x86: remove TRAP_FLAG

This gets rid of the local constant macro TRAP_FLAG.
It's redundant with the public constant macro X86_EFLAGS_TF.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/ptrace_32.c

@@ -37,9 +37,6 @@
  */
 #define FLAG_MASK 0x00050dd5
 
-/* set's the trap flag. */
-#define TRAP_FLAG 0x100
-
 /*
  * Offset of eflags on child stack..
  */
@@ -235,11 +232,11 @@ static void set_singlestep(struct task_struct *child)
 	/*
 	 * If TF was already set, don't do anything else
 	 */
-	if (regs->eflags & TRAP_FLAG)
+	if (regs->eflags & X86_EFLAGS_TF)
 		return;
 
 	/* Set TF on the kernel stack.. */
-	regs->eflags |= TRAP_FLAG;
+	regs->eflags |= X86_EFLAGS_TF;
 
 	/*
 	 * ..but if TF is changed by the instruction we will trace,
@@ -260,7 +257,7 @@ static void clear_singlestep(struct task_struct *child)
 	/* But touch TF only if it was set by us.. */
 	if (child->ptrace & PT_DTRACE) {
 		struct pt_regs *regs = get_child_regs(child);
-		regs->eflags &= ~TRAP_FLAG;
+		regs->eflags &= ~X86_EFLAGS_TF;
 		child->ptrace &= ~PT_DTRACE;
 	}
 }

arch/x86/kernel/ptrace_64.c

@@ -42,9 +42,6 @@
  */
 #define FLAG_MASK 0x54dd5UL
 
-/* set's the trap flag. */
-#define TRAP_FLAG 0x100UL
-
 /*
  * eflags and offset of eflags on child stack..
  */
@@ -187,11 +184,11 @@ static void set_singlestep(struct task_struct *child)
 	/*
 	 * If TF was already set, don't do anything else
 	 */
-	if (regs->eflags & TRAP_FLAG)
+	if (regs->eflags & X86_EFLAGS_TF)
 		return;
 
 	/* Set TF on the kernel stack.. */
-	regs->eflags |= TRAP_FLAG;
+	regs->eflags |= X86_EFLAGS_TF;
 
 	/*
 	 * ..but if TF is changed by the instruction we will trace,
@@ -212,7 +209,7 @@ static void clear_singlestep(struct task_struct *child)
 	/* But touch TF only if it was set by us.. */
 	if (child->ptrace & PT_DTRACE) {
 		struct pt_regs *regs = task_pt_regs(child);
-		regs->eflags &= ~TRAP_FLAG;
+		regs->eflags &= ~X86_EFLAGS_TF;
 		child->ptrace &= ~PT_DTRACE;
 	}
 }