#ifndef _TRACE_SYSCALL_H#define _TRACE_SYSCALL_H #include <linux/tracepoint.h>#include <linux/unistd.h>#include <linux/trace_events.h>#include <linux/thread_info.h> #include <asm/ptrace.h>  /* * A syscall entry in the ftrace syscalls array. * * @name: name of the syscall * @syscall_nr: number of the syscall * @nb_args: number of parameters it takes * @types: list of types as strings * @args: list of args as strings (args[i] matches types[i]) * @enter_fields: list of fields for syscall_enter trace event * @enter_event: associated syscall_enter trace event * @exit_event: associated syscall_exit trace event */struct syscall_metadata {	const char	*name;	int		syscall_nr;	int		nb_args;	const char	**types;	const char	**args;	struct list_head enter_fields; 	struct trace_event_call *enter_event;	struct trace_event_call *exit_event;}; #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)static inline void syscall_tracepoint_update(struct task_struct *p){	if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))		set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);	else		clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);}#elsestatic inline void syscall_tracepoint_update(struct task_struct *p){}#endif #endif /* _TRACE_SYSCALL_H */