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[Xen-devel] Re: Tmem [PATCH 4/5] (Take 3): Add mm buildfiles

To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Subject: [Xen-devel] Re: Tmem [PATCH 4/5] (Take 3): Add mm buildfiles
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Thu, 17 Dec 2009 17:07:51 -0800
Cc: npiggin@xxxxxxx, akpm@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, tmem-devel@xxxxxxxxxxxxxx, kurt.hackel@xxxxxxxxxx, Pavel Machek <pavel@xxxxxx>, Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, dave.mccracken@xxxxxxxxxx, linux-mm@xxxxxxxxx, chris.mason@xxxxxxxxxx, sunil.mushran@xxxxxxxxxx, Avi Kivity <avi@xxxxxxxxxx>, Rusty@xxxxxxxxxxxxxxxxxxxx, Schwidefsky <schwidefsky@xxxxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, alan@xxxxxxxxxxxxxxxxxxx, Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
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On 12/17/2009 04:38 PM, Dan Magenheimer wrote:
Tmem [PATCH 4/5] (Take 3): Add mm buildfiles

Add necessary Kconfig and Makefile changes to mm directory

These should be part of their respective tmem-core/frontswap/cleancache patches.

    J

Signed-off-by: Dan Magenheimer<dan.magenheimer@xxxxxxxxxx>

  Kconfig                                  |   26 +++++++++++++++++++++
  Makefile                                 |    3 ++
  2 files changed, 29 insertions(+)

--- linux-2.6.32/mm/Kconfig     2009-12-02 20:51:21.000000000 -0700
+++ linux-2.6.32-tmem/mm/Kconfig        2009-12-17 13:56:46.000000000 -0700
@@ -287,3 +287,29 @@ config NOMMU_INITIAL_TRIM_EXCESS
          of 1 says that all excess pages should be trimmed.

          See Documentation/nommu-mmap.txt for more information.
+
+#
+# support for transcendent memory
+#
+config TMEM
+       bool "Transcendent memory support"
+       help
+         In a virtualized environment, allows unused and underutilized
+         system physical memory to be made accessible through a narrow
+         well-defined page-copy-based API.
+
+config CLEANCACHE
+       bool "Cache clean pages in transcendent memory"
+       depends on TMEM
+       help
+         Allows the transcendent memory pool to be used to store clean
+         page-cache pages which, under some circumstances, will greatly
+         reduce paging and thus improve performance.
+
+config FRONTSWAP
+       bool "Swap pages to transcendent memory"
+       depends on TMEM
+       help
+         Allows the transcendent memory pool to be used as a pseudo-swap
+         device which, under some circumstances, will greatly reduce
+         swapping and thus improve performance.
--- linux-2.6.32/mm/Makefile    2009-12-02 20:51:21.000000000 -0700
+++ linux-2.6.32-tmem/mm/Makefile       2009-12-17 14:23:40.000000000 -0700
@@ -17,6 +17,9 @@ obj-y += init-mm.o

  obj-$(CONFIG_BOUNCE)  += bounce.o
  obj-$(CONFIG_SWAP)    += page_io.o swap_state.o swapfile.o thrash.o
+obj-$(CONFIG_TMEM)     += tmem.o
+obj-$(CONFIG_FRONTSWAP)        += frontswap.o
+obj-$(CONFIG_CLEANCACHE) += cleancache.o
  obj-$(CONFIG_HAS_DMA) += dmapool.o
  obj-$(CONFIG_HUGETLBFS)       += hugetlb.o
  obj-$(CONFIG_NUMA)    += mempolicy.o



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