1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun #undef TRACE_SYSTEM_VAR 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #ifdef CONFIG_PERF_EVENTS 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #undef __entry 8*4882a593Smuzhiyun #define __entry entry 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #undef __get_dynamic_array 11*4882a593Smuzhiyun #define __get_dynamic_array(field) \ 12*4882a593Smuzhiyun ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #undef __get_dynamic_array_len 15*4882a593Smuzhiyun #define __get_dynamic_array_len(field) \ 16*4882a593Smuzhiyun ((__entry->__data_loc_##field >> 16) & 0xffff) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #undef __get_str 19*4882a593Smuzhiyun #define __get_str(field) ((char *)__get_dynamic_array(field)) 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #undef __get_bitmask 22*4882a593Smuzhiyun #define __get_bitmask(field) (char *)__get_dynamic_array(field) 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #undef __perf_count 25*4882a593Smuzhiyun #define __perf_count(c) (__count = (c)) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #undef __perf_task 28*4882a593Smuzhiyun #define __perf_task(t) (__task = (t)) 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #undef DECLARE_EVENT_CLASS 31*4882a593Smuzhiyun #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 32*4882a593Smuzhiyun static notrace void \ 33*4882a593Smuzhiyun perf_trace_##call(void *__data, proto) \ 34*4882a593Smuzhiyun { \ 35*4882a593Smuzhiyun struct trace_event_call *event_call = __data; \ 36*4882a593Smuzhiyun struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 37*4882a593Smuzhiyun struct trace_event_raw_##call *entry; \ 38*4882a593Smuzhiyun struct pt_regs *__regs; \ 39*4882a593Smuzhiyun u64 __count = 1; \ 40*4882a593Smuzhiyun struct task_struct *__task = NULL; \ 41*4882a593Smuzhiyun struct hlist_head *head; \ 42*4882a593Smuzhiyun int __entry_size; \ 43*4882a593Smuzhiyun int __data_size; \ 44*4882a593Smuzhiyun int rctx; \ 45*4882a593Smuzhiyun \ 46*4882a593Smuzhiyun __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 47*4882a593Smuzhiyun \ 48*4882a593Smuzhiyun head = this_cpu_ptr(event_call->perf_events); \ 49*4882a593Smuzhiyun if (!bpf_prog_array_valid(event_call) && \ 50*4882a593Smuzhiyun __builtin_constant_p(!__task) && !__task && \ 51*4882a593Smuzhiyun hlist_empty(head)) \ 52*4882a593Smuzhiyun return; \ 53*4882a593Smuzhiyun \ 54*4882a593Smuzhiyun __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ 55*4882a593Smuzhiyun sizeof(u64)); \ 56*4882a593Smuzhiyun __entry_size -= sizeof(u32); \ 57*4882a593Smuzhiyun \ 58*4882a593Smuzhiyun entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ 59*4882a593Smuzhiyun if (!entry) \ 60*4882a593Smuzhiyun return; \ 61*4882a593Smuzhiyun \ 62*4882a593Smuzhiyun perf_fetch_caller_regs(__regs); \ 63*4882a593Smuzhiyun \ 64*4882a593Smuzhiyun tstruct \ 65*4882a593Smuzhiyun \ 66*4882a593Smuzhiyun { assign; } \ 67*4882a593Smuzhiyun \ 68*4882a593Smuzhiyun perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ 69*4882a593Smuzhiyun event_call, __count, __regs, \ 70*4882a593Smuzhiyun head, __task); \ 71*4882a593Smuzhiyun } 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun /* 74*4882a593Smuzhiyun * This part is compiled out, it is only here as a build time check 75*4882a593Smuzhiyun * to make sure that if the tracepoint handling changes, the 76*4882a593Smuzhiyun * perf probe will fail to compile unless it too is updated. 77*4882a593Smuzhiyun */ 78*4882a593Smuzhiyun #undef DEFINE_EVENT 79*4882a593Smuzhiyun #define DEFINE_EVENT(template, call, proto, args) \ 80*4882a593Smuzhiyun static inline void perf_test_probe_##call(void) \ 81*4882a593Smuzhiyun { \ 82*4882a593Smuzhiyun check_trace_callback_type_##call(perf_trace_##template); \ 83*4882a593Smuzhiyun } 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun #undef DEFINE_EVENT_PRINT 87*4882a593Smuzhiyun #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ 88*4882a593Smuzhiyun DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 91*4882a593Smuzhiyun #endif /* CONFIG_PERF_EVENTS */ 92