X-Git-Url: http://git.agner.ch/gitweb/?p=linux-drm-fsl-dcu.git;a=blobdiff_plain;f=net%2Fcore%2Fdst.c;h=61dd9d3951f1017697fe223a988e876466c5194d;hp=836ec66069254752c7ca2b9db0a597419dd758a2;hb=958b7f37ee0fb2846c8d44310a68ae9605614ff9;hpb=7e23772f414cdbfb2a08aed237d6e926bb1cb728

diff --git a/net/core/dst.c b/net/core/dst.c
index 836ec6606925..61dd9d3951f1 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -29,7 +29,7 @@
  * 4) All operations modify state, so a spinlock is used.
  */
 static struct dst_entry 	*dst_garbage_list;
-#if RT_CACHE_DEBUG >= 2 
+#if RT_CACHE_DEBUG >= 2
 static atomic_t			 dst_total = ATOMIC_INIT(0);
 #endif
 static DEFINE_SPINLOCK(dst_lock);
@@ -99,7 +99,14 @@ static void dst_run_gc(unsigned long dummy)
 	printk("dst_total: %d/%d %ld\n",
 	       atomic_read(&dst_total), delayed,  dst_gc_timer_expires);
 #endif
-	mod_timer(&dst_gc_timer, jiffies + dst_gc_timer_expires);
+	/* if the next desired timer is more than 4 seconds in the future
+	 * then round the timer to whole seconds
+	 */
+	if (dst_gc_timer_expires > 4*HZ)
+		mod_timer(&dst_gc_timer,
+			round_jiffies(jiffies + dst_gc_timer_expires));
+	else
+		mod_timer(&dst_gc_timer, jiffies + dst_gc_timer_expires);
 
 out:
 	spin_unlock(&dst_lock);
@@ -125,17 +132,16 @@ void * dst_alloc(struct dst_ops * ops)
 		if (ops->gc())
 			return NULL;
 	}
-	dst = kmem_cache_alloc(ops->kmem_cachep, GFP_ATOMIC);
+	dst = kmem_cache_zalloc(ops->kmem_cachep, GFP_ATOMIC);
 	if (!dst)
 		return NULL;
-	memset(dst, 0, ops->entry_size);
 	atomic_set(&dst->__refcnt, 0);
 	dst->ops = ops;
 	dst->lastuse = jiffies;
 	dst->path = dst;
 	dst->input = dst_discard_in;
 	dst->output = dst_discard_out;
-#if RT_CACHE_DEBUG >= 2 
+#if RT_CACHE_DEBUG >= 2
 	atomic_inc(&dst_total);
 #endif
 	atomic_inc(&ops->entries);
@@ -196,7 +202,7 @@ again:
 		dst->ops->destroy(dst);
 	if (dst->dev)
 		dev_put(dst->dev);
-#if RT_CACHE_DEBUG >= 2 
+#if RT_CACHE_DEBUG >= 2
 	atomic_dec(&dst_total);
 #endif
 	kmem_cache_free(dst->ops->kmem_cachep, dst);