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