #define UTIL_BPF_SKEL_LOCK_DATA_H
5
6 struct tstamp_data {
7 u64 timestamp;
8 u64 lock;
9 u32 flags;
10 s32 stack_id;
11 };
12
13 struct contention_key {
14 s32 stack_id;
15 u32 pid;
16 u64 lock_addr_or_cgroup;
17 };
18
19 #define TASK_COMM_LEN 16
20
21 struct contention_task_data {
22 char comm[TASK_COMM_LEN];
23 };
24
25 /* default buffer size */
26 #define MAX_ENTRIES 16384
27
28 /*
29 * Upper bits of the flags in the contention_data are used to identify
30 * some well-known locks which do not have symbols (non-global locks).
31 */
32 #define LCD_F_MMAP_LOCK (1U << 31)
33 #define LCD_F_SIGHAND_LOCK (1U << 30)
34
35 #define LCB_F_MAX_FLAGS (1U << 7)
36
37 struct contention_data {
38 u64 total_time;
39 u64 min_time;
40 u64 max_time;
41 u32 count;
42 u32 flags;
43 };
44
45 enum lock_aggr_mode {
46 LOCK_AGGR_ADDR = 0,
47 LOCK_AGGR_TASK,
48 LOCK_AGGR_CALLER,
49 LOCK_AGGR_CGROUP,
50 };
51
52 enum lock_class_sym {
53 LOCK_CLASS_NONE,
54 LOCK_CLASS_RQLOCK,
55 };
56
57 #endif /* UTIL_BPF_SKEL_LOCK_DATA_H */
58
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