From a871bd33a6c0bc86fb47cd02ea2650dd43d3d95f Mon Sep 17 00:00:00 2001
From: Jason Baron <jbaron@redhat.com>
Date: Mon, 10 Aug 2009 16:52:31 -0400
Subject: tracing: Add syscall tracepoints

add two tracepoints in syscall exit and entry path, conditioned on
TIF_SYSCALL_FTRACE. Supports the syscall trace event code.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jiaying Zhang <jiayingz@google.com>
Cc: Martin Bligh <mbligh@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
 include/trace/syscall.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'include')

diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index c55fcce4fbb..3951d774de1 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -1,8 +1,28 @@
 #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.
  *
-- 
cgit v1.2.3