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_addr 24 #define __perf_addr(a) (__addr = (a)) 25 26 #undef __perf_count 27 #define __perf_count(c) (__count = (c)) 28 29 #undef __perf_task 30 #define __perf_task(t) (__task = (t)) 31 32 #undef DECLARE_EVENT_CLASS 33 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 34 static notrace void \ 35 perf_trace_##call(void *__data, proto) \ 36 { \ 37 struct trace_event_call *event_call = __data; \ 38 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 39 struct trace_event_raw_##call *entry; \ 40 struct pt_regs *__regs; \ 41 u64 __addr = 0, __count = 1; \ 42 struct task_struct *__task = NULL; \ 43 struct hlist_head *head; \ 44 int __entry_size; \ 45 int __data_size; \ 46 int rctx; \ 47 \ 48 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 49 \ 50 head = this_cpu_ptr(event_call->perf_events); \ 51 if (__builtin_constant_p(!__task) && !__task && \ 52 hlist_empty(head)) \ 53 return; \ 54 \ 55 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ 56 sizeof(u64)); \ 57 __entry_size -= sizeof(u32); \ 58 \ 59 entry = perf_trace_buf_prepare(__entry_size, \ 60 event_call->event.type, &__regs, &rctx); \ 61 if (!entry) \ 62 return; \ 63 \ 64 perf_fetch_caller_regs(__regs); \ 65 \ 66 tstruct \ 67 \ 68 { assign; } \ 69 \ 70 perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ 71 __count, __regs, head, __task); \ 72 } 73 74 /* 75 * This part is compiled out, it is only here as a build time check 76 * to make sure that if the tracepoint handling changes, the 77 * perf probe will fail to compile unless it too is updated. 78 */ 79 #undef DEFINE_EVENT 80 #define DEFINE_EVENT(template, call, proto, args) \ 81 static inline void perf_test_probe_##call(void) \ 82 { \ 83 check_trace_callback_type_##call(perf_trace_##template); \ 84 } 85 86 87 #undef DEFINE_EVENT_PRINT 88 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ 89 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) 90 91 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 92 #endif /* CONFIG_PERF_EVENTS */ 93