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 __get_cpumask
 25#define __get_cpumask(field) (char *)__get_dynamic_array(field)
 26
 27#undef __get_sockaddr
 28#define __get_sockaddr(field) ((struct sockaddr *)__get_dynamic_array(field))
 29
 30#undef __get_rel_dynamic_array
 31#define __get_rel_dynamic_array(field)	\
 32		((void *)__entry +					\
 33		 offsetof(typeof(*__entry), __rel_loc_##field) +	\
 34		 sizeof(__entry->__rel_loc_##field) +			\
 35		 (__entry->__rel_loc_##field & 0xffff))
 36
 37#undef __get_rel_dynamic_array_len
 38#define __get_rel_dynamic_array_len(field)	\
 39		((__entry->__rel_loc_##field >> 16) & 0xffff)
 40
 41#undef __get_rel_str
 42#define __get_rel_str(field) ((char *)__get_rel_dynamic_array(field))
 43
 44#undef __get_rel_bitmask
 45#define __get_rel_bitmask(field) (char *)__get_rel_dynamic_array(field)
 46
 47#undef __get_rel_cpumask
 48#define __get_rel_cpumask(field) (char *)__get_rel_dynamic_array(field)
 49
 50#undef __get_rel_sockaddr
 51#define __get_rel_sockaddr(field) ((struct sockaddr *)__get_rel_dynamic_array(field))
 52
 53#undef __perf_count
 54#define __perf_count(c)	(__count = (c))
 55
 56#undef __perf_task
 57#define __perf_task(t)	(__task = (t))
 58
 59#undef DECLARE_EVENT_CLASS
 60#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
 61static notrace void							\
 62perf_trace_##call(void *__data, proto)					\
 63{									\
 64	struct trace_event_call *event_call = __data;			\
 65	struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
 66	struct trace_event_raw_##call *entry;				\
 67	struct pt_regs *__regs;						\
 68	u64 __count = 1;						\
 69	struct task_struct *__task = NULL;				\
 70	struct hlist_head *head;					\
 71	int __entry_size;						\
 72	int __data_size;						\
 73	int rctx;							\
 74									\
 75	__data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
 76									\
 77	head = this_cpu_ptr(event_call->perf_events);			\
 78	if (!bpf_prog_array_valid(event_call) &&			\
 79	    __builtin_constant_p(!__task) && !__task &&			\
 80	    hlist_empty(head))						\
 81		return;							\
 82									\
 83	__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
 84			     sizeof(u64));				\
 85	__entry_size -= sizeof(u32);					\
 86									\
 87	entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx);	\
 88	if (!entry)							\
 89		return;							\
 90									\
 91	perf_fetch_caller_regs(__regs);					\
 92									\
 93	tstruct								\
 94									\
 95	{ assign; }							\
 96									\
 97	perf_trace_run_bpf_submit(entry, __entry_size, rctx,		\
 98				  event_call, __count, __regs,		\
 99				  head, __task);			\
100}
101
102/*
103 * This part is compiled out, it is only here as a build time check
104 * to make sure that if the tracepoint handling changes, the
105 * perf probe will fail to compile unless it too is updated.
106 */
107#undef DEFINE_EVENT
108#define DEFINE_EVENT(template, call, proto, args)			\
109static inline void perf_test_probe_##call(void)				\
110{									\
111	check_trace_callback_type_##call(perf_trace_##template);	\
112}
113
114
115#undef DEFINE_EVENT_PRINT
116#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
117	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
118
119#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
120#endif /* CONFIG_PERF_EVENTS */