1 #ifndef _TRACE_SYSCALL_H 2 #define _TRACE_SYSCALL_H 3 4 #include <linux/tracepoint.h> 5 #include <linux/unistd.h> 6 #include <linux/ftrace_event.h> 7 #include <linux/thread_info.h> 8 9 #include <asm/ptrace.h> 10 11 12 /* 13 * A syscall entry in the ftrace syscalls array. 14 * 15 * @name: name of the syscall 16 * @syscall_nr: number of the syscall 17 * @nb_args: number of parameters it takes 18 * @types: list of types as strings 19 * @args: list of args as strings (args[i] matches types[i]) 20 * @enter_fields: list of fields for syscall_enter trace event 21 * @enter_event: associated syscall_enter trace event 22 * @exit_event: associated syscall_exit trace event 23 */ 24 struct syscall_metadata { 25 const char *name; 26 int syscall_nr; 27 int nb_args; 28 const char **types; 29 const char **args; 30 struct list_head enter_fields; 31 32 struct ftrace_event_call *enter_event; 33 struct ftrace_event_call *exit_event; 34 }; 35 36 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) 37 static inline void syscall_tracepoint_update(struct task_struct *p) 38 { 39 if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) 40 set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT); 41 else 42 clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT); 43 } 44 #else 45 static inline void syscall_tracepoint_update(struct task_struct *p) 46 { 47 } 48 #endif 49 50 #endif /* _TRACE_SYSCALL_H */ 51