[S390] use generic sys_ptrace

After the PT_IEEE_IP hack has been removed s390 can now use
the common code sys_ptrace function.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 1 insertions, 38 deletions

diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 9dbaef44e8ec..7f4270163744 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -607,18 +607,8 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data)
 }
 #endif
 
-static int
-do_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-        int ret;
-
-        if (request == PTRACE_ATTACH)
-                return ptrace_attach(child);
-
-        ret = ptrace_check_attach(child, request == PTRACE_KILL);
-        if (ret < 0)
-                return ret;
-
         switch (request) {
         case PTRACE_SYSCALL:
                 /* continue and stop at next (return from) syscall */
@@ -673,31 +663,6 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
         return -EIO;
 }
 
-asmlinkage long
-sys_ptrace(long request, long pid, long addr, long data)
-{
-        struct task_struct *child;
-        int ret;
-
-        lock_kernel();
-        if (request == PTRACE_TRACEME) {
-                 ret = ptrace_traceme();
-                 goto out;
-        }
-
-        child = ptrace_get_task_struct(pid);
-        if (IS_ERR(child)) {
-                ret = PTR_ERR(child);
-                goto out;
-        }
-
-        ret = do_ptrace(child, request, addr, data);
-        put_task_struct(child);
-out:
-        unlock_kernel();
-        return ret;
-}
-
 asmlinkage void
 syscall_trace(struct pt_regs *regs, int entryexit)
 {
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index 61f6952f2e35..441d7c260857 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -463,8 +463,6 @@ struct user_regs_struct
 };
 
 #ifdef __KERNEL__
-#define __ARCH_SYS_PTRACE       1
-
 /*
  * These are defined as per linux/ptrace.h, which see.
  */