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

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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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