include/trace/syscall.h

   1 #ifndef _TRACE_SYSCALL_H
   2 #define _TRACE_SYSCALL_H
   3
   4 #include <asm/ptrace.h>
   5
   6 /*
   7  * A syscall entry in the ftrace syscalls array.
   8  *
   9  * @name: name of the syscall
  10  * @nb_args: number of parameters it takes
  11  * @types: list of types as strings
  12  * @args: list of args as strings (args[i] matches types[i])
  13  */
  14 struct syscall_metadata {
  15         const char      *name;
  16         int             nb_args;
  17         const char      **types;
  18         const char      **args;
  19 };
  20
  21 #ifdef CONFIG_FTRACE_SYSCALLS
  22 extern void arch_init_ftrace_syscalls(void);
  23 extern struct syscall_metadata *syscall_nr_to_meta(int nr);
  24 extern void start_ftrace_syscalls(void);
  25 extern void stop_ftrace_syscalls(void);
  26 extern void ftrace_syscall_enter(struct pt_regs *regs);
  27 extern void ftrace_syscall_exit(struct pt_regs *regs);
  28 #else
  29 static inline void start_ftrace_syscalls(void)                  { }
  30 static inline void stop_ftrace_syscalls(void)                   { }
  31 static inline void ftrace_syscall_enter(struct pt_regs *regs)   { }
  32 static inline void ftrace_syscall_exit(struct pt_regs *regs)    { }
  33 #endif
  34
  35 #endif /* _TRACE_SYSCALL_H */