1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #undef TRACE_SYSTEM_VAR 4 5 #ifdef CONFIG_PERF_EVENTS 6 7 #undef __entry 8 #define __entry entry 9 10 #undef __get_dynamic_array 11 #define __get_dynamic_array(field) \ 12 ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) 13 14 #undef __get_dynamic_array_len 15 #define __get_dynamic_array_len(field) \ 16 ((__entry->__data_loc_##field >> 16) & 0xffff) 17 18 #undef __get_str 19 #define __get_str(field) ((char *)__get_dynamic_array(field)) 20 21 #undef __get_bitmask 22 #define __get_bitmask(field) (char *)__get_dynamic_array(field) 23 24 #undef __get_rel_dynamic_array 25 #define __get_rel_dynamic_array(field) \ 26 ((void *)__entry + \ 27 offsetof(typeof(*__entry), __rel_loc_##field) + \ 28 sizeof(__entry->__rel_loc_##field) + \ 29 (__entry->__rel_loc_##field & 0xffff)) 30 31 #undef __get_rel_dynamic_array_len 32 #define __get_rel_dynamic_array_len(field) \ 33 ((__entry->__rel_loc_##field >> 16) & 0xffff) 34 35 #undef __get_rel_str 36 #define __get_rel_str(field) ((char *)__get_rel_dynamic_array(field)) 37 38 #undef __get_rel_bitmask 39 #define __get_rel_bitmask(field) (char *)__get_rel_dynamic_array(field) 40 41 #undef __perf_count 42 #define __perf_count(c) (__count = (c)) 43 44 #undef __perf_task 45 #define __perf_task(t) (__task = (t)) 46 47 #undef DECLARE_EVENT_CLASS 48 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 49 static notrace void \ 50 perf_trace_##call(void *__data, proto) \ 51 { \ 52 struct trace_event_call *event_call = __data; \ 53 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 54 struct trace_event_raw_##call *entry; \ 55 struct pt_regs *__regs; \ 56 u64 __count = 1; \ 57 struct task_struct *__task = NULL; \ 58 struct hlist_head *head; \ 59 int __entry_size; \ 60 int __data_size; \ 61 int rctx; \ 62 \ 63 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 64 \ 65 head = this_cpu_ptr(event_call->perf_events); \ 66 if (!bpf_prog_array_valid(event_call) && \ 67 __builtin_constant_p(!__task) && !__task && \ 68 hlist_empty(head)) \ 69 return; \ 70 \ 71 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ 72 sizeof(u64)); \ 73 __entry_size -= sizeof(u32); \ 74 \ 75 entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ 76 if (!entry) \ 77 return; \ 78 \ 79 perf_fetch_caller_regs(__regs); \ 80 \ 81 tstruct \ 82 \ 83 { assign; } \ 84 \ 85 perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ 86 event_call, __count, __regs, \ 87 head, __task); \ 88 } 89 90 /* 91 * This part is compiled out, it is only here as a build time check 92 * to make sure that if the tracepoint handling changes, the 93 * perf probe will fail to compile unless it too is updated. 94 */ 95 #undef DEFINE_EVENT 96 #define DEFINE_EVENT(template, call, proto, args) \ 97 static inline void perf_test_probe_##call(void) \ 98 { \ 99 check_trace_callback_type_##call(perf_trace_##template); \ 100 } 101 102 103 #undef DEFINE_EVENT_PRINT 104 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ 105 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) 106 107 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 108 #endif /* CONFIG_PERF_EVENTS */ 109