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authorLinus Torvalds <torvalds@linux-foundation.org>2020-11-01 20:59:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-11-01 20:59:13 +0300
commit9c75b68b91ff010d8d4c703b93954f605e2ef516 (patch)
tree5bf53b0c610a5abf0cd874d0687f4e731009fda4 /Documentation/ABI/testing/sysfs-class-pktcdvd
parent2376cca02d73a67ab28f03aa787777b74c3b0230 (diff)
parent2fcce37a3d2f2f3d7fa36aad2b71cbaca135ffd4 (diff)
downloadlinux-9c75b68b91ff010d8d4c703b93954f605e2ef516.tar.xz
Merge tag 'driver-core-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and documentation fixes from Greg KH: "Here is one tiny debugfs change to fix up an API where the last user was successfully fixed up in 5.10-rc1 (so it couldn't be merged earlier), and a much larger Documentation/ABI/ update to the files so they can be automatically parsed by our tools. The Documentation/ABI/ updates are just formatting issues, small ones to bring the files into parsable format, and have been acked by numerous subsystem maintainers and the documentation maintainer. I figured it was good to get this into 5.10-rc2 to help wih the merge issues that would arise if these were to stick in linux-next until 5.11-rc1. The debugfs change has been in linux-next for a long time, and the Documentation updates only for the last linux-next release" * tag 'driver-core-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (40 commits) scripts: get_abi.pl: assume ReST format by default docs: ABI: sysfs-class-led-trigger-pattern: remove hw_pattern duplication docs: ABI: sysfs-class-backlight: unify ABI documentation docs: ABI: sysfs-c2port: remove a duplicated entry docs: ABI: sysfs-class-power: unify duplicated properties docs: ABI: unify /sys/class/leds/<led>/brightness documentation docs: ABI: stable: remove a duplicated documentation docs: ABI: change read/write attributes docs: ABI: cleanup several ABI documents docs: ABI: sysfs-bus-nvdimm: use the right format for ABI docs: ABI: vdso: use the right format for ABI docs: ABI: fix syntax to be parsed using ReST notation docs: ABI: convert testing/configfs-acpi to ReST docs: Kconfig/Makefile: add a check for broken ABI files docs: abi-testing.rst: enable --rst-sources when building docs docs: ABI: don't escape ReST-incompatible chars from obsolete and removed docs: ABI: create a 2-depth index for ABI docs: ABI: make it parse ABI/stable as ReST-compatible files docs: ABI: sysfs-uevent: make it compatible with ReST output docs: ABI: testing: make the files compatible with ReST output ...
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-pktcdvd')
-rw-r--r--Documentation/ABI/testing/sysfs-class-pktcdvd38
1 files changed, 21 insertions, 17 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-pktcdvd b/Documentation/ABI/testing/sysfs-class-pktcdvd
index dde4f26d0780..ba1ce626591d 100644
--- a/Documentation/ABI/testing/sysfs-class-pktcdvd
+++ b/Documentation/ABI/testing/sysfs-class-pktcdvd
@@ -11,15 +11,17 @@ KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
- add: (WO) Write a block device id (major:minor) to
+ ========== ==============================================
+ 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)
+ remove (WO) Write the pktcdvd device id (major:minor)
to remove the pktcdvd device.
- device_map: (RO) Shows the device mapping in format:
+ device_map (RO) Shows the device mapping in format:
pktcdvd[0-7] <pktdevid> <blkdevid>
+ ========== ==============================================
What: /sys/class/pktcdvd/pktcdvd[0-7]/dev
@@ -65,29 +67,31 @@ Date: Oct. 2006
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:
- size: (RO) Contains the size of the bio write queue.
+ ============== ================================================
+ size (RO) Contains the size of the bio write queue.
- congestion_off: (RW) If bio write queue size is below this mark,
+ 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
+ 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:
--------
-To use the pktcdvd sysfs interface directly, you can do:
-
-# create a new pktcdvd device mapped to /dev/hdc
-echo "22:0" >/sys/class/pktcdvd/add
-cat /sys/class/pktcdvd/device_map
-# assuming device pktcdvd0 was created, look at stat's
-cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
-# print the device id of the mapped block device
-fgrep pktcdvd0 /sys/class/pktcdvd/device_map
-# remove device, using pktcdvd0 device id 253:0
-echo "253:0" >/sys/class/pktcdvd/remove
+To use the pktcdvd sysfs interface directly, you can do::
+
+ # create a new pktcdvd device mapped to /dev/hdc
+ echo "22:0" >/sys/class/pktcdvd/add
+ cat /sys/class/pktcdvd/device_map
+ # assuming device pktcdvd0 was created, look at stat's
+ cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
+ # print the device id of the mapped block device
+ fgrep pktcdvd0 /sys/class/pktcdvd/device_map
+ # remove device, using pktcdvd0 device id 253:0
+ echo "253:0" >/sys/class/pktcdvd/remove