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