Merge tag 'fbdev-v5.2' of git://github.com/bzolnier/linux
[sfrench/cifs-2.6.git] / include / trace / syscall.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _TRACE_SYSCALL_H
3 #define _TRACE_SYSCALL_H
4
5 #include <linux/tracepoint.h>
6 #include <linux/unistd.h>
7 #include <linux/trace_events.h>
8 #include <linux/thread_info.h>
9
10 #include <asm/ptrace.h>
11
12
13 /*
14  * A syscall entry in the ftrace syscalls array.
15  *
16  * @name: name of the syscall
17  * @syscall_nr: number of the syscall
18  * @nb_args: number of parameters it takes
19  * @types: list of types as strings
20  * @args: list of args as strings (args[i] matches types[i])
21  * @enter_fields: list of fields for syscall_enter trace event
22  * @enter_event: associated syscall_enter trace event
23  * @exit_event: associated syscall_exit trace event
24  */
25 struct syscall_metadata {
26         const char      *name;
27         int             syscall_nr;
28         int             nb_args;
29         const char      **types;
30         const char      **args;
31         struct list_head enter_fields;
32
33         struct trace_event_call *enter_event;
34         struct trace_event_call *exit_event;
35 };
36
37 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
38 static inline void syscall_tracepoint_update(struct task_struct *p)
39 {
40         if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
41                 set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
42         else
43                 clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
44 }
45 #else
46 static inline void syscall_tracepoint_update(struct task_struct *p)
47 {
48 }
49 #endif
50
51 #endif /* _TRACE_SYSCALL_H */