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#ifndef _TRACE_SYSCALL_H
#define _TRACE_SYSCALL_H
#include <linux/tracepoint.h>
#include <asm/ptrace.h>
extern void syscall_regfunc(void);
extern void syscall_unregfunc(void);
DECLARE_TRACE_WITH_CALLBACK(syscall_enter,
TP_PROTO(struct pt_regs *regs, long id),
TP_ARGS(regs, id),
syscall_regfunc,
syscall_unregfunc
);
DECLARE_TRACE_WITH_CALLBACK(syscall_exit,
TP_PROTO(struct pt_regs *regs, long ret),
TP_ARGS(regs, ret),
syscall_regfunc,
syscall_unregfunc
);
/*
* A syscall entry in the ftrace syscalls array.
*
* @name: name of the syscall
* @nb_args: number of parameters it takes
* @types: list of types as strings
* @args: list of args as strings (args[i] matches types[i])
*/
struct syscall_metadata {
const char *name;
int nb_args;
const char **types;
const char **args;
};
#ifdef CONFIG_FTRACE_SYSCALLS
extern struct syscall_metadata *syscall_nr_to_meta(int nr);
extern void start_ftrace_syscalls(void);
extern void stop_ftrace_syscalls(void);
extern void ftrace_syscall_enter(struct pt_regs *regs);
extern void ftrace_syscall_exit(struct pt_regs *regs);
#else
static inline void start_ftrace_syscalls(void) { }
static inline void stop_ftrace_syscalls(void) { }
static inline void ftrace_syscall_enter(struct pt_regs *regs) { }
static inline void ftrace_syscall_exit(struct pt_regs *regs) { }
#endif
#endif /* _TRACE_SYSCALL_H */
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