forked from Minki/linux
42 lines
1.6 KiB
Plaintext
42 lines
1.6 KiB
Plaintext
|
What: /sys/devices/*/xenbus/event_channels
|
||
|
|
Date: February 2021
|
||
|
|
Contact: Xen Developers mailing list <xen-devel@lists.xenproject.org>
|
||
|
|
Description:
|
||
|
|
Number of Xen event channels associated with a kernel based
|
||
|
|
paravirtualized device frontend or backend.
|
||
|
|
|
||
|
|
What: /sys/devices/*/xenbus/events
|
||
|
|
Date: February 2021
|
||
|
|
Contact: Xen Developers mailing list <xen-devel@lists.xenproject.org>
|
||
|
|
Description:
|
||
|
|
Total number of Xen events received for a Xen pv device
|
||
|
|
frontend or backend.
|
||
|
|
|
||
|
|
What: /sys/devices/*/xenbus/jiffies_eoi_delayed
|
||
|
|
Date: February 2021
|
||
|
|
Contact: Xen Developers mailing list <xen-devel@lists.xenproject.org>
|
||
|
|
Description:
|
||
|
|
Summed up time in jiffies the EOI of an interrupt for a Xen
|
||
|
|
pv device has been delayed in order to avoid stalls due to
|
||
|
|
event storms. This value rising is a first sign for a rogue
|
||
|
|
other end of the pv device.
|
||
|
|
|
||
|
|
What: /sys/devices/*/xenbus/spurious_events
|
||
|
|
Date: February 2021
|
||
|
|
Contact: Xen Developers mailing list <xen-devel@lists.xenproject.org>
|
||
|
|
Description:
|
||
|
|
Number of events received for a Xen pv device which did not
|
||
|
|
require any action. Too many spurious events in a row will
|
||
|
|
trigger delayed EOI processing.
|
||
|
|
|
||
|
|
What: /sys/devices/*/xenbus/spurious_threshold
|
||
|
|
Date: February 2021
|
||
|
|
Contact: Xen Developers mailing list <xen-devel@lists.xenproject.org>
|
||
|
|
Description:
|
||
|
|
Controls the tolerated number of subsequent spurious events
|
||
|
|
before delayed EOI processing is triggered for a Xen pv
|
||
|
|
device. Default is 1. This can be modified in case the other
|
||
|
|
end of the pv device is issuing spurious events on a regular
|
||
|
|
basis and is known not to be malicious on purpose. Raising
|
||
|
|
the value for such cases can improve pv device performance.
|