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authorDavid Vrabel <david.vrabel@citrix.com>2011-10-26 11:57:43 +0100
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-11-09 16:00:46 -0500
commite0438b91ba4bfd23a5bb694d72af38ded433eb70 (patch)
tree0fd3e0730d2ad748f9f967a026ffadcf4ddf8628 /Documentation/ABI/stable
parentc3b92c8787367a8bb53d57d9789b558f1295cc96 (diff)
xen: document balloon driver sysfs files
Add ABI documentation for the balloon driver's sysfs files. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Daniel Kiper <dkiper@net-space.pl> [v2: Added comments from Daniel] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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diff --git a/Documentation/ABI/stable/sysfs-devices-system-xen_memory b/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.