| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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 */ |