linux-kernel - [PATCH 9/9] ehca: use kvcalloc and kvfree

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Date:	Thu, 13 May 2010 19:18:15 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	akpm@...ux-foundation.org
Cc:	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Roland Dreier <rolandd@...co.com>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	Changli Gao <xiaosuo@...il.com>
Subject: [PATCH 9/9] ehca: use kvcalloc and kvfree

use kvcalloc and kvfree

use kvcalloc and kvfree, but I haven't test it, as I don't have that machine.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
----
 drivers/infiniband/hw/ehca/ipz_pt_fn.c |   22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.c b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
index 1596e30..f0e7bd4 100644
--- a/drivers/infiniband/hw/ehca/ipz_pt_fn.c
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
@@ -38,8 +38,6 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <linux/slab.h>
-
 #include "ehca_tools.h"
 #include "ipz_pt_fn.h"
 #include "ehca_classes.h"
@@ -222,15 +220,11 @@ int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
 	queue->small_page = NULL;
 
 	/* allocate queue page pointers */
-	queue->queue_pages = kmalloc(nr_of_pages * sizeof(void *), GFP_KERNEL);
+	queue->queue_pages = kvcalloc(nr_of_pages, sizeof(void *));
 	if (!queue->queue_pages) {
-		queue->queue_pages = vmalloc(nr_of_pages * sizeof(void *));
-		if (!queue->queue_pages) {
-			ehca_gen_err("Couldn't allocate queue page list");
-			return 0;
-		}
+		ehca_gen_err("Couldn't allocate queue page list");
+		return 0;
 	}
-	memset(queue->queue_pages, 0, nr_of_pages * sizeof(void *));
 
 	/* allocate actual queue pages */
 	if (is_small) {
@@ -245,10 +239,7 @@ int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
 ipz_queue_ctor_exit0:
 	ehca_gen_err("Couldn't alloc pages queue=%p "
 		 "nr_of_pages=%x",  queue, nr_of_pages);
-	if (is_vmalloc_addr(queue->queue_pages))
-		vfree(queue->queue_pages);
-	else
-		kfree(queue->queue_pages);
+	kvfree(queue->queue_pages);
 
 	return 0;
 }
@@ -270,10 +261,7 @@ int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue)
 			free_page((unsigned long)queue->queue_pages[i]);
 	}
 
-	if (is_vmalloc_addr(queue->queue_pages))
-		vfree(queue->queue_pages);
-	else
-		kfree(queue->queue_pages);
+	kvfree(queue->queue_pages);
 
 	return 1;
 }
--
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