1/* SPDX-License-Identifier: GPL-2.0 */
2
3#undef TRACE_SYSTEM_VAR
4
5#ifdef CONFIG_PERF_EVENTS
6
7#include "stages/stage6_event_callback.h"
8
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)	\
17static notrace void							\
18perf_trace_##call(void *__data, proto)					\
19{									\
20	struct trace_event_call *event_call = __data;			\
21	struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
22	struct trace_event_raw_##call *entry;				\
23	struct pt_regs *__regs;						\
24	u64 __count = 1;						\
25	struct task_struct *__task = NULL;				\
26	struct hlist_head *head;					\
27	int __entry_size;						\
28	int __data_size;						\
29	int rctx;							\
30									\
31	__data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
32									\
33	head = this_cpu_ptr(event_call->perf_events);			\
34	if (!bpf_prog_array_valid(event_call) &&			\
35	    __builtin_constant_p(!__task) && !__task &&			\
36	    hlist_empty(head))						\
37		return;							\
38									\
39	__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
40			     sizeof(u64));				\
41	__entry_size -= sizeof(u32);					\
42									\
43	entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx);	\
44	if (!entry)							\
45		return;							\
46									\
47	perf_fetch_caller_regs(__regs);					\
48									\
49	tstruct								\
50									\
51	{ assign; }							\
52									\
53	perf_trace_run_bpf_submit(entry, __entry_size, rctx,		\
54				  event_call, __count, __regs,		\
55				  head, __task);			\
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)			\
65static 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 */
77