Sleep instead of busy waiting.

diff --git a/block_wq.c b/block_wq.c
index ae6d8ab..751728c 100644 (file)
--- a/block_wq.c
+++ b/block_wq.c
@@ -29,12 +29,9 @@ MODULE_AUTHOR("Thadeu Lima de Souza Cascardo");
 
 static void work_block(struct work_struct *work)
 {
-       unsigned long tmp = jiffies + 5 * HZ;
        printk(KERN_INFO "Blocking other works in the queue\n");
        printk(KERN_INFO "Executing task in CPU %d\n", smp_processor_id());
-       /* We also kick the CPU high */
-       while (!time_after(jiffies, tmp))
-               cpu_relax();
+       msleep(5);
 }
 
 static void work_print(struct work_struct *work)