Frederic Weisbecker | 47788c5 | 2009-04-08 20:40:59 +0200 | [diff] [blame] | 1 | #ifndef _TRACE_SYSCALL_H |
| 2 | #define _TRACE_SYSCALL_H |
| 3 | |
Jason Baron | a871bd3 | 2009-08-10 16:52:31 -0400 | [diff] [blame^] | 4 | #include <linux/tracepoint.h> |
| 5 | |
Frederic Weisbecker | 47788c5 | 2009-04-08 20:40:59 +0200 | [diff] [blame] | 6 | #include <asm/ptrace.h> |
| 7 | |
Jason Baron | a871bd3 | 2009-08-10 16:52:31 -0400 | [diff] [blame^] | 8 | |
| 9 | extern void syscall_regfunc(void); |
| 10 | extern void syscall_unregfunc(void); |
| 11 | |
| 12 | DECLARE_TRACE_WITH_CALLBACK(syscall_enter, |
| 13 | TP_PROTO(struct pt_regs *regs, long id), |
| 14 | TP_ARGS(regs, id), |
| 15 | syscall_regfunc, |
| 16 | syscall_unregfunc |
| 17 | ); |
| 18 | |
| 19 | DECLARE_TRACE_WITH_CALLBACK(syscall_exit, |
| 20 | TP_PROTO(struct pt_regs *regs, long ret), |
| 21 | TP_ARGS(regs, ret), |
| 22 | syscall_regfunc, |
| 23 | syscall_unregfunc |
| 24 | ); |
| 25 | |
Frederic Weisbecker | 47788c5 | 2009-04-08 20:40:59 +0200 | [diff] [blame] | 26 | /* |
| 27 | * A syscall entry in the ftrace syscalls array. |
| 28 | * |
| 29 | * @name: name of the syscall |
| 30 | * @nb_args: number of parameters it takes |
| 31 | * @types: list of types as strings |
| 32 | * @args: list of args as strings (args[i] matches types[i]) |
| 33 | */ |
| 34 | struct syscall_metadata { |
| 35 | const char *name; |
| 36 | int nb_args; |
| 37 | const char **types; |
| 38 | const char **args; |
| 39 | }; |
| 40 | |
| 41 | #ifdef CONFIG_FTRACE_SYSCALLS |
Frederic Weisbecker | 47788c5 | 2009-04-08 20:40:59 +0200 | [diff] [blame] | 42 | extern struct syscall_metadata *syscall_nr_to_meta(int nr); |
| 43 | extern void start_ftrace_syscalls(void); |
| 44 | extern void stop_ftrace_syscalls(void); |
| 45 | extern void ftrace_syscall_enter(struct pt_regs *regs); |
| 46 | extern void ftrace_syscall_exit(struct pt_regs *regs); |
| 47 | #else |
| 48 | static inline void start_ftrace_syscalls(void) { } |
| 49 | static inline void stop_ftrace_syscalls(void) { } |
| 50 | static inline void ftrace_syscall_enter(struct pt_regs *regs) { } |
| 51 | static inline void ftrace_syscall_exit(struct pt_regs *regs) { } |
| 52 | #endif |
| 53 | |
| 54 | #endif /* _TRACE_SYSCALL_H */ |