On Wed, Oct 26, 2011 at 09:12:12PM +0200, Daniel Kiper wrote:
> On Wed, Oct 26, 2011 at 11:57:43AM +0100, David Vrabel wrote:
> > From: David Vrabel <david.vrabel@xxxxxxxxxx>
> >
> > Add ABI documentation for the balloon driver's sysfs files.
> >
> > Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
> > ---
> > .../ABI/stable/sysfs-devices-system-xen_memory | 72
> > ++++++++++++++++++++
> > 1 files changed, 72 insertions(+), 0 deletions(-)
> > create mode 100644 Documentation/ABI/stable/sysfs-devices-system-xen_memory
> >
> > diff --git a/Documentation/ABI/stable/sysfs-devices-system-xen_memory
> > b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
> > new file mode 100644
> > index 0000000..4fbc446
> > --- /dev/null
> > +++ b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
> > @@ -0,0 +1,72 @@
> > +What:
> > /sys/devices/system/xen_memory/xen_memory0/max_retry_count
> > +Date: April 2008
>
> May 2011
>
> > +KernelVersion: 2.6.26
>
> 2.6.39, git commit 95d2ac4a0c904942a4fecf815781ebd4171e7a30
> and 40095de1f9082f058970b985a96d2fbef43f94f4.
>
> Additionally, I think it is worth to add default value and special
> cases description (e.g. max_retry_count == 0 => RETRY_UNLIMITED).
> Please look into drivers/xen/{balloon.c,xen-balloon.c}
> and include/xen/balloon.h for details.
>
> > +Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > +Description:
> > + The maximum number of times the balloon driver will
> > + attempt to increase the balloon before giving up. See
> > + also 'retry_count' below.
> > +
> > +What:
> > /sys/devices/system/xen_memory/xen_memory0/max_schedule_delay
> > +Date: April 2008
>
> Ditto.
>
> > +KernelVersion: 2.6.26
>
> Ditto.
>
> > +Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > +Description:
> > + The limit that 'schedule_delay' (see below) will be
> > + increased to.
> > +
> > +What: /sys/devices/system/xen_memory/xen_memory0/retry_count
> > +Date: April 2008
>
> Ditto.
>
> > +KernelVersion: 2.6.26
>
> Ditto.
>
> > +Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > +Description:
> > + The current number of times that the balloon driver
> > + has attempted to increase the size of the balloon.
> > +
> > +What:
> > /sys/devices/system/xen_memory/xen_memory0/schedule_delay
> > +Date: April 2008
>
> Ditto.
>
> > +KernelVersion: 2.6.26
>
> Ditto.
>
> Daniel
Daniel, how does this look ? I added your Reviewed-by, but if you want
to make some more modifications I can certainly do so.
>From d759668b660f111b6f35b632031eaf1a136a22f3 Mon Sep 17 00:00:00 2001
From: David Vrabel <david.vrabel@xxxxxxxxxx>
Date: Wed, 26 Oct 2011 11:57:43 +0100
Subject: [PATCH] xen: document balloon driver sysfs files
Add ABI documentation for the balloon driver's sysfs files.
Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
Reviewed-by: Daniel Kiper <dkiper@xxxxxxxxxxxx>
[v2: Added comments from Daniel]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
.../ABI/stable/sysfs-devices-system-xen_memory | 77 ++++++++++++++++++++
1 files changed, 77 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/stable/sysfs-devices-system-xen_memory
diff --git a/Documentation/ABI/stable/sysfs-devices-system-xen_memory
b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
new file mode 100644
index 0000000..39463d0
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
@@ -0,0 +1,77 @@
+What: /sys/devices/system/xen_memory/xen_memory0/max_retry_count
+Date: May 2011
+KernelVersion: 2.6.39
+Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
+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@xxxxxxxxxx>
+Description:
+ The limit that 'schedule_delay' (see below) will be
+ increased to. The default value is 32.
+
+What: /sys/devices/system/xen_memory/xen_memory0/retry_count
+Date: May 2011
+KernelVersion: 2.6.39
+Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
+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@xxxxxxxxxx>
+Description:
+ The time (in jiffies) 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 that value).
+
+What: /sys/devices/system/xen_memory/xen_memory0/target
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
+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@xxxxxxxxxx>
+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@xxxxxxxxxx>
+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@xxxxxxxxxx>
+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@xxxxxxxxxx>
+Description:
+ Amount (in KiB) of low (or normal) memory in the
+ balloon.
--
1.7.7.1
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