[PATCH] Fix function/macro name collision on i386 oprofile

The i386 OProfile code has a function named nmi_exit(), which collides with
the nmi_exit() macro in linux/hardirq.h.  At the moment, we get away with
it, because hardirq.h isn't included in the oprofile code.  I hit this as a
bug when working with a patch which (indirectly) adds a #include of
hardirq.h to oprofile.

Regardless, the name collision is probably not a good idea, so this patch
fixes it, renaming the oprofile function to op_nmi_exit().  It also renames
the nmi_init() and nmi_timer_init() functions similarly, for consistency.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/oprofile/init.c

@@ -15,9 +15,9 @@
  * with the NMI mode driver.
  */
 
-extern int nmi_init(struct oprofile_operations * ops);
-extern int nmi_timer_init(struct oprofile_operations * ops);
-extern void nmi_exit(void);
+extern int op_nmi_init(struct oprofile_operations * ops);
+extern int op_nmi_timer_init(struct oprofile_operations * ops);
+extern void op_nmi_exit(void);
 extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
 
 
@@ -28,11 +28,11 @@ int __init oprofile_arch_init(struct oprofile_operations * ops)
 	ret = -ENODEV;
 
 #ifdef CONFIG_X86_LOCAL_APIC
-	ret = nmi_init(ops);
+	ret = op_nmi_init(ops);
 #endif
 #ifdef CONFIG_X86_IO_APIC
 	if (ret < 0)
-		ret = nmi_timer_init(ops);
+		ret = op_nmi_timer_init(ops);
 #endif
 	ops->backtrace = x86_backtrace;
 
@@ -43,6 +43,6 @@ int __init oprofile_arch_init(struct oprofile_operations * ops)
 void oprofile_arch_exit(void)
 {
 #ifdef CONFIG_X86_LOCAL_APIC
-	nmi_exit();
+	op_nmi_exit();
 #endif
 }

arch/i386/oprofile/nmi_int.c

@@ -355,7 +355,7 @@ static int __init ppro_init(char ** cpu_type)
 /* in order to get driverfs right */
 static int using_nmi;
 
-int __init nmi_init(struct oprofile_operations *ops)
+int __init op_nmi_init(struct oprofile_operations *ops)
 {
 	__u8 vendor = boot_cpu_data.x86_vendor;
 	__u8 family = boot_cpu_data.x86;
@@ -420,7 +420,7 @@ int __init nmi_init(struct oprofile_operations *ops)
 }
 
 
-void nmi_exit(void)
+void op_nmi_exit(void)
 {
 	if (using_nmi)
 		exit_driverfs();

arch/i386/oprofile/nmi_timer_int.c

@@ -40,7 +40,7 @@ static void timer_stop(void)
 }
 
 
-int __init nmi_timer_init(struct oprofile_operations * ops)
+int __init op_nmi_timer_init(struct oprofile_operations * ops)
 {
 	extern int nmi_active;