x86: arch_has_single_step

This defines the new standard arch_has_single_step macro.  It makes the
existing set_singlestep and clear_singlestep entry points global, and
renames them to the new standard names user_enable_single_step and
user_disable_single_step, respectively.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 6 insertions, 6 deletions

diff --git a/arch/x86/kernel/ptrace_32.c b/arch/x86/kernel/ptrace_32.c
index 4619bda470b6..1402a54ef61f 100644
--- a/arch/x86/kernel/ptrace_32.c
+++ b/arch/x86/kernel/ptrace_32.c
@@ -218,7 +218,7 @@ static inline int is_setting_trap_flag(struct task_struct *child, struct pt_regs
 	return 0;
 }
 
-static void set_singlestep(struct task_struct *child)
+void user_enable_single_step(struct task_struct *child)
 {
 	struct pt_regs *regs = get_child_regs(child);
 
@@ -249,7 +249,7 @@ static void set_singlestep(struct task_struct *child)
 	child->ptrace |= PT_DTRACE;
 }
 
-static void clear_singlestep(struct task_struct *child)
+void user_disable_single_step(struct task_struct *child)
 {
 	/* Always clear TIF_SINGLESTEP... */
 	clear_tsk_thread_flag(child, TIF_SINGLESTEP);
@@ -269,7 +269,7 @@ static void clear_singlestep(struct task_struct *child)
  */
 void ptrace_disable(struct task_struct *child)
 { 
-	clear_singlestep(child);
+	user_disable_single_step(child);
 	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
 }
 
@@ -403,7 +403,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		}
 		child->exit_code = data;
 		/* make sure the single step bit is not set. */
-		clear_singlestep(child);
+		user_disable_single_step(child);
 		wake_up_process(child);
 		ret = 0;
 		break;
@@ -419,7 +419,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			break;
 		child->exit_code = SIGKILL;
 		/* make sure the single step bit is not set. */
-		clear_singlestep(child);
+		user_disable_single_step(child);
 		wake_up_process(child);
 		break;
 
@@ -435,7 +435,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
 
 		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		set_singlestep(child);
+		user_enable_single_step(child);
 		child->exit_code = data;
 		/* give it a chance to run. */
 		wake_up_process(child);