syscall.h 1.86 KB
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#ifndef _TRACE_SYSCALL_H
#define _TRACE_SYSCALL_H

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#include <linux/tracepoint.h>
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#include <linux/unistd.h>
#include <linux/ftrace_event.h>
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#include <asm/ptrace.h>

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/*
 * A syscall entry in the ftrace syscalls array.
 *
 * @name: name of the syscall
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 * @syscall_nr: number of the syscall
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 * @nb_args: number of parameters it takes
 * @types: list of types as strings
 * @args: list of args as strings (args[i] matches types[i])
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 * @enter_event: associated syscall_enter trace event
 * @exit_event: associated syscall_exit trace event
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 */
struct syscall_metadata {
	const char	*name;
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	int		syscall_nr;
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	int		nb_args;
	const char	**types;
	const char	**args;
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	struct ftrace_event_call *enter_event;
	struct ftrace_event_call *exit_event;
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};

#ifdef CONFIG_FTRACE_SYSCALLS
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extern unsigned long arch_syscall_addr(int nr);
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extern int syscall_enter_format(struct ftrace_event_call *call,
				struct trace_seq *s);
extern int syscall_exit_format(struct ftrace_event_call *call,
				struct trace_seq *s);
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extern int syscall_enter_define_fields(struct ftrace_event_call *call);
extern int syscall_exit_define_fields(struct ftrace_event_call *call);
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extern int reg_event_syscall_enter(struct ftrace_event_call *call);
extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
extern int reg_event_syscall_exit(struct ftrace_event_call *call);
extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
extern int
ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
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enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
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#endif
#ifdef CONFIG_EVENT_PROFILE
int reg_prof_syscall_enter(char *name);
void unreg_prof_syscall_enter(char *name);
int reg_prof_syscall_exit(char *name);
void unreg_prof_syscall_exit(char *name);

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#endif

#endif /* _TRACE_SYSCALL_H */