| 1 | #ifndef _TRACE_SYSCALL_H |
| 2 | #define _TRACE_SYSCALL_H |
| 3 | |
| 4 | #include <linux/tracepoint.h> |
| 5 | #include <linux/unistd.h> |
| 6 | #include <linux/trace_events.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 trace_event_call *enter_event; |
| 33 | struct trace_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 */ |