Revert "net: validate variable length ll headers"
[pandora-kernel.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 #ifdef CONFIG_FTRACE_SYSCALLS
36 extern unsigned long arch_syscall_addr(int nr);
37 extern int init_syscall_trace(struct ftrace_event_call *call);
38
39 extern int reg_event_syscall_enter(struct ftrace_event_call *call);
40 extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
41 extern int reg_event_syscall_exit(struct ftrace_event_call *call);
42 extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
43 extern int
44 ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
45 enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
46                                       struct trace_event *event);
47 enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
48                                      struct trace_event *event);
49 #endif
50
51 #ifdef CONFIG_PERF_EVENTS
52 int perf_sysenter_enable(struct ftrace_event_call *call);
53 void perf_sysenter_disable(struct ftrace_event_call *call);
54 int perf_sysexit_enable(struct ftrace_event_call *call);
55 void perf_sysexit_disable(struct ftrace_event_call *call);
56 #endif
57
58 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
59 static inline void syscall_tracepoint_update(struct task_struct *p)
60 {
61         if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
62                 set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
63         else
64                 clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
65 }
66 #else
67 static inline void syscall_tracepoint_update(struct task_struct *p)
68 {
69 }
70 #endif
71
72 #endif /* _TRACE_SYSCALL_H */