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
 8#include <asm/ptrace.h>
 9
10
11/*
12 * A syscall entry in the ftrace syscalls array.
13 *
14 * @name: name of the syscall
15 * @syscall_nr: number of the syscall
16 * @nb_args: number of parameters it takes
17 * @types: list of types as strings
18 * @args: list of args as strings (args[i] matches types[i])
 
19 * @enter_event: associated syscall_enter trace event
20 * @exit_event: associated syscall_exit trace event
21 */
22struct syscall_metadata {
23	const char	*name;
24	int		syscall_nr;
25	int		nb_args;
26	const char	**types;
27	const char	**args;
28	struct list_head enter_fields;
29
30	struct ftrace_event_call *enter_event;
31	struct ftrace_event_call *exit_event;
32};
33
34#ifdef CONFIG_FTRACE_SYSCALLS
35extern unsigned long arch_syscall_addr(int nr);
36extern int init_syscall_trace(struct ftrace_event_call *call);
37
38extern int reg_event_syscall_enter(struct ftrace_event_call *call);
39extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
40extern int reg_event_syscall_exit(struct ftrace_event_call *call);
41extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
42extern int
43ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
44enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
45				      struct trace_event *event);
46enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
47				     struct trace_event *event);
48#endif
49
50#ifdef CONFIG_PERF_EVENTS
51int perf_sysenter_enable(struct ftrace_event_call *call);
52void perf_sysenter_disable(struct ftrace_event_call *call);
53int perf_sysexit_enable(struct ftrace_event_call *call);
54void perf_sysexit_disable(struct ftrace_event_call *call);
55#endif
56
57#endif /* _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/trace_events.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_fields: list of fields for syscall_enter trace event
21 * @enter_event: associated syscall_enter trace event
22 * @exit_event: associated syscall_exit trace event
23 */
24struct syscall_metadata {
25	const char	*name;
26	int		syscall_nr;
27	int		nb_args;
28	const char	**types;
29	const char	**args;
30	struct list_head enter_fields;
31
32	struct trace_event_call *enter_event;
33	struct trace_event_call *exit_event;
34};
35
36#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
50#endif /* _TRACE_SYSCALL_H */