torvalds/linux

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.

What:        /sys/devices/system/xen_memory/xen_memory0/scrub_pages
Date:        September 2018
KernelVersion:    4.20
Contact:    xen-devel@lists.xenproject.org
Description:
        Control scrubbing pages before returning them to Xen for others domains
        use. Can be set with xen_scrub_pages cmdline
        parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.