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Documentation/ABI: clean up sysfs-class-pktcdvd

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Clean up the sysfs documentation such that it is in the same format as
described in Documentation/ABI/README. Mainly, the patch moves the
attribute names to the 'What:' field. This might be useful for scripting
and tracking changes in the ABI.

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Aishwarya Pant 2018-02-23 18:46:32 +05:30 committed by Jonathan Corbet
parent 8fcce5803a
commit 9b58eae401
1 changed files with 65 additions and 44 deletions
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109
Documentation/ABI/testing/sysfs-class-pktcdvd
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@ -1,60 +1,81 @@
What: /sys/class/pktcdvd/
Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
sysfs interface
---------------
The pktcdvd module (packet writing driver) creates the following files in the
sysfs: (<devid> is in the format major:minor)
The pktcdvd module (packet writing driver) creates
these files in the sysfs:
(<devid> is in format major:minor )
What: /sys/class/pktcdvd/add
What: /sys/class/pktcdvd/remove
What: /sys/class/pktcdvd/device_map
Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
/sys/class/pktcdvd/
add (0200) Write a block device id (major:minor)
to create a new pktcdvd device and map
it to the block device.
add: (WO) Write a block device id (major:minor) to
create a new pktcdvd device and map it to the
block device.
remove (0200) Write the pktcdvd device id (major:minor)
to it to remove the pktcdvd device.
remove: (WO) Write the pktcdvd device id (major:minor)
to remove the pktcdvd device.
device_map (0444) Shows the device mapping in format:
pktcdvd[0-7] <pktdevid> <blkdevid>
device_map: (RO) Shows the device mapping in format:
pktcdvd[0-7] <pktdevid> <blkdevid>
/sys/class/pktcdvd/pktcdvd[0-7]/
dev (0444) Device id
uevent (0200) To send an uevent.
/sys/class/pktcdvd/pktcdvd[0-7]/stat/
packets_started (0444) Number of started packets.
packets_finished (0444) Number of finished packets.
What: /sys/class/pktcdvd/pktcdvd[0-7]/dev
What: /sys/class/pktcdvd/pktcdvd[0-7]/uevent
Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
dev: (RO) Device id
kb_written (0444) kBytes written.
kb_read (0444) kBytes read.
kb_read_gather (0444) kBytes read to fill write packets.
uevent: (WO) To send a uevent
reset (0200) Write any value to it to reset
pktcdvd device statistic values, like
bytes read/written.
/sys/class/pktcdvd/pktcdvd[0-7]/write_queue/
size (0444) Contains the size of the bio write
queue.
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/packets_started
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/packets_finished
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_written
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_read
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_read_gather
What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/reset
Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
packets_started: (RO) Number of started packets.
congestion_off (0644) If bio write queue size is below
this mark, accept new bio requests
from the block layer.
packets_finished: (RO) Number of finished packets.
congestion_on (0644) If bio write queue size is higher
as this mark, do no longer accept
bio write requests from the block
layer and wait till the pktcdvd
device has processed enough bio's
so that bio write queue size is
below congestion off mark.
A value of <= 0 disables congestion
control.
kb_written: (RO) kBytes written.
kb_read: (RO) kBytes read.
kb_read_gather: (RO) kBytes read to fill write packets.
reset: (WO) Write any value to it to reset
pktcdvd device statistic values, like
bytes read/written.
What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/size
What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/congestion_off
What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/congestion_on
Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
size: (RO) Contains the size of the bio write queue.
congestion_off: (RW) If bio write queue size is below this mark,
accept new bio requests from the block layer.
congestion_on: (RW) If bio write queue size is higher as this
mark, do no longer accept bio write requests
from the block layer and wait till the pktcdvd
device has processed enough bio's so that bio
write queue size is below congestion off mark.
A value of <= 0 disables congestion control.
Example: