1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 /* Stage 5 definitions for creating trace events */ 4 5 /* 6 * remember the offset of each array from the beginning of the event. 7 */ 8 9 #undef __entry 10 #define __entry entry 11 12 #undef __field 13 #define __field(type, item) 14 15 #undef __field_ext 16 #define __field_ext(type, item, filter_type) 17 18 #undef __field_struct 19 #define __field_struct(type, item) 20 21 #undef __field_struct_ext 22 #define __field_struct_ext(type, item, filter_type) 23 24 #undef __array 25 #define __array(type, item, len) 26 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; 34 35 #undef __string 36 #define __string(item, src) __dynamic_array(char, item, \ 37 strlen((src) ? (const char *)(src) : "(null)") + 1) 38 39 #undef __string_len 40 #define __string_len(item, src, len) __dynamic_array(char, item, (len) + 1) 41 42 #undef __rel_dynamic_array 43 #define __rel_dynamic_array(type, item, len) \ 44 __item_length = (len) * sizeof(type); \ 45 __data_offsets->item = __data_size + \ 46 offsetof(typeof(*entry), __data) - \ 47 offsetof(typeof(*entry), __rel_loc_##item) - \ 48 sizeof(u32); \ 49 __data_offsets->item |= __item_length << 16; \ 50 __data_size += __item_length; 51 52 #undef __rel_string 53 #define __rel_string(item, src) __rel_dynamic_array(char, item, \ 54 strlen((src) ? (const char *)(src) : "(null)") + 1) 55 56 #undef __rel_string_len 57 #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, (len) + 1) 58 /* 59 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold 60 * num_possible_cpus(). 61 */ 62 #define __bitmask_size_in_bytes_raw(nr_bits) \ 63 (((nr_bits) + 7) / 8) 64 65 #define __bitmask_size_in_longs(nr_bits) \ 66 ((__bitmask_size_in_bytes_raw(nr_bits) + \ 67 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) 68 69 /* 70 * __bitmask_size_in_bytes is the number of bytes needed to hold 71 * num_possible_cpus() padded out to the nearest long. This is what 72 * is saved in the buffer, just to be consistent. 73 */ 74 #define __bitmask_size_in_bytes(nr_bits) \ 75 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) 76 77 #undef __bitmask 78 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ 79 __bitmask_size_in_longs(nr_bits)) 80 81 #undef __rel_bitmask 82 #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, \ 83 __bitmask_size_in_longs(nr_bits)) 84 85 #undef __sockaddr 86 #define __sockaddr(field, len) __dynamic_array(u8, field, len) 87 88 #undef __rel_sockaddr 89 #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) 90