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_syscall_work(SYSCALL_TRACEPOINT)) |
41 | set_task_syscall_work(p, SYSCALL_TRACEPOINT); |
42 | else |
43 | clear_task_syscall_work(p, 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 */ |
52 | |