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