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authorRobert Jennings <rcj@linux.vnet.ibm.com>2011-01-28 08:59:26 -0600
committerGreg Kroah-Hartman <gregkh@suse.de>2011-02-04 13:29:11 -0800
commitb1f5b81ebeee3974a8c793cafacace991d9a864d (patch)
tree90f18ed06d18aec6bb0794a449392ae6ff6def93 /drivers/staging/zram
parente3f201b541ff6748db77b857d2ae69fc9dbbee11 (diff)
zram/xvmalloc: create CONFIG_ZRAM_DEBUG for debug code
Add a debug config flag to enable debug printk output and future debug code. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/zram')
-rw-r--r--drivers/staging/zram/Kconfig8
-rw-r--r--drivers/staging/zram/xvmalloc.c4
-rw-r--r--drivers/staging/zram/zram_drv.c4
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/staging/zram/Kconfig b/drivers/staging/zram/Kconfig
index d3982e6fdb40..2f3b484ce5a4 100644
--- a/drivers/staging/zram/Kconfig
+++ b/drivers/staging/zram/Kconfig
@@ -15,3 +15,11 @@ config ZRAM
See zram.txt for more information.
Project home: http://compcache.googlecode.com/
+
+config ZRAM_DEBUG
+ bool "Compressed RAM block device debug support"
+ depends on ZRAM
+ default n
+ help
+ This option adds additional debugging code to the compressed
+ RAM block device driver.
diff --git a/drivers/staging/zram/xvmalloc.c b/drivers/staging/zram/xvmalloc.c
index 9cbe04a496e1..4f6cb8de6865 100644
--- a/drivers/staging/zram/xvmalloc.c
+++ b/drivers/staging/zram/xvmalloc.c
@@ -10,6 +10,10 @@
* Released under the terms of GNU General Public License Version 2.0
*/
+#ifdef CONFIG_ZRAM_DEBUG
+#define DEBUG
+#endif
+
#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/highmem.h>
diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index 3c8ecab70e97..7d11c595c7d2 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -15,6 +15,10 @@
#define KMSG_COMPONENT "zram"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#ifdef CONFIG_ZRAM_DEBUG
+#define DEBUG
+#endif
+
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/bio.h>