/* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM_VAR #ifdef CONFIG_PERF_EVENTS #include "stages/stage6_event_callback.h" #undef __perf_count#define __perf_count(c)	(__count = (c)) #undef __perf_task#define __perf_task(t)	(__task = (t)) #undef __DECLARE_EVENT_CLASS#define __DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \static notrace void							\do_perf_trace_##call(void *__data, proto)				\{									\	struct trace_event_call *event_call = __data;			\	struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\	struct trace_event_raw_##call *entry;				\	struct pt_regs *__regs;						\	u64 __count = 1;						\	struct task_struct *__task = NULL;				\	struct hlist_head *head;					\	int __entry_size;						\	int __data_size;						\	int rctx;							\									\	__data_size = trace_event_get_offsets_##call(&__data_offsets, args); \									\	head = this_cpu_ptr(event_call->perf_events);			\	if (!bpf_prog_array_valid(event_call) &&			\	    __builtin_constant_p(!__task) && !__task &&			\	    hlist_empty(head))						\		return;							\									\	__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\			     sizeof(u64));				\	__entry_size -= sizeof(u32);					\									\	entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx);	\	if (!entry)							\		return;							\									\	perf_fetch_caller_regs(__regs);					\									\	tstruct								\									\	{ assign; }							\									\	perf_trace_run_bpf_submit(entry, __entry_size, rctx,		\				  event_call, __count, __regs,		\				  head, __task);			\} /* * Define unused __count and __task variables to use @args to pass * arguments to do_perf_trace_##call. This is needed because the * macros __perf_count and __perf_task introduce the side-effect to * store copies into those local variables. */#undef DECLARE_EVENT_CLASS#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \		      PARAMS(assign), PARAMS(print))			\static notrace void							\perf_trace_##call(void *__data, proto)					\{									\	u64 __count __attribute__((unused));				\	struct task_struct *__task __attribute__((unused));		\									\	guard(preempt_notrace)();					\	do_perf_trace_##call(__data, args);				\} #undef DECLARE_EVENT_SYSCALL_CLASS#define DECLARE_EVENT_SYSCALL_CLASS(call, proto, args, tstruct, assign, print) \__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \		      PARAMS(assign), PARAMS(print))			\static notrace void							\perf_trace_##call(void *__data, proto)					\{									\	u64 __count __attribute__((unused));				\	struct task_struct *__task __attribute__((unused));		\									\	might_fault();							\	guard(preempt_notrace)();					\	do_perf_trace_##call(__data, args);				\} /* * This part is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the * perf probe will fail to compile unless it too is updated. */#undef DEFINE_EVENT#define DEFINE_EVENT(template, call, proto, args)			\static inline void perf_test_probe_##call(void)				\{									\	check_trace_callback_type_##call(perf_trace_##template);	\}  #undef DEFINE_EVENT_PRINT#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __DECLARE_EVENT_CLASS #endif /* CONFIG_PERF_EVENTS */