staging: zcache: misc build/config

[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@oracle.com>
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index b80755da5394bd07b315ef090bdb6f2f7769d00f..118bf525b93105a200c18798c03ea5230b3a9edd 100644 (file)
--- 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 fd26509e5efa052a5d5ddebcb0b112a19dc419bc..625bae215eda609acceafcd2ac7b54ced7d3cdc2 100644 (file)
--- 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 (file)
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 (file)
index 0000000..7f64de4
--- /dev/null
+++ b/drivers/staging/zcache/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ZCACHE)   +=      zcache.o tmem.o