projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| ee53bbd1 SRRH |
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 | |
| 934de5f2 | 19 | #define __get_str(field) ((char *)__get_dynamic_array(field)) |
| ee53bbd1 SRRH |
20 | |
| 21 | #undef __get_bitmask | |
| 22 | #define __get_bitmask(field) (char *)__get_dynamic_array(field) | |
| 23 | ||
| ee53bbd1 SRRH |
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 | { \ | |
| 2425bcb9 | 35 | struct trace_event_call *event_call = __data; \ |
| 62323a14 | 36 | struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ |
| a7237765 | 37 | struct trace_event_raw_##call *entry; \ |
| ee53bbd1 | 38 | struct pt_regs *__regs; \ |
| e93735be | 39 | u64 __count = 1; \ |
| ee53bbd1 SRRH |
40 | struct task_struct *__task = NULL; \ |
| 41 | struct hlist_head *head; \ | |
| 42 | int __entry_size; \ | |
| 43 | int __data_size; \ | |
| 44 | int rctx; \ | |
| 45 | \ | |
| d0ee8f4a | 46 | __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ |
| ee53bbd1 SRRH |
47 | \ |
| 48 | head = this_cpu_ptr(event_call->perf_events); \ | |
| e87c6bc3 YS |
49 | if (!bpf_prog_array_valid(event_call) && \ |
| 50 | __builtin_constant_p(!__task) && !__task && \ | |
| 51 | hlist_empty(head)) \ | |
| ee53bbd1 SRRH |
52 | return; \ |
| 53 | \ | |
| 54 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ | |
| 55 | sizeof(u64)); \ | |
| 56 | __entry_size -= sizeof(u32); \ | |
| 57 | \ | |
| 1e1dcd93 | 58 | entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ |
| ee53bbd1 SRRH |
59 | if (!entry) \ |
| 60 | return; \ | |
| 61 | \ | |
| 62 | perf_fetch_caller_regs(__regs); \ | |
| 63 | \ | |
| 64 | tstruct \ | |
| 65 | \ | |
| 66 | { assign; } \ | |
| 67 | \ | |
| 85b67bcb AS |
68 | perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ |
| 69 | event_call, __count, __regs, \ | |
| 70 | head, __task); \ | |
| ee53bbd1 SRRH |
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 */ |