From: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Date: Fri, 21 May 2010 11:02:56 +0000 (-0400)
Subject: Sleep instead of busy waiting.
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Fkernel%2Fsamples%2Fworkqueue%2F.git;a=commitdiff_plain;h=8a97a11b951444897afcdca19721284b72e14539

Sleep instead of busy waiting.
---

diff --git a/block_wq.c b/block_wq.c
index ae6d8ab..751728c 100644
--- 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)