summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/testing/sysfs-devices-xenbus
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/ABI/testing/sysfs-devices-xenbus
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-xenbus')
-rw-r--r--Documentation/ABI/testing/sysfs-devices-xenbus41
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-xenbus b/Documentation/ABI/testing/sysfs-devices-xenbus
new file mode 100644
index 000000000..fd796cb4f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-xenbus
@@ -0,0 +1,41 @@
+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.