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_event: associated syscall_enter trace event 19 * @exit_event: associated syscall_exit trace event 20 */ 21 struct syscall_metadata { 22 const char *name; 23 int nb_args; 24 const char **types; 25 const char **args; 26 27 struct ftrace_event_call *enter_event; 28 struct ftrace_event_call *exit_event; 29 }; 30 31 #ifdef CONFIG_FTRACE_SYSCALLS 32 extern unsigned long arch_syscall_addr(int nr); 33 extern int syscall_name_to_nr(const char *name); 34 35 extern int syscall_enter_format(struct ftrace_event_call *call, 36 struct trace_seq *s); 37 extern int syscall_exit_format(struct ftrace_event_call *call, 38 struct trace_seq *s); 39 extern int syscall_enter_define_fields(struct ftrace_event_call *call); 40 extern int syscall_exit_define_fields(struct ftrace_event_call *call); 41 extern int reg_event_syscall_enter(struct ftrace_event_call *call); 42 extern void unreg_event_syscall_enter(struct ftrace_event_call *call); 43 extern int reg_event_syscall_exit(struct ftrace_event_call *call); 44 extern void unreg_event_syscall_exit(struct ftrace_event_call *call); 45 extern int 46 ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s); 47 enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags); 48 enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags); 49 #endif 50 #ifdef CONFIG_EVENT_PROFILE 51 int reg_prof_syscall_enter(char *name); 52 void unreg_prof_syscall_enter(char *name); 53 int reg_prof_syscall_exit(char *name); 54 void unreg_prof_syscall_exit(char *name); 55 56 #endif 57 58 #endif /* _TRACE_SYSCALL_H */ 59