On Tue, 23 Jan 2018, Aishwarya Pant wrote:
> 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 <[email protected]> > --- > Documentation/ABI/testing/sysfs-class-pktcdvd | 122 > +++++++++++++++----------- > 1 file changed, 71 insertions(+), 51 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-class-pktcdvd > b/Documentation/ABI/testing/sysfs-class-pktcdvd > index b1c3f0263359..e85ec99c6e31 100644 > --- a/Documentation/ABI/testing/sysfs-class-pktcdvd > +++ b/Documentation/ABI/testing/sysfs-class-pktcdvd > @@ -1,60 +1,80 @@ > -What: /sys/class/pktcdvd/ > +sysfs interface > +--------------- > +The pktcdvd module (packet writing driver) creates the following 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 <[email protected]> > Description: > > -sysfs interface > ---------------- > + add: (WO) Write a block device id (major:minor) to create > + a new pktcdvd device and map it to the block device. > + > + remove: (WO) Write the pktcdvd device id (major:minor) to > it to > + remove the pktcdvd device. > + > + device_map: (RO) Shows the device mapping in format: > + pktcdvd[0-7] <pktdevid> <blkdevid> > + > + > +What: /sys/class/pktcdvd/pktcdvd[0-7]/dev > +What: /sys/class/pktcdvd/pktcdvd[0-7]/uevent It looks like there is a small alignment problem here. Maybe you use spaces in one case and tabs in the other. julia > +Date: Oct. 2006 > +KernelVersion: 2.6.20 > +Contact: Thomas Maier <[email protected]> > +Description: > + dev: (RO) Device id > + > + uevent: (WO) To send an uevent > + > + > +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 <[email protected]> > +Description: > + packets_started: (RO) Number of started packets. > + > + packets_finished: (RO) Number of finished packets. > + > + 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 <[email protected]> > +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. > > -The pktcdvd module (packet writing driver) creates > -these files in the sysfs: > -(<devid> is in format major:minor ) > - > -/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. > - > - remove (0200) Write the pktcdvd device id (major:minor) > - to it to remove the pktcdvd device. > - > - device_map (0444) 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. > - > - kb_written (0444) kBytes written. > - kb_read (0444) kBytes read. > - kb_read_gather (0444) kBytes read to fill write packets. > - > - 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. > - > - congestion_off (0644) If bio write queue size is below > - this mark, accept new bio requests > - from the block layer. > - > - 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. > + 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: > -- > 2.16.1 > >
