Merge remote-tracking branch 'lsk/v3.10/topic/arm64-misc' into linux-linaro-lsk
[firefly-linux-kernel-4.4.55.git] / include / trace / syscall.h
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_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             syscall_nr;
26         int             nb_args;
27         const char      **types;
28         const char      **args;
29         struct list_head enter_fields;
30
31         struct ftrace_event_call *enter_event;
32         struct ftrace_event_call *exit_event;
33 };
34
35 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
36 static inline void syscall_tracepoint_update(struct task_struct *p)
37 {
38         if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
39                 set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
40         else
41                 clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
42 }
43 #else
44 static inline void syscall_tracepoint_update(struct task_struct *p)
45 {
46 }
47 #endif
48
49 #endif /* _TRACE_SYSCALL_H */