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

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Date:	Sun, 6 Feb 2011 19:27:09 -0800
From:	Dan Magenheimer <dan.magenheimer@...cle.com>
To:	gregkh@...e.de, chris.mason@...cle.com, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, matthew@....cx,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	ngupta@...are.org, jeremy@...p.org, kurt.hackel@...cle.com,
	npiggin@...nel.dk, riel@...hat.com, konrad.wilk@...cle.com,
	dan.magenheimer@...cle.com, mel@....ul.ie, minchan.kim@...il.com,
	kosaki.motohiro@...fujitsu.com, sfr@...b.auug.org.au,
	wfg@...l.ustc.edu.cn, tytso@....edu, viro@...IV.linux.org.uk,
	hughd@...gle.com, hannes@...xchg.org
Subject: [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 <dan.magenheimer@...cle.com>
Signed-off-by: Nitin Gupta <ngupta@...are.org>

---

Diffstat:
 drivers/staging/Kconfig                  |    2 ++
 drivers/staging/Makefile                 |    1 +
 drivers/staging/zcache/Kconfig           |   13 +++++++++++++
 drivers/staging/zcache/Makefile          |    1 +
 4 files changed, 17 insertions(+)

--- linux-2.6.37/drivers/staging/zcache/Makefile	1969-12-31 17:00:00.000000000 -0700
+++ linux-2.6.37-zcache/drivers/staging/zcache/Makefile	2011-02-05 15:47:15.000000000 -0700
@@ -0,0 +1 @@
+obj-$(CONFIG_ZCACHE)	+=	zcache.o tmem.o
--- linux-2.6.37/drivers/staging/zcache/Kconfig	1969-12-31 17:00:00.000000000 -0700
+++ linux-2.6.37-zcache/drivers/staging/zcache/Kconfig	2011-02-05 15:54:10.000000000 -0700
@@ -0,0 +1,13 @@
+config ZCACHE
+	tristate "Dynamic compression of swap pages and clean pagecache pages"
+	depends on CLEANCACHE || FRONTSWAP
+	select XVMALLOC
+	select LZO_COMPRESS
+	select LZO_DECOMPRESS
+	default n
+	help
+	  Zcache doubles RAM efficiency while providing a significant
+	  performance boosts on many workloads.  Zcache uses lzo1x
+	  compression and an in-kernel implementation of transcendent
+	  memory to store clean page cache pages and swap in RAM,
+	  providing a noticeable reduction in disk I/O.
--- linux-2.6.37/drivers/staging/Makefile	2011-01-04 17:50:19.000000000 -0700
+++ linux-2.6.37-zcache/drivers/staging/Makefile	2011-02-05 15:46:16.000000000 -0700
@@ -44,6 +44,7 @@ obj-$(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/
--- linux-2.6.37/drivers/staging/Kconfig	2011-01-04 17:50:19.000000000 -0700
+++ linux-2.6.37-zcache/drivers/staging/Kconfig	2011-02-05 15:46:48.000000000 -0700
@@ -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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