hrtimer: use nanosleep specific restart_block fields

Convert all the nanosleep related users of restart_block to the
new nanosleep specific restart_block fields.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/compat.c

@@ -47,15 +47,14 @@ static long compat_nanosleep_restart(struct restart_block *restart)
 	mm_segment_t oldfs;
 	long ret;
 
-	rmtp = (struct compat_timespec __user *)(restart->arg1);
-	restart->arg1 = (unsigned long)&rmt;
+	restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	ret = hrtimer_nanosleep_restart(restart);
 	set_fs(oldfs);
 
 	if (ret) {
-		restart->arg1 = (unsigned long)rmtp;
+		rmtp = restart->nanosleep.compat_rmtp;
 
 		if (rmtp && put_compat_timespec(&rmt, rmtp))
 			return -EFAULT;
@@ -89,7 +88,7 @@ asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
 			= &current_thread_info()->restart_block;
 
 		restart->fn = compat_nanosleep_restart;
-		restart->arg1 = (unsigned long)rmtp;
+		restart->nanosleep.compat_rmtp = rmtp;
 
 		if (rmtp && put_compat_timespec(&rmt, rmtp))
 			return -EFAULT;
@@ -607,9 +606,9 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
 	long err;
 	mm_segment_t oldfs;
 	struct timespec tu;
-	struct compat_timespec *rmtp = (struct compat_timespec *)(restart->arg1);
+	struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp;
 
-	restart->arg1 = (unsigned long) &tu;
+	restart->nanosleep.rmtp = (struct timespec __user *) &tu;
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = clock_nanosleep_restart(restart);
@@ -621,7 +620,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
 
 	if (err == -ERESTART_RESTARTBLOCK) {
 		restart->fn = compat_clock_nanosleep_restart;
-		restart->arg1 = (unsigned long) rmtp;
+		restart->nanosleep.compat_rmtp = rmtp;
 	}
 	return err;
 }
@@ -652,7 +651,7 @@ long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
 	if (err == -ERESTART_RESTARTBLOCK) {
 		restart = &current_thread_info()->restart_block;
 		restart->fn = compat_clock_nanosleep_restart;
-		restart->arg1 = (unsigned long) rmtp;
+		restart->nanosleep.compat_rmtp = rmtp;
 	}
 	return err;
 }

kernel/hrtimer.c

@@ -1354,13 +1354,13 @@ long __sched hrtimer_nanosleep_restart(struct restart_block *restart)
 	struct hrtimer_sleeper t;
 	struct timespec __user  *rmtp;
 
-	hrtimer_init(&t.timer, restart->arg0, HRTIMER_MODE_ABS);
-	t.timer.expires.tv64 = ((u64)restart->arg3 << 32) | (u64) restart->arg2;
+	hrtimer_init(&t.timer, restart->nanosleep.index, HRTIMER_MODE_ABS);
+	t.timer.expires.tv64 = restart->nanosleep.expires;
 
 	if (do_nanosleep(&t, HRTIMER_MODE_ABS))
 		return 0;
 
-	rmtp = (struct timespec __user *)restart->arg1;
+	rmtp = restart->nanosleep.rmtp;
 	if (rmtp) {
 		int ret = update_rmtp(&t.timer, rmtp);
 		if (ret <= 0)
@@ -1394,10 +1394,9 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp,
 
 	restart = &current_thread_info()->restart_block;
 	restart->fn = hrtimer_nanosleep_restart;
-	restart->arg0 = (unsigned long) t.timer.base->index;
-	restart->arg1 = (unsigned long) rmtp;
-	restart->arg2 = t.timer.expires.tv64 & 0xFFFFFFFF;
-	restart->arg3 = t.timer.expires.tv64 >> 32;
+	restart->nanosleep.index = t.timer.base->index;
+	restart->nanosleep.rmtp = rmtp;
+	restart->nanosleep.expires = t.timer.expires.tv64;
 
 	return -ERESTART_RESTARTBLOCK;
 }