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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* SPDX-License-Identifier: GPL-2.0 */
/* Stage 5 definitions for creating trace events */
/*
* remember the offset of each array from the beginning of the event.
*/
#undef __entry
#define __entry entry
/*
* Fields should never declare an array: i.e. __field(int, arr[5])
* If they do, it will cause issues in parsing and possibly corrupt the
* events. To prevent that from happening, test the sizeof() a fictitious
* type called "struct _test_no_array_##item" which will fail if "item"
* contains array elements (like "arr[5]").
*
* If you hit this, use __array(int, arr, 5) instead.
*/
#undef __field
#define __field(type, item) \
{ (void)sizeof(struct _test_no_array_##item *); }
#undef __field_ext
#define __field_ext(type, item, filter_type) \
{ (void)sizeof(struct _test_no_array_##item *); }
#undef __field_struct
#define __field_struct(type, item) \
{ (void)sizeof(struct _test_no_array_##item *); }
#undef __field_struct_ext
#define __field_struct_ext(type, item, filter_type) \
{ (void)sizeof(struct _test_no_array_##item *); }
#undef __array
#define __array(type, item, len)
#undef __dynamic_array
#define __dynamic_array(type, item, len) \
__item_length = (len) * sizeof(type); \
__data_offsets->item = __data_size + \
offsetof(typeof(*entry), __data); \
__data_offsets->item |= __item_length << 16; \
__data_size += __item_length;
#undef __string
#define __string(item, src) __dynamic_array(char, item, \
strlen((src) ? (const char *)(src) : "(null)") + 1)
#undef __string_len
#define __string_len(item, src, len) __dynamic_array(char, item, (len) + 1)
#undef __vstring
#define __vstring(item, fmt, ap) __dynamic_array(char, item, \
__trace_event_vstr_len(fmt, ap))
#undef __rel_dynamic_array
#define __rel_dynamic_array(type, item, len) \
__item_length = (len) * sizeof(type); \
__data_offsets->item = __data_size + \
offsetof(typeof(*entry), __data) - \
offsetof(typeof(*entry), __rel_loc_##item) - \
sizeof(u32); \
__data_offsets->item |= __item_length << 16; \
__data_size += __item_length;
#undef __rel_string
#define __rel_string(item, src) __rel_dynamic_array(char, item, \
strlen((src) ? (const char *)(src) : "(null)") + 1)
#undef __rel_string_len
#define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, (len) + 1)
/*
* __bitmask_size_in_bytes_raw is the number of bytes needed to hold
* num_possible_cpus().
*/
#define __bitmask_size_in_bytes_raw(nr_bits) \
(((nr_bits) + 7) / 8)
#define __bitmask_size_in_longs(nr_bits) \
((__bitmask_size_in_bytes_raw(nr_bits) + \
((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
/*
* __bitmask_size_in_bytes is the number of bytes needed to hold
* num_possible_cpus() padded out to the nearest long. This is what
* is saved in the buffer, just to be consistent.
*/
#define __bitmask_size_in_bytes(nr_bits) \
(__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
#undef __bitmask
#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
__bitmask_size_in_longs(nr_bits))
#undef __cpumask
#define __cpumask(item) __bitmask(item, nr_cpumask_bits)
#undef __rel_bitmask
#define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, \
__bitmask_size_in_longs(nr_bits))
#undef __rel_cpumask
#define __rel_cpumask(item) __rel_bitmask(item, nr_cpumask_bits)
#undef __sockaddr
#define __sockaddr(field, len) __dynamic_array(u8, field, len)
#undef __rel_sockaddr
#define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len)
|