1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* Stage 5 definitions for creating trace events */
6 * remember the offset of each array from the beginning of the event.
13 #define __field(type, item)
16 #define __field_ext(type, item, filter_type)
19 #define __field_struct(type, item)
21 #undef __field_struct_ext
22 #define __field_struct_ext(type, item, filter_type)
25 #define __array(type, item, len)
27 #undef __dynamic_array
28 #define __dynamic_array(type, item, len) \
29 __item_length = (len) * sizeof(type); \
30 __data_offsets->item = __data_size + \
31 offsetof(typeof(*entry), __data); \
32 __data_offsets->item |= __item_length << 16; \
33 __data_size += __item_length;
36 #define __string(item, src) __dynamic_array(char, item, \
37 strlen((src) ? (const char *)(src) : "(null)") + 1)
40 #define __string_len(item, src, len) __dynamic_array(char, item, (len) + 1)
43 #define __vstring(item, fmt, ap) __dynamic_array(char, item, \
44 __trace_event_vstr_len(fmt, ap))
46 #undef __rel_dynamic_array
47 #define __rel_dynamic_array(type, item, len) \
48 __item_length = (len) * sizeof(type); \
49 __data_offsets->item = __data_size + \
50 offsetof(typeof(*entry), __data) - \
51 offsetof(typeof(*entry), __rel_loc_##item) - \
53 __data_offsets->item |= __item_length << 16; \
54 __data_size += __item_length;
57 #define __rel_string(item, src) __rel_dynamic_array(char, item, \
58 strlen((src) ? (const char *)(src) : "(null)") + 1)
60 #undef __rel_string_len
61 #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, (len) + 1)
63 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
64 * num_possible_cpus().
66 #define __bitmask_size_in_bytes_raw(nr_bits) \
69 #define __bitmask_size_in_longs(nr_bits) \
70 ((__bitmask_size_in_bytes_raw(nr_bits) + \
71 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
74 * __bitmask_size_in_bytes is the number of bytes needed to hold
75 * num_possible_cpus() padded out to the nearest long. This is what
76 * is saved in the buffer, just to be consistent.
78 #define __bitmask_size_in_bytes(nr_bits) \
79 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
82 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
83 __bitmask_size_in_longs(nr_bits))
86 #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, \
87 __bitmask_size_in_longs(nr_bits))
90 #define __sockaddr(field, len) __dynamic_array(u8, field, len)
93 #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len)