[S390] single-step cleanup
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 1d81bf9..6e036ba 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -86,13 +86,13 @@
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 @@
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 @@
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 @@
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;
@@ -675,10 +675,7 @@
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;