Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */