[PATCH 373/961] staging: zcache: misc build/config

[Greg Kroah-Hartman]

From: Dan Magenheimer <dan.magenheimer at oracle.com>

[PATCH V2 3/3] drivers/staging: zcache: misc build/config

Makefiles and Kconfigs to build zcache in drivers/staging

There is a dependency on xvmalloc.* which in 2.6.37 resides
in drivers/staging/zram.  Should this move or disappear,
some Makefile/Kconfig changes will be required.

Signed-off-by: Dan Magenheimer <dan.magenheimer at oracle.com>
Signed-off-by: Nitin Gupta <ngupta at vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
 drivers/staging/Kconfig         |    2 ++
 drivers/staging/Makefile        |    1 +
 drivers/staging/zcache/Kconfig  |   13 +++++++++++++
 drivers/staging/zcache/Makefile |    1 +
 4 files changed, 17 insertions(+), 0 deletions(-)
 create mode 100644 drivers/staging/zcache/Kconfig
 create mode 100644 drivers/staging/zcache/Makefile

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index b80755d..118bf52 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -127,6 +127,8 @@ source "drivers/staging/cs5535_gpio/Kconfig"
 
 source "drivers/staging/zram/Kconfig"
 
+source "drivers/staging/zcache/Kconfig"
+
 source "drivers/staging/wlags49_h2/Kconfig"
 
 source "drivers/staging/wlags49_h25/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index fd26509..625bae2 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_DX_SEP)            += sep/
 obj-$(CONFIG_IIO)		+= iio/
 obj-$(CONFIG_CS5535_GPIO)	+= cs5535_gpio/
 obj-$(CONFIG_ZRAM)		+= zram/
+obj-$(CONFIG_ZCACHE)		+= zcache/
 obj-$(CONFIG_WLAGS49_H2)	+= wlags49_h2/
 obj-$(CONFIG_WLAGS49_H25)	+= wlags49_h25/
 obj-$(CONFIG_SAMSUNG_LAPTOP)	+= samsung-laptop/
diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
new file mode 100644
index 0000000..7fabcb2
--- /dev/null
+++ b/drivers/staging/zcache/Kconfig
@@ -0,0 +1,13 @@
+config ZCACHE
+	tristate "Dynamic compression of swap pages and clean pagecache pages"
+	depends on CLEANCACHE || FRONTSWAP
+	select XVMALLOC
+	select LZO_COMPRESS
+	select LZO_DECOMPRESS
+	default n
+	help
+	  Zcache doubles RAM efficiency while providing a significant
+	  performance boosts on many workloads.  Zcache uses lzo1x
+	  compression and an in-kernel implementation of transcendent
+	  memory to store clean page cache pages and swap in RAM,
+	  providing a noticeable reduction in disk I/O.
diff --git a/drivers/staging/zcache/Makefile b/drivers/staging/zcache/Makefile
new file mode 100644
index 0000000..7f64de4
--- /dev/null
+++ b/drivers/staging/zcache/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ZCACHE)	+=	zcache.o tmem.o
-- 
1.7.4.1