projects / linux.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 | ||
| 92a22cea | 7 | #include "stages/stage6_event_callback.h" |
| d07c9ad6 | 8 | |
| ee53bbd1 SRRH |
9 | #undef __perf_count |
| 10 | #define __perf_count(c) (__count = (c)) | |
| 11 | ||
| 12 | #undef __perf_task | |
| 13 | #define __perf_task(t) (__task = (t)) | |
| 14 | ||
| 15 | #undef DECLARE_EVENT_CLASS | |
| 16 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
| 17 | static notrace void \ | |
| 18 | perf_trace_##call(void *__data, proto) \ | |
| 19 | { \ | |
| 2425bcb9 | 20 | struct trace_event_call *event_call = __data; \ |
| 62323a14 | 21 | struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ |
| a7237765 | 22 | struct trace_event_raw_##call *entry; \ |
| ee53bbd1 | 23 | struct pt_regs *__regs; \ |
| e93735be | 24 | u64 __count = 1; \ |
| ee53bbd1 SRRH |
25 | struct task_struct *__task = NULL; \ |
| 26 | struct hlist_head *head; \ | |
| 27 | int __entry_size; \ | |
| 28 | int __data_size; \ | |
| 29 | int rctx; \ | |
| 30 | \ | |
| d0ee8f4a | 31 | __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ |
| ee53bbd1 SRRH |
32 | \ |
| 33 | head = this_cpu_ptr(event_call->perf_events); \ | |
| e87c6bc3 YS |
34 | if (!bpf_prog_array_valid(event_call) && \ |
| 35 | __builtin_constant_p(!__task) && !__task && \ | |
| 36 | hlist_empty(head)) \ | |
| ee53bbd1 SRRH |
37 | return; \ |
| 38 | \ | |
| 39 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ | |
| 40 | sizeof(u64)); \ | |
| 41 | __entry_size -= sizeof(u32); \ | |
| 42 | \ | |
| 1e1dcd93 | 43 | entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ |
| ee53bbd1 SRRH |
44 | if (!entry) \ |
| 45 | return; \ | |
| 46 | \ | |
| 47 | perf_fetch_caller_regs(__regs); \ | |
| 48 | \ | |
| 49 | tstruct \ | |
| 50 | \ | |
| 51 | { assign; } \ | |
| 52 | \ | |
| 85b67bcb AS |
53 | perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ |
| 54 | event_call, __count, __regs, \ | |
| 55 | head, __task); \ | |
| ee53bbd1 SRRH |
56 | } |
| 57 | ||
| 58 | /* | |
| 59 | * This part is compiled out, it is only here as a build time check | |
| 60 | * to make sure that if the tracepoint handling changes, the | |
| 61 | * perf probe will fail to compile unless it too is updated. | |
| 62 | */ | |
| 63 | #undef DEFINE_EVENT | |
| 64 | #define DEFINE_EVENT(template, call, proto, args) \ | |
| 65 | static inline void perf_test_probe_##call(void) \ | |
| 66 | { \ | |
| 67 | check_trace_callback_type_##call(perf_trace_##template); \ | |
| 68 | } | |
| 69 | ||
| 70 | ||
| 71 | #undef DEFINE_EVENT_PRINT | |
| 72 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
| 73 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
| 74 | ||
| 75 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
| 76 | #endif /* CONFIG_PERF_EVENTS */ |