Merge git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

[sfrench/cifs-2.6.git] / arch / s390 / kernel / ptrace.c

diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index f4503ca27630165b4166d93f275a90a525dac0e6..6e036bae987534d0c46e05159e6de1f310cc41bd 100644 (file)
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -86,13 +86,13 @@ FixPerRegisters(struct task_struct *task)
                per_info->control_regs.bits.storage_alt_space_ctl = 0;
 }
 
-static void set_single_step(struct task_struct *task)
+void user_enable_single_step(struct task_struct *task)
 {
        task->thread.per_info.single_step = 1;
        FixPerRegisters(task);
 }
 
-static void clear_single_step(struct task_struct *task)
+void user_disable_single_step(struct task_struct *task)
 {
        task->thread.per_info.single_step = 0;
        FixPerRegisters(task);
@@ -107,7 +107,7 @@ void
 ptrace_disable(struct task_struct *child)
 {
        /* make sure the single step bit is not set. */
-       clear_single_step(child);
+       user_disable_single_step(child);
 }
 
 #ifndef CONFIG_64BIT
@@ -651,7 +651,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
                        clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                child->exit_code = data;
                /* make sure the single step bit is not set. */
-               clear_single_step(child);
+               user_disable_single_step(child);
                wake_up_process(child);
                return 0;
 
@@ -665,7 +665,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
                        return 0;
                child->exit_code = SIGKILL;
                /* make sure the single step bit is not set. */
-               clear_single_step(child);
+               user_disable_single_step(child);
                wake_up_process(child);
                return 0;
 
@@ -675,19 +675,11 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
                        return -EIO;
                clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                child->exit_code = data;
-               if (data)
-                       set_tsk_thread_flag(child, TIF_SINGLE_STEP);
-               else
-                       set_single_step(child);
+               user_enable_single_step(child);
                /* give it a chance to run. */
                wake_up_process(child);
                return 0;
 
-       case PTRACE_DETACH:
-               /* detach a process that was attached. */
-               return ptrace_detach(child, data);
-
-
        /* Do requests that differ for 31/64 bit */
        default:
 #ifdef CONFIG_COMPAT