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 * @syscall_nr: number of the syscall 16 * @nb_args: number of parameters it takes 17 * @types: list of types as strings 18 * @args: list of args as strings (args[i] matches types[i]) 19 * @enter_event: associated syscall_enter trace event 20 * @exit_event: associated syscall_exit trace event 21 */ 22 struct syscall_metadata { 23 const char *name; 24 int syscall_nr; 25 int nb_args; 26 const char **types; 27 const char **args; 28 29 struct ftrace_event_call *enter_event; 30 struct ftrace_event_call *exit_event; 31 }; 32 33 #ifdef CONFIG_FTRACE_SYSCALLS 34 extern unsigned long arch_syscall_addr(int nr); 35 extern int init_syscall_trace(struct ftrace_event_call *call); 36 37 extern int syscall_enter_format(struct ftrace_event_call *call, 38 struct trace_seq *s); 39 extern int syscall_exit_format(struct ftrace_event_call *call, 40 struct trace_seq *s); 41 extern int syscall_enter_define_fields(struct ftrace_event_call *call); 42 extern int syscall_exit_define_fields(struct ftrace_event_call *call); 43 extern int reg_event_syscall_enter(struct ftrace_event_call *call); 44 extern void unreg_event_syscall_enter(struct ftrace_event_call *call); 45 extern int reg_event_syscall_exit(struct ftrace_event_call *call); 46 extern void unreg_event_syscall_exit(struct ftrace_event_call *call); 47 extern int 48 ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s); 49 enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags); 50 enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags); 51 #endif 52 #ifdef CONFIG_EVENT_PROFILE 53 int prof_sysenter_enable(struct ftrace_event_call *call); 54 void prof_sysenter_disable(struct ftrace_event_call *call); 55 int prof_sysexit_enable(struct ftrace_event_call *call); 56 void prof_sysexit_disable(struct ftrace_event_call *call); 57 58 #endif 59 60 #endif /* _TRACE_SYSCALL_H */ 61