[NET]: fix-up schedule_timeout() usage

Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size.  Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index b3ad49f..ef430b1e 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -1452,8 +1452,7 @@
 		thread_lock();
 		t->control |= T_REMDEV;
 		thread_unlock();
-		current->state = TASK_INTERRUPTIBLE;
-		schedule_timeout(HZ/8);  /* Propagate thread->control  */
+		schedule_timeout_interruptible(msecs_to_jiffies(125));  /* Propagate thread->control  */
 		ret = count;
                 sprintf(pg_result, "OK: rem_device_all");
 		goto out;
@@ -1716,10 +1715,9 @@
 	printk(KERN_INFO "sleeping for %d\n", (int)(spin_until_us - now));
 	while (now < spin_until_us) {
 		/* TODO: optimise sleeping behavior */
-		if (spin_until_us - now > (1000000/HZ)+1) {
-			current->state = TASK_INTERRUPTIBLE;
-			schedule_timeout(1);
-		} else if (spin_until_us - now > 100) {
+		if (spin_until_us - now > jiffies_to_usecs(1)+1)
+			schedule_timeout_interruptible(1);
+		else if (spin_until_us - now > 100) {
 			do_softirq();
 			if (!pkt_dev->running)
 				return;
@@ -2449,8 +2447,7 @@
 	}
 	thread_unlock();
 
-	current->state = TASK_INTERRUPTIBLE;
-	schedule_timeout(HZ/8);  /* Propagate thread->control  */
+	schedule_timeout_interruptible(msecs_to_jiffies(125));  /* Propagate thread->control  */
 			
 	pktgen_wait_all_threads_run();
 }