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Frederic Weisbecker47788c52009-04-08 20:40:59 +02001#ifndef _TRACE_SYSCALL_H
2#define _TRACE_SYSCALL_H
3
Jason Barona871bd32009-08-10 16:52:31 -04004#include <linux/tracepoint.h>
Jason Baronfb34a082009-08-10 16:52:47 -04005#include <linux/unistd.h>
6#include <linux/ftrace_event.h>
Oleg Nesterov4af42062014-04-13 20:58:54 +02007#include <linux/thread_info.h>
Jason Barona871bd32009-08-10 16:52:31 -04008
Frederic Weisbecker47788c52009-04-08 20:40:59 +02009#include <asm/ptrace.h>
10
Jason Barona871bd32009-08-10 16:52:31 -040011
Frederic Weisbecker47788c52009-04-08 20:40:59 +020012/*
13 * A syscall entry in the ftrace syscalls array.
14 *
15 * @name: name of the syscall
Lai Jiangshanc252f652009-12-01 16:23:47 +080016 * @syscall_nr: number of the syscall
Frederic Weisbecker47788c52009-04-08 20:40:59 +020017 * @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])
Tom Zanussi44a6a4e2013-06-29 00:08:05 -050020 * @enter_fields: list of fields for syscall_enter trace event
Li Zefan540b7b82009-08-19 15:54:51 +080021 * @enter_event: associated syscall_enter trace event
22 * @exit_event: associated syscall_exit trace event
Frederic Weisbecker47788c52009-04-08 20:40:59 +020023 */
24struct syscall_metadata {
25 const char *name;
Lai Jiangshanc252f652009-12-01 16:23:47 +080026 int syscall_nr;
Frederic Weisbecker47788c52009-04-08 20:40:59 +020027 int nb_args;
28 const char **types;
29 const char **args;
Steven Rostedt2e33af02010-04-22 10:35:55 -040030 struct list_head enter_fields;
Li Zefan540b7b82009-08-19 15:54:51 +080031
32 struct ftrace_event_call *enter_event;
33 struct ftrace_event_call *exit_event;
Frederic Weisbecker47788c52009-04-08 20:40:59 +020034};
35
Oleg Nesterov4af42062014-04-13 20:58:54 +020036#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
37static 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
45static inline void syscall_tracepoint_update(struct task_struct *p)
46{
47}
48#endif
49
Frederic Weisbecker47788c52009-04-08 20:40:59 +020050#endif /* _TRACE_SYSCALL_H */