[PATCH] uml: ifdef a mode-specific function

uml_idle_timer is tt-mode only, so ifdef it as such to make it easier to spot
when tt mode is killed.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/include/kern_util.h

@@ -72,7 +72,6 @@ extern void init_flush_vm(void);
 extern void *syscall_sp(void *t);
 extern void syscall_trace(union uml_pt_regs *regs, int entryexit);
 extern int hz(void);
-extern void uml_idle_timer(void);
 extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs);
 extern int external_pid(void *t);
 extern void interrupt_end(void);

arch/um/os-Linux/time.c

@@ -66,6 +66,7 @@ void switch_timers(int to_real)
 		       errno);
 }
 
+#ifdef UML_CONFIG_MODE_TT
 void uml_idle_timer(void)
 {
 	if(signal(SIGVTALRM, SIG_IGN) == SIG_ERR)
@@ -75,6 +76,7 @@ void uml_idle_timer(void)
 		    SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
 	set_interval(ITIMER_REAL);
 }
+#endif
 
 unsigned long long os_nsecs(void)
 {