uml: simplify interval setting

set_interval took a timer type as an argument, but it always specified a
virtual timer.  So, it is not needed, and it is gone, and set_interval is
simplified appropriately.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/os.h

@@ -252,7 +252,7 @@ extern void os_dump_core(void);
 
 extern int switch_timers(int to_real);
 extern void idle_sleep(int secs);
-extern int set_interval(int is_virtual);
+extern int set_interval(void);
 extern void disable_timer(void);
 extern void uml_idle_timer(void);
 extern unsigned long long os_nsecs(void);

arch/um/kernel/time.c

@@ -102,7 +102,7 @@ static void register_timer(void)
 		printk(KERN_ERR "register_timer : request_irq failed - "
 		       "errno = %d\n", -err);
 
-	err = set_interval(1);
+	err = set_interval();
 	if (err != 0)
 		printk(KERN_ERR "register_timer : set_interval failed - "
 		       "errno = %d\n", -err);

arch/um/os-Linux/skas/process.c

@@ -178,7 +178,7 @@ static int userspace_tramp(void *stack)
 	ptrace(PTRACE_TRACEME, 0, 0, 0);
 
 	init_new_thread_signals();
-	err = set_interval(1);
+	err = set_interval();
 	if (err)
 		panic("userspace_tramp - setting timer failed, errno = %d\n",
 		      err);

arch/um/os-Linux/time.c

@@ -14,14 +14,13 @@
 
 static int is_real_timer = 0;
 
-int set_interval(int is_virtual)
+int set_interval(void)
 {
 	int usec = 1000000/UM_HZ;
-	int timer_type = is_virtual ? ITIMER_VIRTUAL : ITIMER_REAL;
 	struct itimerval interval = ((struct itimerval) { { 0, usec },
 							  { 0, usec } });
 
-	if (setitimer(timer_type, &interval, NULL) == -1)
+	if (setitimer(ITIMER_VIRTUAL, &interval, NULL) == -1)
 		return -errno;
 
 	return 0;