#ifndef _TRACE_SYSCALL_H#define _TRACE_SYSCALL_H #include <asm/ptrace.h> /* * A syscall entry in the ftrace syscalls array. * * @name: name 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]) */struct syscall_metadata {	const char	*name;	int		nb_args;	const char	**types;	const char	**args;}; #ifdef CONFIG_FTRACE_SYSCALLSextern void arch_init_ftrace_syscalls(void);extern struct syscall_metadata *syscall_nr_to_meta(int nr);extern void start_ftrace_syscalls(void);extern void stop_ftrace_syscalls(void);extern void ftrace_syscall_enter(struct pt_regs *regs);extern void ftrace_syscall_exit(struct pt_regs *regs);#elsestatic inline void start_ftrace_syscalls(void)			{ }static inline void stop_ftrace_syscalls(void)			{ }static inline void ftrace_syscall_enter(struct pt_regs *regs)	{ }static inline void ftrace_syscall_exit(struct pt_regs *regs)	{ }#endif #endif /* _TRACE_SYSCALL_H */