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 8 #include <asm/ptrace.h> 9 10 11 /* 12 * A syscall entry in the ftrace syscalls array. 13 * 14 * @name: name of the syscall 15 * @nb_args: number of parameters it takes 16 * @types: list of types as strings 17 * @args: list of args as strings (args[i] matches types[i]) 18 * @enter_id: associated ftrace enter event id 19 * @exit_id: associated ftrace exit event id 20 * @enter_event: associated syscall_enter trace event 21 * @exit_event: associated syscall_exit trace event 22 */ 23 struct syscall_metadata { 24 const char *name; 25 int nb_args; 26 const char **types; 27 const char **args; 28 int enter_id; 29 int exit_id; 30 31 struct ftrace_event_call *enter_event; 32 struct ftrace_event_call *exit_event; 33 }; 34 35 #ifdef CONFIG_FTRACE_SYSCALLS 36 extern struct syscall_metadata *syscall_nr_to_meta(int nr); 37 extern int syscall_name_to_nr(char *name); 38 void set_syscall_enter_id(int num, int id); 39 void set_syscall_exit_id(int num, int id); 40 extern struct trace_event event_syscall_enter; 41 extern struct trace_event event_syscall_exit; 42 extern int reg_event_syscall_enter(void *ptr); 43 extern void unreg_event_syscall_enter(void *ptr); 44 extern int reg_event_syscall_exit(void *ptr); 45 extern void unreg_event_syscall_exit(void *ptr); 46 extern int syscall_enter_format(struct ftrace_event_call *call, 47 struct trace_seq *s); 48 extern int syscall_exit_format(struct ftrace_event_call *call, 49 struct trace_seq *s); 50 extern int syscall_enter_define_fields(struct ftrace_event_call *call); 51 extern int syscall_exit_define_fields(struct ftrace_event_call *call); 52 enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags); 53 enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags); 54 #endif 55 #ifdef CONFIG_EVENT_PROFILE 56 int reg_prof_syscall_enter(char *name); 57 void unreg_prof_syscall_enter(char *name); 58 int reg_prof_syscall_exit(char *name); 59 void unreg_prof_syscall_exit(char *name); 60 61 #endif 62 63 #endif /* _TRACE_SYSCALL_H */ 64