ptrace: remove PT_DTRACE from arch/m32r

m32r: PTRACE_SINGLESTEP sets PT_DTRACE, it is never used except cleared
after do_execve().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Hirokazu Takata <takata@linux-m32r.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 0 insertions, 9 deletions

diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
index 3e876f0baebc..67a01e1e4283 100644
--- a/arch/m32r/kernel/process.c
+++ b/arch/m32r/kernel/process.c
@@ -302,11 +302,6 @@ asmlinkage int sys_execve(char __user *ufilename, char __user * __user *uargv,
                 goto out;
 
         error = do_execve(filename, uargv, uenvp, &regs);
-        if (error == 0) {
-                task_lock(current);
-                current->ptrace &= ~PT_DTRACE;
-                task_unlock(current);
-        }
         putname(filename);
 out:
         return error;
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index 9aa615d3a5b2..bf0abe9e1f73 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -676,10 +676,6 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 if (!valid_signal(data))
                         break;
                 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                if ((child->ptrace & PT_DTRACE) == 0) {
-                        /* Spurious delayed TF traps may occur */
-                        child->ptrace |= PT_DTRACE;
-                }
 
                 /* Compute next pc.  */
                 pc = get_stack_long(child, PT_BPC);