summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/bpf_skel/lock_data.h
blob: 36af11faad03c19a9a198c99e0620d6d93f77de5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Data structures shared between BPF and tools. */
#ifndef UTIL_BPF_SKEL_LOCK_DATA_H
#define UTIL_BPF_SKEL_LOCK_DATA_H

struct tstamp_data {
	u64 timestamp;
	u64 lock;
	u32 flags;
	u32 stack_id;
};

struct contention_key {
	u32 stack_id;
	u32 pid;
	u64 lock_addr_or_cgroup;
};

#define TASK_COMM_LEN  16

struct contention_task_data {
	char comm[TASK_COMM_LEN];
};

/* default buffer size */
#define MAX_ENTRIES  16384

/*
 * Upper bits of the flags in the contention_data are used to identify
 * some well-known locks which do not have symbols (non-global locks).
 */
#define LCD_F_MMAP_LOCK		(1U << 31)
#define LCD_F_SIGHAND_LOCK	(1U << 30)

#define LCB_F_MAX_FLAGS		(1U << 7)

struct contention_data {
	u64 total_time;
	u64 min_time;
	u64 max_time;
	u32 count;
	u32 flags;
};

enum lock_aggr_mode {
	LOCK_AGGR_ADDR = 0,
	LOCK_AGGR_TASK,
	LOCK_AGGR_CALLER,
	LOCK_AGGR_CGROUP,
};

enum lock_class_sym {
	LOCK_CLASS_NONE,
	LOCK_CLASS_RQLOCK,
};

#endif /* UTIL_BPF_SKEL_LOCK_DATA_H */