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