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Commit e0438b91 authored by David Vrabel's avatar David Vrabel Committed by Konrad Rzeszutek Wilk
Browse files

xen: document balloon driver sysfs files 



Add ABI documentation for the balloon driver's sysfs files.

Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Reviewed-by: default avatarDaniel Kiper <dkiper@net-space.pl>
[v2: Added comments from Daniel]
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent c3b92c87

Documentation/ABI/stable/sysfs-devices-system-xen_memory

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What:		/sys/devices/system/xen_memory/xen_memory0/max_retry_count

Date:		May 2011

KernelVersion:	2.6.39

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		The maximum number of times the balloon driver will

		attempt to increase the balloon before giving up.  See

		also 'retry_count' below.

		A value of zero means retry forever and is the default one.



What:		/sys/devices/system/xen_memory/xen_memory0/max_schedule_delay

Date:		May 2011

KernelVersion:	2.6.39

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		The limit that 'schedule_delay' (see below) will be

		increased to. The default value is 32 seconds.



What:		/sys/devices/system/xen_memory/xen_memory0/retry_count

Date:		May 2011

KernelVersion:	2.6.39

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		The current number of times that the balloon driver

		has attempted to increase the size of the balloon.

		The default value is one. With max_retry_count being

		zero (unlimited), this means that the driver will attempt

		to retry with a 'schedule_delay' delay.



What:		/sys/devices/system/xen_memory/xen_memory0/schedule_delay

Date:		May 2011

KernelVersion:	2.6.39

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		The time (in seconds) to wait between attempts to

		increase the balloon.  Each time the balloon cannot be

		increased, 'schedule_delay' is increased (until

		'max_schedule_delay' is reached at which point it

		will use the max value).



What:		/sys/devices/system/xen_memory/xen_memory0/target

Date:		April 2008

KernelVersion:	2.6.26

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		The target number of pages to adjust this domain's

		memory reservation to.



What:		/sys/devices/system/xen_memory/xen_memory0/target_kb

Date:		April 2008

KernelVersion:	2.6.26

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		As target above, except the value is in KiB.



What:		/sys/devices/system/xen_memory/xen_memory0/info/current_kb

Date:		April 2008

KernelVersion:	2.6.26

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		Current size (in KiB) of this domain's memory

		reservation.



What:		/sys/devices/system/xen_memory/xen_memory0/info/high_kb

Date:		April 2008

KernelVersion:	2.6.26

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		Amount (in KiB) of high memory in the balloon.



What:		/sys/devices/system/xen_memory/xen_memory0/info/low_kb

Date:		April 2008

KernelVersion:	2.6.26

Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Description:

		Amount (in KiB) of low (or normal) memory in the

		balloon.