6 files changed, 28 insertions, 8 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 314addb2329d..dfea0f47ed3e 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -1,7 +1,6 @@
 #ifndef _LINUX_BINFMTS_H
 #define _LINUX_BINFMTS_H
 
-#include <linux/ptrace.h>
 #include <linux/capability.h>
 
 /*
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index 3129abe828fc..ebf16207732d 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -4,7 +4,6 @@
 #include <linux/types.h>
 #include <linux/signal.h>
 #include <linux/time.h>
-#include <linux/ptrace.h>
 #include <linux/user.h>
 
 struct elf_siginfo
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index d023d2360a71..80a57914bccc 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -54,6 +54,8 @@
 	.run_list	= LIST_HEAD_INIT(tsk.run_list),			\
 	.time_slice	= HZ,						\
 	.tasks		= LIST_HEAD_INIT(tsk.tasks),			\
+	.ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),		\
+	.ptrace_list	= LIST_HEAD_INIT(tsk.ptrace_list),		\
 	.real_parent	= &tsk,						\
 	.parent		= &tsk,						\
 	.children	= LIST_HEAD_INIT(tsk.children),			\
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c4395b9fe950..d731c02741b9 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -354,12 +354,6 @@ extern pte_t *FASTCALL(pte_alloc_map(struct mm_struct *mm, pmd_t *pmd, unsigned
 extern int handle_mm_fault(struct mm_struct *mm,struct vm_area_struct *vma, unsigned long address, int write_access);
 extern int make_pages_present(unsigned long addr, unsigned long end);
 extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write);
-extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char *dst, int len);
-extern int ptrace_writedata(struct task_struct *tsk, char * src, unsigned long dst, int len);
-extern int ptrace_attach(struct task_struct *tsk);
-extern int ptrace_detach(struct task_struct *, unsigned int);
-extern void ptrace_disable(struct task_struct *);
-extern int ptrace_check_attach(struct task_struct *task, int kill);
 
 int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start,
 		int len, int write, int force, struct page **pages, struct vm_area_struct **vmas);
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 0a02879d546f..78512fa922b9 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -3,6 +3,8 @@
 /* ptrace.h */
 /* structs and defines to help the user use the ptrace system call. */
 
+#include <linux/compiler.h>
+
 /* has the defines to get at the registers. */
 
 #define PTRACE_TRACEME		   0
@@ -23,4 +25,26 @@
 
 #include <asm/ptrace.h>
 
+extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char *dst, int len);
+extern int ptrace_writedata(struct task_struct *tsk, char * src, unsigned long dst, int len);
+extern int ptrace_attach(struct task_struct *tsk);
+extern int ptrace_detach(struct task_struct *, unsigned int);
+extern void ptrace_disable(struct task_struct *);
+extern int ptrace_check_attach(struct task_struct *task, int kill);
+extern void __ptrace_link(struct task_struct *child,
+				struct task_struct *new_parent);
+extern void __ptrace_unlink(struct task_struct *child);
+
+static inline void ptrace_link(struct task_struct *child,
+				struct task_struct *new_parent)
+{
+	if (unlikely(child->ptrace))
+		__ptrace_link(child, new_parent);
+}
+static inline void ptrace_unlink(struct task_struct *child)
+{
+	if (unlikely(child->ptrace))
+		__ptrace_unlink(child);
+}
+
 #endif
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5713927c300a..5afeecb164b9 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -270,6 +270,8 @@ struct task_struct {
 	unsigned int time_slice, first_time_slice;
 
 	struct list_head tasks;
+	struct list_head ptrace_children;
+	struct list_head ptrace_list;
 
 	struct mm_struct *mm, *active_mm;
 	struct list_head local_pages;