1 files changed, 35 insertions, 0 deletions

diff --git a/include/trace/syscall.h b/include/trace/syscall.h
new file mode 100644
index 000000000000..8cfe515cbc47
--- /dev/null
+++ b/include/trace/syscall.h
@@ -0,0 +1,35 @@
+#ifndef _TRACE_SYSCALL_H
+#define _TRACE_SYSCALL_H
+
+#include <asm/ptrace.h>
+
+/*
+ * 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 void arch_init_ftrace_syscalls(void);
+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 */