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drivers/staging: zcache: misc build/config

PATCH In review Dan Magenheimer 1 participant 1 message Feb 7, 2011

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Dan Magenheimer

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PATCH v2 3/3 drivers/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 <[email protected]>
Signed-off-by Nitin Gupta <[email protected]>

---

Diffstat:

 drivers/staging/Kconfig                  |    2 ++
 drivers/staging/Makefile                 |    1 +
 drivers/staging/zcache/Kconfig           |   13 +++++++++++++
 drivers/staging/zcache/Makefile          |    1 +
 4 files changed, 17 insertions(+)
drivers/staging/zcache/Makefile +1 -0
@@ -0,0 +1 @@
+obj-$(CONFIG_ZCACHE)	+=	zcache.o tmem.o
drivers/staging/zcache/Kconfig +13 -0
@@ -0,0 +1,13 @@
+config ZCACHE
+	tristate "Dynamic compression of swap pages and clean pagecache pages"
+	depends on CLEANCACHE || FRONTSWAP
+	select XVMALLOC
+	select LZO_COMPRESS
+	select LZO_DECOMPRESS
+	default n
+	help
+	  Zcache doubles RAM efficiency while providing a significant
+	  performance boosts on many workloads.  Zcache uses lzo1x
+	  compression and an in-kernel implementation of transcendent
+	  memory to store clean page cache pages and swap in RAM,
+	  providing a noticeable reduction in disk I/O.
drivers/staging/Makefile +1 -0
@@ -44,6 +44,7 @@ obj-$(CONFIG_VME_BUS)		+= vme/
 obj-$(CONFIG_MRST_RAR_HANDLER)	+= memrar/
 obj-$(CONFIG_IIO)		+= iio/
 obj-$(CONFIG_ZRAM)		+= zram/
+obj-$(CONFIG_ZCACHE)		+= zcache/
 obj-$(CONFIG_WLAGS49_H2)	+= wlags49_h2/
 obj-$(CONFIG_WLAGS49_H25)	+= wlags49_h25/
 obj-$(CONFIG_BATMAN_ADV)	+= batman-adv/
drivers/staging/Kconfig +2 -0
@@ -123,6 +123,8 @@ source "drivers/staging/iio/Kconfig"
 
 source "drivers/staging/zram/Kconfig"
 
+source "drivers/staging/zcache/Kconfig"
+
 source "drivers/staging/wlags49_h2/Kconfig"
 
 source "drivers/staging/wlags49_h25/Kconfig"

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