1 files changed, 7 insertions, 14 deletions

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 9254ba2f46fc..13af4006a40f 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -457,13 +457,10 @@ void ptrace_cancel_bpt(struct task_struct *child)
 
 /*
  * Called by kernel/ptrace.c when detaching..
- *
- * Make sure the single step bit is not set.
  */
 void ptrace_disable(struct task_struct *child)
 {
-        child->ptrace &= ~PT_SINGLESTEP;
-        ptrace_cancel_bpt(child);
+        single_step_disable(child);
 }
 
 /*
@@ -712,9 +709,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         else
                                 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                         child->exit_code = data;
-                        /* make sure single-step breakpoint is gone. */
-                        child->ptrace &= ~PT_SINGLESTEP;
-                        ptrace_cancel_bpt(child);
+                        single_step_disable(child);
                         wake_up_process(child);
                         ret = 0;
                         break;
@@ -725,9 +720,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                  * exit.
                  */
                 case PTRACE_KILL:
-                        /* make sure single-step breakpoint is gone. */
-                        child->ptrace &= ~PT_SINGLESTEP;
-                        ptrace_cancel_bpt(child);
+                        single_step_disable(child);
                         if (child->exit_state != EXIT_ZOMBIE) {
                                 child->exit_code = SIGKILL;
                                 wake_up_process(child);
@@ -742,7 +735,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         ret = -EIO;
                         if (!valid_signal(data))
                                 break;
-                        child->ptrace |= PT_SINGLESTEP;
+                        single_step_enable(child);
                         clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                         child->exit_code = data;
                         /* give it a chance to run. */
@@ -786,8 +779,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
 
                 case PTRACE_SET_SYSCALL:
+                        task_thread_info(child)->syscall = data;
                         ret = 0;
-                        child->ptrace_message = data;
                         break;
 
 #ifdef CONFIG_CRUNCH
@@ -824,7 +817,7 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
         ip = regs->ARM_ip;
         regs->ARM_ip = why;
 
-        current->ptrace_message = scno;
+        current_thread_info()->syscall = scno;
 
         /* the 0x80 provides a way for the tracing parent to distinguish
            between a syscall stop and SIGTRAP delivery */
@@ -841,5 +834,5 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
         }
         regs->ARM_ip = ip;
 
-        return current->ptrace_message;
+        return current_thread_info()->syscall;
 }