1/* SPDX-License-Identifier: GPL-2.0 */
 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
19#define __get_str(field) ((char *)__get_dynamic_array(field))
20
21#undef __get_bitmask
22#define __get_bitmask(field) (char *)__get_dynamic_array(field)
23
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)	\
32static notrace void							\
33perf_trace_##call(void *__data, proto)					\
34{									\
35	struct trace_event_call *event_call = __data;			\
36	struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
37	struct trace_event_raw_##call *entry;				\
38	struct pt_regs *__regs;						\
39	u64 __count = 1;						\
40	struct task_struct *__task = NULL;				\
41	struct hlist_head *head;					\
42	int __entry_size;						\
43	int __data_size;						\
44	int rctx;							\
45									\
46	__data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
47									\
48	head = this_cpu_ptr(event_call->perf_events);			\
49	if (!bpf_prog_array_valid(event_call) &&			\
50	    __builtin_constant_p(!__task) && !__task &&			\
51	    hlist_empty(head))						\
52		return;							\
53									\
54	__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
55			     sizeof(u64));				\
56	__entry_size -= sizeof(u32);					\
57									\
58	entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx);	\
59	if (!entry)							\
60		return;							\
61									\
62	perf_fetch_caller_regs(__regs);					\
63									\
64	tstruct								\
65									\
66	{ assign; }							\
67									\
68	perf_trace_run_bpf_submit(entry, __entry_size, rctx,		\
69				  event_call, __count, __regs,		\
70				  head, __task);			\
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)			\
80static 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 */