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
6struct tstamp_data {
7 u64 timestamp;
8 u64 lock;
9 u32 flags;
10 u32 stack_id;
11};
12
13struct contention_key {
14 u32 stack_id;
15 u32 pid;
16 u64 lock_addr_or_cgroup;
17};
18
19#define TASK_COMM_LEN 16
20
21struct 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
37struct contention_data {
38 u64 total_time;
39 u64 min_time;
40 u64 max_time;
41 u32 count;
42 u32 flags;
43};
44
45enum lock_aggr_mode {
46 LOCK_AGGR_ADDR = 0,
47 LOCK_AGGR_TASK,
48 LOCK_AGGR_CALLER,
49 LOCK_AGGR_CGROUP,
50};
51
52enum lock_class_sym {
53 LOCK_CLASS_NONE,
54 LOCK_CLASS_RQLOCK,
55};
56
57#endif /* UTIL_BPF_SKEL_LOCK_DATA_H */
58

source code of linux/tools/perf/util/bpf_skel/lock_data.h