| /* SPDX-License-Identifier: GPL-2.0 */ |
| |
| #undef TRACE_SYSTEM_VAR |
| |
| #ifdef CONFIG_PERF_EVENTS |
| |
| #undef __entry |
| #define __entry entry |
| |
| #undef __get_dynamic_array |
| #define __get_dynamic_array(field) \ |
| ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
| |
| #undef __get_dynamic_array_len |
| #define __get_dynamic_array_len(field) \ |
| ((__entry->__data_loc_##field >> 16) & 0xffff) |
| |
| #undef __get_str |
| #define __get_str(field) ((char *)__get_dynamic_array(field)) |
| |
| #undef __get_bitmask |
| #define __get_bitmask(field) (char *)__get_dynamic_array(field) |
| |
| #undef __perf_count |
| #define __perf_count(c) (__count = (c)) |
| |
| #undef __perf_task |
| #define __perf_task(t) (__task = (t)) |
| |
| #undef DECLARE_EVENT_CLASS |
| #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
| static notrace void \ |
| perf_trace_##call(void *__data, proto) \ |
| { \ |
| struct trace_event_call *event_call = __data; \ |
| struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ |
| struct trace_event_raw_##call *entry; \ |
| struct pt_regs *__regs; \ |
| u64 __count = 1; \ |
| struct task_struct *__task = NULL; \ |
| struct hlist_head *head; \ |
| int __entry_size; \ |
| int __data_size; \ |
| int rctx; \ |
| \ |
| __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ |
| \ |
| head = this_cpu_ptr(event_call->perf_events); \ |
| if (!bpf_prog_array_valid(event_call) && \ |
| __builtin_constant_p(!__task) && !__task && \ |
| hlist_empty(head)) \ |
| return; \ |
| \ |
| __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ |
| sizeof(u64)); \ |
| __entry_size -= sizeof(u32); \ |
| \ |
| entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ |
| if (!entry) \ |
| return; \ |
| \ |
| perf_fetch_caller_regs(__regs); \ |
| \ |
| tstruct \ |
| \ |
| { assign; } \ |
| \ |
| perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ |
| event_call, __count, __regs, \ |
| head, __task); \ |
| } |
| |
| /* |
| * This part is compiled out, it is only here as a build time check |
| * to make sure that if the tracepoint handling changes, the |
| * perf probe will fail to compile unless it too is updated. |
| */ |
| #undef DEFINE_EVENT |
| #define DEFINE_EVENT(template, call, proto, args) \ |
| static inline void perf_test_probe_##call(void) \ |
| { \ |
| check_trace_callback_type_##call(perf_trace_##template); \ |
| } |
| |
| |
| #undef DEFINE_EVENT_PRINT |
| #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| |
| #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| #endif /* CONFIG_PERF_EVENTS */ |