linux-kernel - Re: [PATCH 3/4] drivers: add memory management driver class

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Date:	Tue, 31 Jul 2012 11:31:33 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nitin Gupta <ngupta@...are.org>,
	Minchan Kim <minchan@...nel.org>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH 3/4] drivers: add memory management driver class

On Fri, Jul 27, 2012 at 01:18:36PM -0500, Seth Jennings wrote:
> This patchset creates a new driver class under drivers/ for
> memory management related drivers, like zcache.

I was going back and forth with Dan whether it should be in mm/
or in drivers/mm.
> 
> This driver class would be for drivers that don't actually enabled
> a hardware device, but rather augment the memory manager in some
> way.
> 
> In-tree candidates for this driver class are zcache, zram, and
> lowmemorykiller, both in staging.

But with some many (well, three of them) I think sticking them in
drviers/mm makes more sense.
> 
> Signed-off-by: Seth Jennings <sjenning@...ux.vnet.ibm.com>
> ---
>  drivers/Kconfig    |    2 ++
>  drivers/Makefile   |    1 +
>  drivers/mm/Kconfig |    3 +++
>  3 files changed, 6 insertions(+)
>  create mode 100644 drivers/mm/Kconfig
> 
> diff --git a/drivers/Kconfig b/drivers/Kconfig
> index ece958d..67fe7bd 100644
> --- a/drivers/Kconfig
> +++ b/drivers/Kconfig
> @@ -152,4 +152,6 @@ source "drivers/vme/Kconfig"
>  
>  source "drivers/pwm/Kconfig"
>  
> +source "drivers/mm/Kconfig"
> +
>  endmenu
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 5b42184..121742e 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -139,3 +139,4 @@ obj-$(CONFIG_EXTCON)		+= extcon/
>  obj-$(CONFIG_MEMORY)		+= memory/
>  obj-$(CONFIG_IIO)		+= iio/
>  obj-$(CONFIG_VME_BUS)		+= vme/
> +obj-$(CONFIG_MM_DRIVERS)	+= mm/
> diff --git a/drivers/mm/Kconfig b/drivers/mm/Kconfig
> new file mode 100644
> index 0000000..e5b3743
> --- /dev/null
> +++ b/drivers/mm/Kconfig
> @@ -0,0 +1,3 @@
> +menu "Memory management drivers"
> +
> +endmenu
> -- 
> 1.7.9.5
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